Soft turn-on power

Details Soft turn-on power Soft turn-on power

1979-02-22

1981-06-02

Miller, J. D.

Electric power conversion systems

Current conversion

With starting arrangement

363 50, 323901, 323908, 361 13, H02H 710

Patent

active

042714605

ABSTRACT:
A circuit for suppressing surge or transient currents between a DC power supply and a capacitive load includes a suppression impedance of relatively high impedance connected in series with the load between the DC supply and load, a transistorized control circuit for sensing the voltage across the load, and producing a firing signal when the level of voltage exceeds a predetermined level, and an SCR having its main current path connected in parallel with the suppression impedance, and its gate electrode receptive of the firing signal for turning on the SCR to by-pass the suppression impedance subsequent to application of power to the load.

REFERENCES:
patent: 2626378 (1953-01-01), Levy, Jr.
patent: 3412314 (1968-11-01), Crane
patent: 3769568 (1973-10-01), Hamilton et al.
patent: 3781637 (1973-12-01), Potter
patent: 3787756 (1974-01-01), Berger
patent: 3935511 (1976-01-01), Boulanger et al.
patent: 3935527 (1976-01-01), Michelet et al.
patent: 4131927 (1978-12-01), Tsuchiya et al.

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