Inrush-current limiter for switching regulator power supply

Details Inrush-current limiter for switching regulator power supply Inrush-current limiter for switching regulator power supply

1987-05-07

1988-01-12

Beha, Jr., William H.

Electric power conversion systems

Current conversion

With starting arrangement

323901, 363 89, H02M 115, H02M 706

Patent

active

047195533

ABSTRACT:
A DC voltage power supply circuit for suppressing turn-on transients applied to a switching voltage regulator circuit includes a relatively high impedance current suppression element connected in series between a rectifier circuit and a capacitive load, means for sensing a voltage drop developed across the suppression element, a diode network for developing a reference potential, and a silicon-controlled rectifier having a gate electrode responsive to the voltage drop developed across the current suppression element and the reference potential developed across the diode, for energizing a relay having contacts for disabling the switching regulator from supplying the load during the initial turn-on phase, and for shunting the current suppression element and activating the switching regulator after the capacitive load is substantially charged.

REFERENCES:
patent: 4271460 (1981-06-01), Baker
patent: 4307440 (1981-12-01), Inoue et al.

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