{"id":7789,"date":"2026-06-03T12:21:01","date_gmt":"2026-06-03T10:21:01","guid":{"rendered":"https:\/\/demke-electronic.com\/faq\/"},"modified":"2026-09-08T11:21:54","modified_gmt":"2026-09-08T09:21:54","slug":"faq","status":"publish","type":"page","link":"https:\/\/demke-electronic.com\/en\/faq\/","title":{"rendered":"FAQ"},"content":{"rendered":"\t\t
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Answers about DC\/DC converters<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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FAQ: Frequently Asked Questions About DC\/DC Converters<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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Whether it is input voltage, galvanic isolation, efficiency, CC\/CV or the right design for your application: here we answer common technical questions about DC\/DC converters, how to choose them and how they are used. The information is intended for engineers, designers, technical buyers and anyone who needs a reliable power supply for vehicles, machines and demanding electrical systems. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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WATT do you want to know?<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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We Have Answers!<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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From the basics to specific applications: here you will find answers to frequently asked questions about the selection, function and use of our DC\/DC converters.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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What Is a DC\/DC Converter? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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A DC\/DC converter is an electronic device that converts a DC voltage into another, higher or lower DC voltage \u2013 for example, 80 V from a forklift battery into a stable 24 V for the onboard power supply. A complete DC\/DC converter from Demke Electronic includes not only the power stage, but also control circuitry, power switches and EMI filters. This ensures a stable, low-noise and standards-compliant output voltage. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What is the difference between a step-down converter, step-up converter and buck-boost converter? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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A step-down converter (buck) generates a lower output voltage, while a step-up converter (boost) generates a higher output voltage than the input voltage. A buck-boost converter can do both: it provides a stable output voltage regardless of whether the input voltage is above or below it. This is particularly important in battery applications, as the battery voltage can vary significantly depending on the state of charge \u2013 for example, a 24 V output from a 24 V battery whose voltage varies between 18 V and 30 V. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What does galvanic isolation mean in DC\/DC converters? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Galvanic isolation means that the input and output circuits are electrically isolated from each other \u2013 power is transferred via a transformer. This protects sensitive electronics from interference, prevents ground loops and enhances safety. Our isolated converters offer isolation ratings of, for example, 2100 VDC between the primary and secondary sides. Non-isolated converters (\u201cwithout isolation\u201d) are more compact and cost-effective, but share a common reference potential. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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When do I need an isolated and when a non-isolated DC\/DC converter? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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You need an isolated converter when the input and output circuits must have separate potentials \u2013 for example, to protect sensitive sensors, prevent ground loops, in safety-critical applications or when required by standards, such as in railway applications. A non-isolated converter is sufficient when both circuits can share the same ground potential, for example when supplying control systems and terminals from the same vehicle onboard power system. If in doubt, we will be happy to advise you. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What does CC\/CV charging characteristic mean? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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CC\/CV stands for Constant Current \/ Constant Voltage. During normal operation, the converter regulates the output voltage (CV). In the event of an overload, it limits the current to a defined value (CC). This characteristic makes our DC\/DC converters fully capable battery charging converters: a discharged battery is initially charged with constant current until the defined end-of-charge voltage is reached \u2013 without the converter shutting down or triggering a fuse. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What is a wide input voltage range or an ultra-wide input voltage range? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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A wide input range allows a DC\/DC converter to operate reliably over a very large input voltage range. Demke converters offer ranges of up to 1:10, for example from 12 V lead-acid to 120 V lithium systems. One converter can therefore cover 24 V, 48 V and 80 V vehicle platforms. This significantly reduces the number of variants, storage costs and effort in development and purchasing. Example: the 755-24-SD DC Converter operates from 18 to 110 VDC. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What does \u201cno power derating\u201d mean? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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No derating means that the converter delivers its full rated power across the entire specified temperature range from \u221240 \u00b0C to +85 \u00b0C \u2013 without reducing its output under high or low temperatures. Many standard converters have to be derated from around 50\u201360 \u00b0C ambient temperature, meaning they need to be oversized. Demke converters deliver up to 1200 W even under extreme conditions, eliminating the need for oversizing. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How efficient are Demke DC\/DC converters? