Apparatus for protecting an integrated circuit from reverse volt

Details Apparatus for protecting an integrated circuit from reverse volt Apparatus for protecting an integrated circuit from reverse volt

1988-09-09

1990-03-20

Hix, L. T.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Including means for using, or compensating for, the induced...

3611691, H01H 4700

Patent

active

049106350

ABSTRACT:
An apparatus for protecting an integrated circuit from reverse voltages caused by an inductive load. An integrated circuit (397) drives a relay (411). A first diode (407) is used in a conventional manner to limit the reverse voltage generated by the relay (411). A second diode (410) further suppresses the reverse voltage and protects the integrated circuit (397).

REFERENCES:
patent: 3374422 (1968-03-01), Blume
patent: 4500938 (1985-02-01), Dulin
patent: 4716274 (1987-12-01), Gilliland
patent: 4785149 (1988-11-01), Gilliland
Motorola Data Sheets for IN5400 through IN5406 Rectifiers; pp. 3-45 and 3-46.

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