Protective circuit arrangement for protecting semiconductor comp

Details Protective circuit arrangement for protecting semiconductor comp Protective circuit arrangement for protecting semiconductor comp

1985-05-28

1987-08-11

Envall, Jr., Roy N.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 56, 361111, 307637, H02H 904

Patent

active

046866027

ABSTRACT:
A protective circuit arrangement is described for protecting semiconductor components connected to input and output terminals (10) against overvoltages in bipolar integrated circuits. The circuit arrangement contains at least one supply voltage terminal (12) and a ground terminal (14). Between the ground terminal (14) and at least the input and output terminals (10) which are connected to components sensitive to overvoltage a thyristor-tetrode (22) having a first control electrode (28) and a second control electrode (30) is inserted, the first control electrode (28) being connected to a line (18) which in the operative state of the integrated circuit lies at a voltage above the ground potential and the second control electrode (30) being connected to the ground terminal 14.

REFERENCES:
patent: 4071779 (1978-01-01), Kawanami et al.
patent: 4302792 (1981-11-01), Harwood
patent: 4439802 (1984-03-01), Johansson
patent: 4484244 (1984-11-01), Avery
patent: 4567500 (1986-01-01), Avery

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