Current limiting circuit and method

Details Current limiting circuit and method Current limiting circuit and method

1975-05-19

1976-12-07

Broome, Harold

Electricity: power supply or regulation systems

Remote sensing

317 33R, 323 4, 323 9, H02H 308, H02H 720

Patent

active

039964981

ABSTRACT:
A sensing transistor has its base and emitter electrodes connected across a sensing resistor connected in series with the collector electrode of an output transistor. Whenever the collector current to the output transistor tends to exceed a predetermined value, the sensing transistor is turned on to reduce the base current being supplied from a current source to the base of the output transistor to thereby reduce this collector current to less than this value. This reduction is accomplished by diverting the excess portion of the source current through the collector-emitter current path of the sensing transistor, into the collector electrode of the output transistor.

REFERENCES:
patent: 3234453 (1966-02-01), Klees et al.
patent: 3527997 (1970-09-01), Nercessian
patent: 3714512 (1973-01-01), Grabowski

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