Circuit for protecting switching power source from overloads and

Details Circuit for protecting switching power source from overloads and Circuit for protecting switching power source from overloads and

1994-10-19

1996-10-22

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transformer protection

361 83, 361 94, 361101, 363 80, H02H 704

Patent

active

055683436

ABSTRACT:
A protective circuit is used in conjunction with a switching power source for protecting the latter from overload and from short circuits. It is detected whether the current at the primary winding current of a switching power source transformer, the load current of the switching power source, or both exceed predetermined reference voltages. If so, supply of power to the switching power source is interrupted for a predetermined period of time, thereby bringing the switching power source into inoperable condition in this duration.

REFERENCES:
patent: 3634728 (1972-01-01), Moury
patent: 3855520 (1974-12-01), Stich
patent: 4678984 (1987-07-01), Henze
patent: 5297014 (1994-03-01), Saito et al.

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