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Depending on the model and operating point, our DC\/DC converters achieve efficiencies of up to 99%. Efficiency describes the ratio of output power to input power, measured directly at the connection terminals. High efficiency means, in practice: less waste heat, smaller housings, longer battery runtime in mobile systems and longer service life of the electronics. The values at full load, partial load (50%) and light load (10%) can be found in each datasheet. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What does IP69K mean? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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IP69K is the highest protection class according to ISO 20653. It provides protection against dust as well as high-pressure and high-temperature water jets. Demke converters achieve this through an aluminium housing with full PU potting and sealed cable connections. This makes them resistant to water, dirt, vibration and pressure \u2013 ideal for mobile machines, construction equipment, agricultural machinery, railway applications and food industry environments with high-pressure cleaning. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What do MTBF and MTTF mean? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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MTBF (Mean Time Between Failures) is the statistical average operating time between two failures. MTTF (Mean Time To Failure) is the average time until a device fails. Demke converters achieve MTBF values of up to 1.5 million hours, made possible by a consistently high-quality component selection. In addition, every device is 100% tested before delivery. In the field, our converters have demonstrated an operating reliability of over 99.5%. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Are Demke DC\/DC converters protected against short circuits and no-load operation? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Yes, our converters are permanently protected against no-load operation and short circuits. In the event of an overload or short circuit, they limit the output current to a safe level (CC behaviour) instead of shutting down or sustaining damage. In addition, thermal shutdown protects the device: if the housing temperature exceeds the shutdown threshold (e.g. +90 \u00b0C), the converter switches off and automatically restarts once the temperature has dropped. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What is the purpose of the shutdown pin (SD)? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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The shutdown pin allows the DC\/DC converter to be switched on and off externally without disconnecting the input voltage. For normal operation, the pin remains open; when activated, the converter enters standby mode and draws only a minimal quiescent current (e.g. 2.5 mA for the 755-24-SD). This is useful for energy management, ignition-switched logic or remotely switching off individual loads. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Can Demke DC\/DC converters handle capacitive loads and parallel operation? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Yes. Many of our converters can drive practically unlimited capacitive loads (datasheet specification: \u201cinfinite\u201d) and are suitable for active loads and parallel operation of multiple devices. An integrated soft start ramps up the output voltage in a controlled manner and reduces inrush currents \u2013 preventing upstream fuses from tripping. Models with an internal decoupling diode (suffix \u201cD\u201d) can be connected directly in parallel or used in redundant configurations. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How do I choose the right DC\/DC converter for my application? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Four key questions lead to the right converter: (1) Input voltage range \u2013 what is the source and how much does it fluctuate? (2) Output voltage and maximum output current or power? (3) Is galvanic isolation required or not? (4) Environment \u2013 temperature, humidity, vibration, protection rating? With this information, you can use our product filters to find the right device, or use the configuration form and we will suggest the optimal solution. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Which DC\/DC converter is suitable for electric forklifts and material handling vehicles? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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For forklifts and material handling vehicles, our robust converters with ultra-wide input voltage ranges are ideal, covering all common battery nominal voltages \u2013 24 V, 36 V, 48 V and 80 V \u2013 with a single device. They provide stable 12 V and 24 V onboard power for terminals, sensors and communication systems, are fully potted, vibration-resistant and deliver full power from \u221240 \u00b0C to +85 \u00b0C. This means a single converter variant is sufficient for the entire vehicle fleet. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How do I retrofit laptops or vehicle terminals on an electric forklift? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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With a robust 19 V DC\/DC converter connected directly to the forklift battery. Standard laptop power supplies are not designed to handle fluctuating battery voltages and vibration. Our 19 V converter (e.g. the 145-19-SD DC converter) covers 24 V, 36 V, 48 V and 80 V forklift batteries and reliably powers mobile IT equipment, even during voltage drops when lifting or accelerating. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Are Demke converters suitable for charging batteries and supercapacitors? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Yes, thanks to their CC\/CV charging characteristic, our converters can be used as fully capable charging converters for batteries and supercapacitors. They charge with constant current up to the end-of-charge voltage and then maintain it at a constant level. Conversely, our buck-boost converters make optimal use of the energy stored in batteries and supercapacitors: even when the storage voltage drops significantly, they provide a stable output voltage. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Does Demke Electronic also develop custom DC\/DC converters? