Allowing the use of very low Rds-on mosfets at 500/600V with their slow inherent diodes, our low loss super snubber gives you efficiency gains at any power level (up to 100kHz) for inverter stages and reduces EMC while adding only $4 (less in volume).

Front end unity power factor rectifiers and complete isolated output rectifiers now available from Preston with lowest parts count and simple control - for robust and reliable operation.

Military specified high power converter block:

For powering the next generation of light weight pc's and TFT monitors - our new compact adapter technology breaks new ground in, size, weight and efficiency!

We have the two FET - two diode booster for UPF front ends that does away with the input diode bridge!!!

24dBuV per metre measured @ 1m. We cure power supply emissions for a military blood fridge. Conducted emissions down to 10kHz as well

More and more design groups are asking themselves - why wait for the prototype to fail EMC before calling on experienced input from the people who have done it for years...

Preston designs and manufactures to order specialised high power DC-DC Converters, high efficiency & low RFI, custom shapes (e.g. cylindrical) high speed control loops for quickly fluctuating loads, proven reliability.

Non optimal firing of power transistors, instability & susceptibility of a control ckt can result in your power ckt making more RFI than it really has to...