Regulated single-ended self oscillating, DC-DC converter

Details Regulated single-ended self oscillating, DC-DC converter Regulated single-ended self oscillating, DC-DC converter

1981-11-30

1984-04-17

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

331112, H02P 1322

Patent

active

044438389

ABSTRACT:
A switching regulator having a blocking oscillator including a transistor, and a transformer with primary, secondary, and positive feedback windings. A rectifying and smoothing circuit is connected to the load and includes a photodiode coupled to a phototransistor connected to the blocking oscillator transistor in the feedback path for adjusting feedback to maintain output voltage at a constant level. A second positive feedback circuit connects between the phototransistor and the blocking oscillator transistor to assure stable oscillation of the blocking oscillator.

REFERENCES:
patent: 3435320 (1969-03-01), Lee et al.
patent: 4376263 (1983-03-01), Pittroff et al.
patent: 4378585 (1983-03-01), Bete
Electronics, vol. 19, No. 26, pp. 100-104, (Dec. 21, 1978), 59047 0039.

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