Transistor circuit with E/C voltage limiter

Details Transistor circuit with E/C voltage limiter Transistor circuit with E/C voltage limiter

1987-06-16

1988-11-01

Salce, Patrick R.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323278, 323289, 363 50, 363 89, G05F 156

Patent

active

047822805

ABSTRACT:
In a series-regulation transistor (T.sub.1), which is driven by a drive circuit (10), for generating a constant voltage across a load (R.sub.L) the occurrence of comparatively large substrate currents in the case of saturation of the series-regulation transistor (T.sub.1) is precluded by a limiting circuit comprising a resistor (R.sub.1) arranged in the base line of the series-regulation transistor (T.sub.1) and a second transistor (T.sub.2) whose base-emitter junction is arranged across the resistor (R.sub.1) and the base-collector junction of the series-regulation transistor (T.sub.1). The collector of the second transistor is connected to a control input (12) of the drive circuit.

REFERENCES:
patent: 3078410 (1963-02-01), Thomas
patent: 3113260 (1963-12-01), Wiley
patent: 3182246 (1965-05-01), Lloyd
patent: 3445751 (1969-05-01), Easter
patent: 3711763 (1973-01-01), Peterson
patent: 3771021 (1973-11-01), Bierly
patent: 3939399 (1976-02-01), Funatsu et al.
patent: 4254372 (1981-03-01), Moore, Jr.
patent: 4390828 (1983-06-01), Converse et al.

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