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Single stage UPF offline psu's for mass production - now up to 2.5kW off single phase mains.
High efficiency, low RFI, single stage converters providing near unity input power factor and a wide choice of isolated output power designs...
Electric vehicle (EV) charger - 375V out, 6 amps unity power factor from 220AC supply - Lowest size & weight.
Using our best IP - low weight & size in car EV chargers with unity input power factor are here. Model-2250 outputs up to 375VDC @ 6amp, (2250 watts). Fully sealed so you can bolt it on anywhere. Advanced charging algorithms for any battery type.
September 28, 2003
Preston converter impresses Australian Ministry of Defence
Military specified high power converter progresses to final acceptance testing
May 26, 2008
Harmonic cancellation; 4 wire systems to 100kVA
Preston is one of the fore-runners in developing state of the art control & hardware to inject antiphase harmonics into low voltage systems (400V line to line) to cancel triplens and the rest, up to the 20th & provide shock reduction during load stepping.
September 2, 2003

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