Self-oscillation type DC-DC converter

Details Self-oscillation type DC-DC converter Self-oscillation type DC-DC converter

1994-03-18

1995-02-14

Stephan, Steven L.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323351, G05F 144

Patent

active

053898710

ABSTRACT:
In a non-insulated, self-oscillation type DC-DC converter, a first PNP switching transistor (Q1) has the emitter thereof connected to the emitter of a second switching transistor (Q2) of the same conductivity type as the first switching transistor. The base of the first switching transistor (Q1) is connected to the collector of the second switching transistor (Q2). The base of the first switching transistor (Q1) is connected to the base of the second switching transistor (Q2) through a resistor R2. A feedback circuit (4) is connected between the collector of the first switching transistor (Q1) and the base of the second switching transistor (Q2).

REFERENCES:
patent: 4180852 (1979-12-01), Koizumi et al.
patent: 4242629 (1980-12-01), Shuey
patent: 5309082 (1994-05-01), Payne

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