Darlington amplifier with excess-current protection

Details Darlington amplifier with excess-current protection Darlington amplifier with excess-current protection

1980-09-29

1983-02-15

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including protection means

330307, H02H 720

Patent

active

043743641

ABSTRACT:
A Darlington amplifier comprising an auxiliary transistor (16) for overload protection. The base of the auxiliary transistor is connected to a tapping (17) provided on a resistor (12) included between the emitter and base of the output transistor (11) of the amplifier, which resistor assists in biassing said auxiliary transistor.

REFERENCES:
patent: 3564443 (1971-02-01), Nagata
patent: 3988693 (1976-10-01), Seki

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