Device for protecting power supply circuit

Details Device for protecting power supply circuit Device for protecting power supply circuit

1992-09-03

1995-01-10

DeBoer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Voltage regulator protective circuits

361 92, 361 45, H02H 710

Patent

active

053812948

ABSTRACT:
A device for protecting a power supply which is preferable for television receivers, etc. is disclosed. A diode is connected between a secondary anode of a power supply voltage feedback control photocoupler and a load of the power supply. When a voltage on the load is lowered due to an abnormality such as short-circuiting of the load, a control current for said power supply voltage feedback control photocoupler is caused to flow to the load via said diode to interrupt the control current for stopping the operation of the power supply. Overheating and/or breaking of components due to eddy current can be prevented on occurrence of an abnormality such as short-circuiting.

REFERENCES:
patent: 4979067 (1990-12-01), Foley

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