Integrated overload protection circuit

Details Integrated overload protection circuit Integrated overload protection circuit

H - Electricity

03

F

356/184

H03F 1/32 (2006.01) H01L 27/02 (2006.01) H01L 27/06 (2006.01)

Patent

CA 1185379

INTEGRATED OVERLOAD PROTECTION CIRCUIT Abstract of the Disclosure An integrated overload protection circuit is used to protect a bipolar transistor used in the common emitter configuration. The protective circuit comprises a bipolar transistor of opposite type to the protected amplifying transistor. The protecting transistor is connected with its base to the collector of the amplifying transistor and with its collector connected to the terminal of the power supply which is not connected to a terminal of the load resistor of the protected device. The emitter of the protecting transistor is preferably connected to the base of the protected transistor through a protective resistor. Inputs to the protected transistor are provided at the interconnection of the emitter of the protecting transistor with one terminal of the protective resistor.

404102

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