Inrush current limiter

Details Inrush current limiter Inrush current limiter

1975-01-06

1976-12-07

Pellinen, A. D.

317 31, H02M 108

Patent

active

039965066

ABSTRACT:
A circuit arrangement for limiting turn-on current inrush and current rate of rise in DC-to-DC power converters. A transistor control circuit is disposed between the input DC power source and the transistor oscillator circuit of the converter to provide a ramp of current thereto. The transistor control circuit functions as a time-variable current limiter initially while in the active region and as a saturated switch in the steady-state region. A feedback arrangement allows the saturation drive current to be provided from the converter at a lower voltage level than that which may be required from the DC power source to reduce dissipation and increase efficiency.

REFERENCES:
patent: 2968739 (1961-01-01), Mohler
patent: 3038127 (1962-06-01), Wofford
patent: 3289098 (1966-11-01), Cannalte
patent: 3401327 (1968-09-01), Leppert
Duspiva, "Inverter Start Circuit", IBM Technical Disclosure Bulletin, vol. 17 No. 3 Aug. 1974, pp. 915, 916.

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