Power supply circuit

Details Power supply circuit Power supply circuit

1986-10-01

1987-12-01

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 32, 363 18, 363 21, H02J 710, H02M 3335

Patent

active

047106956

ABSTRACT:
A transformer employed in a power supply circuit of a ringing choke converter type comprises two feedback windings which share the current to be supplied to the base of a switching transistor for blocking oscillation. By virtue of the provision of the two feedback windings, a speedup capacitor for delivering a trigger current to the switching transistor is allowed to have less capacity, while the amount of heat generation of a resistor for regulating the trigger current can be restrained. These advantageous features of the present invention produces the effect that the bulk and weight of the capacitor and the resistor can be reduced, which leads to curtailing of the cost of the components as well as enhancing of the reliability of the circuit. The effect is more appreciable when a higher output is required.

REFERENCES:
patent: 4333139 (1982-06-01), Owen et al.
patent: 4376263 (1983-03-01), Pittroff et al.
patent: 4394719 (1983-07-01), Moberg
patent: 4464619 (1984-08-01), Schwarz et al.
patent: 4523139 (1985-06-01), Schwarz et al.
patent: 4652984 (1987-03-01), van der Akker et al.

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