Protective circuit for BiCMOS/CMOS circuitry in hybrid VCC syste

Details Protective circuit for BiCMOS/CMOS circuitry in hybrid VCC syste Protective circuit for BiCMOS/CMOS circuitry in hybrid VCC syste

1997-01-24

1998-11-03

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 18, H02H 320

Patent

active

058318062

ABSTRACT:
The present invention relates to a protective circuit for BiCMOS/CMOS circuitry in hybrid VCC systems during H operation. The object of the invention is to create such a protective circuit, which has the least possible influence on the circuitry employing it and only takes up a small amount of space. In order to attain such aim a protective circuit monitors the voltage (VOH) present at its output (AUS) by comparison with a predetermined voltage (REF) and when such predetermined voltage is exceeded it terminates H operation. The protective circuit is so designed that it only taps a negligible monitoring current component (Iex') from the output (AUS).

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