Electronic transformer composed of flyback converters

Details Electronic transformer composed of flyback converters Electronic transformer composed of flyback converters

1984-09-04

1986-07-01

Beha, Jr., William H.

Electric power conversion systems

Cascaded or combined, diverse conversions in which the...

Current and frequency

323222, 363163, H02M 5458

Patent

active

045983496

ABSTRACT:
An electronic transformer comprising first and second switching converters for converting the positive and negative half periods, respectively, of an input alternating voltage into high frequency voltages, which are rectified to produce an output alternating voltage at the input voltage frequency. The converters are constructed as fly-back converters with the choke coils as well as the output and input capacitors combined into elements common to the two respective high frequency fly-back converters. First and second backward diodes are connected parallel to each switching transistors of the two fly-back converters and each converter includes an auxiliary switching transistor switching at the input frequency to change over the converters from one half period to the other of the input AC voltage.

REFERENCES:
patent: 1973055 (1934-09-01), Fitzgerald
patent: 4408268 (1983-10-01), Peters et al.
patent: 4504896 (1985-03-01), Easter et al.
Peltz, "Single Coil 9 Voltage Converter", New Electronics, vol. 15, No. 6, p. 26 (Mar. 23, 1982).

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