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Yes, custom DC\/DC converters are one of our core competencies \u2013 starting from a single unit. We provide unipolar output voltages from 12 V to 200 V (e.g. 13.8 V, 24 V, 27.5 V, 28 V, 29 V, 48 V, 57 V) as well as isolated converters with bipolar outputs such as \u00b115 V, \u00b124 V or \u00b128 V. We also implement custom requirements for connectors, cables, housings and mounting. Send us your specifications via the enquiry form. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Do you also provide complete engineering services? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Yes, we develop power electronics beyond DC\/DC converters \u2013 from circuit design and prototyping to series production. On request, we also provide white-label solutions without Demke branding, allowing you to use the solution under your own brand. Our services also include power electronics forensics, i.e. the analysis of failures and weaknesses in existing electronics. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What happens if my input voltage fluctuates significantly or drops? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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That is exactly what our converters are designed for: the ultra-wide input voltage range handles static deviations of \u00b130% or more from the nominal voltage. Buck-boost models maintain a stable output voltage even when the input voltage drops below the output voltage \u2013 for example during starting, lifting or with an aging battery. An undervoltage lockout protects the battery from deep discharge by switching off the converter below a defined threshold. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How can I place an order with Demke Electronic? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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The fastest way is to contact us directly: via the enquiry form on the product page, by email at info@demke-electronic.com or by phone at +41 71 511 34 00 (Mon\u2013Thu 8:30\u201316:00, Fri 8:30\u201312:00). Tell us the part number or requirements, quantity and desired delivery date \u2013 you will receive a quotation promptly. We supply professional equipment manufacturers and industrial customers worldwide. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What does MTS \u2013 Make to Stock mean? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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MTS (Make to Stock) identifies our stock-managed standard products. These devices are manufactured regularly in series and are available at short notice, depending on current stock levels, or generally within 6 weeks. MTS products can be identified by the corresponding label in the product filter. For ongoing series requirements, we are happy to arrange framework agreements with call-off quantities. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What does BTO \u2013 Build to Order mean? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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BTO (Build to Order) means that the device is fully developed and manufactured after the order is placed. Initial production costs may apply, which are reduced to a minimum from a minimum order quantity of 25 units. Prototypes and project-specific orders are also available on request. BTO devices may still undergo changes resulting from internal validation until final approval. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What does MOQ \u2013 Minimum Order Quantity mean? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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MOQ is the minimum order quantity for project-specific, custom DC\/DC converters. Since custom devices are manufactured exclusively for specific projects and are not kept in general stock, they have a minimum order quantity due to the higher production costs for small quantities; one-time costs may also apply. Talk to us \u2013 we can always find a solution for prototypes and pre-series production. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What does EOL \u2013 End of Life mean? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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EOL (End of Life) identifies products that are no longer in series production or are no longer recommended for new projects. Many EOL devices already have improved successors with the same or better specifications. If you are using an EOL product, we will be happy to advise you on suitable replacements and support you with requalification. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Do you also supply prototypes and small production runs? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Yes. We supply custom converters starting from a single unit and are happy to accept prototypes and project-specific orders on request. For build-to-order products, initial costs are reduced to a minimum from 25 units. For series production, we scale manufacturing through our ISO 9001-certified production partner in Germany. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Which standards and certifications do Demke DC\/DC converters comply with? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Unsere neuesten Entwicklungen erf\u00fcllen die EMV-Normen EN 61000-6-2 (St\u00f6rfestigkeit Industrie), EN 61000-4-2 bis 4-6 (ESD, HF-Felder, Burst, Surge, leitungsgef\u00fchrte St\u00f6rungen) sowie EN 61000-6-3\/6-4 (St\u00f6raussendung Wohn- und Industriebereich). Der DC-Converter 729-57-ON besitzt die Automotive-Strassenzulassung E13-10R-05. Auf Kundenwunsch zertifizieren wir flexibel weitere Standards, z. B. UL oder ECE. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Can your converters be certified for railway applications? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Yes, we can implement certifications for railway applications flexibly according to customer requirements \u2013 including EN 50155 (railway applications), EN 45545 (fire protection for railway applications), EN 61373 (shock and vibration) and EN 50121-3-2 (railway EMC). Our fully potted, vibration-resistant converters with wide input voltage ranges are already designed for rail transport systems, cable cars and mountain railways. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Are Demke products REACH and RoHS compliant? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Yes, our DC\/DC converters are REACH and RoHS compliant. The relevant declarations are available for download on the \u201cStandards and Certifications\u201d page. If you have questions about individual substances or customer-specific declarations of conformity, our team will be happy to assist you. