Turn-on control circuit for electric devices

Details Turn-on control circuit for electric devices Turn-on control circuit for electric devices

1993-05-28

1996-07-09

Young, Brain K.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Voltage regulator protective circuits

361 29, 361 54, 361 56, H02H 700

Patent

active

055350828

ABSTRACT:
A turn-on control circuit having a comparator supplied with a turn-on voltage increasing gradually during the turn-on phase of a device for protection. When the control voltage reaches a predetermined value, the comparator supplies a diagnostic enabling signal to a diagnostic stage, which, in the event an undesired condition is detected at an output of the device, supplies a clamp enabling signal to the control terminal of a clamping transistor located between the input of the circuit and ground, and which, when enabled, prevents the turn-on voltage from increasing further, and so prevents the device from being turned on.

REFERENCES:
patent: 4146847 (1979-03-01), Otao et al.
patent: 4517618 (1985-05-01), Frank
patent: 4638507 (1987-01-01), Palara et al.
patent: 5202590 (1993-04-01), Liepold et al.

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