Transistor turn off current sensing circuit

Details Transistor turn off current sensing circuit Transistor turn off current sensing circuit

1981-02-12

1982-07-27

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363132, 363134, H02M 7537

Patent

active

043420761

ABSTRACT:
A transistor current sensing circuit is provided for a power output transistor whose drive circuit includes a current controlled feedback transformer that has a current limited direct current source connected to the secondary winding of the transformer wherein the change in voltage level of the secondary winding upon the completion of turn-off of the output transistor is used as a signal to initiate turn-on of another associated transistor.

REFERENCES:
patent: 3305761 (1967-02-01), Heinrich et al.
patent: 3412316 (1968-11-01), Kernick
patent: 3670234 (1972-06-01), Joyce
patent: 3683208 (1972-08-01), Burens
patent: 3715648 (1973-02-01), Kernick et al.

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