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Where are Demke DC\/DC converters developed and manufactured? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Development takes place in Switzerland. Demke Electronic GmbH is based in Wil, Switzerland, and has specialized in DC\/DC converters since 2008. Production is carried out according to ISO 9001:2015 by our long-term manufacturing partner ELOTEC Fischer Elektronik GmbH in Germany \u2013 Designed in Switzerland, Made in Germany. Every device is 100% tested before delivery. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How does a return (RMA) process work? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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In three steps: (1) Contact us in writing before returning the device and request an RMA number \u2013 returns without prior coordination may be sent back without inspection. (2) Include a detailed description of the fault. (3) Pack the device securely for transport and ship it with sufficient postage. After inspection, we will inform you whether the device will be repaired, replaced or credited. Please report any apparent defects within 7 days of receiving the goods. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Where can I find product datasheets? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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The complete technical datasheet is available as a PDF download on every product page. It contains all electrical specifications (input, output, control), thermal characteristics, EMC compliance, mechanical dimensions and pin assignment. If any information is missing or you need 3D data, derating curves or application notes, contact us directly. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How can I contact technical support? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Directly and without a ticketing system: by phone at +41 71 511 34 00 (Mon\u2013Thu 8:30\u201316:00, Fri 8:30\u201312:00) or by email at info@demke-electronic.com. At Demke, you speak directly with the engineers behind your power supply \u2013 from product selection and EMC questions to field failure analysis. For project discussions, you can also book an appointment directly. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Why do you convert power like an octopus changes its shape? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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The octopus is our guiding principle: it adapts rapidly to any environment \u2013 just like our DC\/DC converters, which adapt to a wide range of voltage platforms thanks to their wide input voltage ranges. Its three hearts represent our three principles: responsibility and discretion, research and development, and lean structures. Strong and flexible like an octopus \u2013 power converters with heart. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Are we on a first-name basis? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Of course \ud83d\ude42 You too?<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How can I find a Demke sales partner in my region? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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We supply our customers worldwide directly. International deliveries are generally shipped from our production site in Germany. Customers in Switzerland are supplied directly from our Swiss warehouse. <\/p>

In selected regions, we also work with carefully chosen sales partners. However, contacting Demke directly remains the easiest way to make enquiries, select products and place orders. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Does Demke offer framework agreements and call-off orders? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Yes. For regularly required DC\/DC converters, we offer individual framework agreements with agreed quantities, prices, contract terms and call-off orders. <\/p>

For recurring orders, we strongly recommend entering into a framework agreement. Especially for electronic components, supply shortages can lead to longer procurement and production times. By planning requirements in advance, we can schedule materials and production capacities proactively and significantly increase supply security. <\/p>

The terms depend on the product, annual demand, call-off quantity and desired delivery time.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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To which quality standards are the DC\/DC converters manufactured? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Our DC\/DC converters are manufactured by our ISO 9001:2015-certified production partner. This ensures defined and documented quality processes throughout manufacturing. <\/p>

Technical design, custom adaptation and project coordination are carried out in close collaboration with us. Depending on the product, the devices are tested, potted and documented in accordance with the agreed technical requirements. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Which countries does Demke Electronic GmbH deliver to? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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We deliver within Switzerland, Germany, the European Union and, in principle, worldwide. Swiss customers are supplied directly from our warehouse in Switzerland; international deliveries are generally shipped from our production site in Germany. <\/p>

Dabei beachten wir alle geltenden Exportkontroll-, Embargo- und Sanktionsvorschriften. Je nach Bestimmungsland, Produkt, Empf\u00e4nger und Verwendungszweck k\u00f6nnen zus\u00e4tzliche Pr\u00fcfungen oder Genehmigungen erforderlich sein. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How are the DC\/DC converters tested? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Each DC\/DC converter is fully automatically tested multiple times during manufacturing. This allows electrical deviations to be detected at an early stage, before the device is fully potted and shipped to the customer. <\/p>

specially with fully PU-potted assemblies, complete testing is essential because later repairs are only possible to a limited extent. Devices outside the defined tolerances are therefore removed during the production process. This helps us maintain consistent quality while reducing scrap, material use and unnecessary transport. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Which Incoterms? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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In principle, we supply according to the following Incoterms:<\/p>