Transistor circuit

Details Transistor circuit Transistor circuit

1975-02-04

1977-08-09

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

307354, G01R 3122, H03K 5153

Patent

active

040413888

ABSTRACT:
The base-emitter junction of a bipolar transistor is first forward biased to place the transistor in a state of conduction and the forward bias is then removed. A discharge path is provided for the base-emitter capacitance of the transistor, this path including a source of reverse bias voltage for the base-emitter junction. A sensing circuit indicates when the base-emitter capacitance has discharged through the path sufficiently to permit the base-emitter junction to become reverse biased, which in turn indicates that the transistor has cutoff.

REFERENCES:
patent: 3350641 (1967-10-01), Lubkin et al.
patent: 3697782 (1972-10-01), Matouka

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