D.C. power supply circuit

Details D.C. power supply circuit D.C. power supply circuit

1975-11-04

1977-05-17

Miller, J. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 18, 361 88, H02H 320

Patent

active

040244377

ABSTRACT:
A power supply protective circuit that responds to transient overloads, permanent overloads and excessive overloads to protect the power supply and the related switching transistor from damage. The circuit utilizes an astable multi-vibrator which is designed to be pulse modulated by transient overloads. In addition, the multi-vibrator is designed to be turned-off by permanent overloads and by an excessive overload condition. By this arrangement, the multi-vibrator remains in operation for normal transient overloads and does not require resetting manually when such an overload condition occurs.

REFERENCES:
patent: 3573598 (1971-04-01), Clarke et al.
patent: 3670234 (1972-06-01), Joyce
patent: 3733540 (1973-05-01), Hawkins
patent: 3805142 (1974-04-01), Rando
patent: 3816809 (1974-06-01), Kuster
patent: 3859586 (1975-01-01), Wadlington
patent: 3916288 (1975-10-01), Hicks et al.

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