NG Electronics · ISO 9001:2015 Certified Company
NG Electronics, an ISO 9001:2015 certified company in Pune, makes the industrial power supply transformer your converter needs: flyback, forward and push-pull ferrite designs, wound, varnished and hipot tested in-house.
An industrial power supply transformer lives a harder life than the one in a consumer adaptor. It sits inside a closed cabinet next to drives and contactors, runs for years without being switched off, and is fed from mains that sag, surge and carry noise from neighbouring machinery. The transformer provides the isolation between that mains and a low-voltage control rail such as 24 V, so its insulation and thermal behaviour largely set the reliability of the whole supply.
Almost all modern industrial supplies are switch-mode designs, so the transformer is a high-frequency ferrite part and not a laminated mains unit. Operating at tens to hundreds of kHz lets a small core transfer useful power, but it brings its own losses: core loss rises with frequency and flux swing, and skin and proximity effects raise the effective resistance of the windings. A sound design balances core loss against copper loss instead of minimising either one alone.
Topology follows power level. Flyback transformers are common in small supplies, typically below about 150 W, because one magnetic part does everything. Forward converters take over at higher power and need a separate output inductor, while push-pull and bridge stages drive the core in both directions for better utilisation. NG Electronics builds transformers for each of these from under 1 VA up to several hundred watts, along with the chokes that surround them.
ISO 9001:2015 certifiedA ferrite transformer for industrial power supply use is defined by the converter around it, so most electrical values are set jointly. The table lists what we make.
| Transformer types | SMPS, flyback, forward, push-pull, gate-drive and isolation |
|---|---|
| Power range | Under 1 VA up to several hundred watts |
| Core shapes | EE, EF, ETD, EER, UU, RM, PQ and toroidal ferrite |
| Turns ratio and inductance | Specified per design |
| Isolation voltage | Specified per design; hipot tested on every unit |
| Operating temperature | Specified per design |
| Construction | Wound, taped, varnished and tested in-house |
| Compliance | RoHS and REACH compliant materials; certificate copies available on request |
| Sample lead time | Typically 7 to 10 working days for custom designs |
Prototype quantities of about 10 pieces are accepted, and production MOQ for custom transformers is typically 100 to 1,000 pieces.
The same core families serve very different equipment. What changes is the output set, the isolation requirement and the space the enclosure allows.
A DIN rail power supply transformer must fit a narrow housing and run cool with only natural convection. Careful balance of core and copper loss is typical of these builds.
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Controllers, I/O modules and operator panels draw from isolated low-voltage rails. Multi-output transformers supply logic, field and communication circuits from a single core.
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Motor drives and solar inverters carry small auxiliary supplies and gate-drive transformers that feed the isolated driver stages for the power switches.
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Measuring and medical devices need quiet rails. Winding arrangement and screening between primary and secondary help to limit the noise coupled across the isolation barrier.
Enquire nowStock parts you can order today. View details, add to cart or enquire for a custom variant.
Email your input range, outputs, topology, frequency and isolation requirement to sales@ngelectronics.in, or call +91 83290 52861 between 9am and 7pm, Monday to Saturday. WhatsApp works on the same number.
Magnetic components for industrial power supplies are best chosen as a set, because each one affects the others. The transformer sets the stress on the switch and rectifiers. The output inductor, in forward and bridge designs, sets ripple current in the capacitors. The common mode choke and line filter inductor at the input decide whether the supply meets conducted emission limits in standards such as CISPR 32. Changing transformer capacitance or leakage often changes what the filter has to do.
Thermal design deserves early attention. A cabinet supply may see high ambient temperature with no forced air, and ferrite saturates at a lower flux density as it warms. The core should therefore be sized for peak flux at the hottest condition, and the winding for the RMS current at lowest input voltage, where primary current is greatest. Leaving margin here costs a little core size but avoids failures that only appear in summer on a fully loaded panel.
Industrial customers expect documentation as well as parts. NG Electronics is an ISO 9001:2015 certified manufacturer whose transformers are produced entirely in Pune, with automatic transformer testers, impulse testers and insulation breakdown testers among the equipment in use. All units pass electrical test before packing, and a test certificate is available with the order on request. Batch records provide traceability to raw material and date of production, which simplifies your own quality audits.
Because we also wind toroidal inductors, common mode chokes and line filter inductors, one supplier can cover the full magnetics list for a power supply. That shortens approval, since the parts are designed with knowledge of each other. The route is simple: specification in, technical quotation within 24 working hours, a free sample for your lab, then production. Design assistance is not charged where production intent is firm, and overseas enquiries are welcome alongside orders from across India.
Call, WhatsApp or use the form with inductance, current and quantity.
Price, lead time and datasheet within 24 working hours.
Sample built in-house for your lab testing and approval.
Production with 100% electrical testing under ISO 9001:2015.
Packed with a test certificate, shipped across India or exported worldwide.
Answers about industrial power supply transformer from NG Electronics, an ISO 9001:2015 certified company
It is the isolating magnetic part inside a power supply built for factory and control equipment. In switch-mode supplies it is a ferrite-core transformer running at high frequency, which transfers power from the mains side to low-voltage outputs while providing electrical separation. Its design accounts for continuous operation, wide input variation and elevated cabinet temperatures.
As a broad guide, flyback is typically used at lower power, up to roughly 150 W, forward converters in the middle range, and push-pull or bridge converters above that. The boundaries overlap and depend on input voltage, output current and cost. We manufacture transformers for all of these topologies, from under 1 VA to several hundred watts.
The choice depends on the housing. ETD and EER cores offer a generous winding window for mains-isolated designs, PQ and RM cores give compact footprints with more of the winding enclosed by ferrite, and EE and EF cores are economical for lower power. We wind on all of these families and will suggest a shape once the available height, footprint and power are known.
Every transformer is hipot tested between the windings that must be isolated, at the test voltage agreed in the specification. Insulation breakdown testers and impulse testers are part of our in-house equipment, and impulse testing helps reveal turn-to-turn insulation faults that a simple inductance measurement may miss. Results can be recorded on a test certificate supplied on request.
Yes. Besides the transformer we make output inductors on toroidal cores, common mode chokes from 1 mH to 100 mH, and line filter inductors from 100 µH to 10 mH for the input stage. Ordering these together means the EMI filter and the transformer can be considered as one system during sampling.
MOQ is flexible. Around 10 pieces is normal for R&D, and a single prototype sample is possible for a custom design. For production, custom parts typically start at 100 to 1,000 pieces. Custom samples are typically delivered within 7 to 10 working days, and we ship from Pune to customers across India.
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How to specify a custom ferrite transformer: the design inputs a winder needs, from an ISO 9001:2015 certified
Learn moreSend your specification or drawing for industrial power supply transformer. NG Electronics is an ISO 9001:2015 certified company, and every enquiry is answered by our engineering and sales team in Pune.
ISO 9001:2015 Certified
Manufacturer of Toroidal Inductors,
Ferrite Transformers & Magnetic Components.
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