Overcurrent protection circuit

Details Overcurrent protection circuit Overcurrent protection circuit

H - Electricity

02

H

323/6

H02H 9/02 (2006.01)

Patent

CA 1253915

OVERCURRENT PROTECTION CIRCUIT ABSTRACT OF THE DISCLOSURE An overcurrent protection circuit including a first transistor, a second transistor, and an integrator. The first transistor operates to control a current flow from a power source to a load. The second transistor is turned on when an overcurrent flows through the first transistor. The overcurrent is detected by watching the collector-emitter voltage of the first transistor. Thus, the second transistor operates to bypass the base current to be supplied to the first transistor with a certain delay time defined by a delay part, which enables an instantaneous overcurrent to be ignored.

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