Short-circuit-resistant trigger circuit layout for an electrical

Details Short-circuit-resistant trigger circuit layout for an electrical Short-circuit-resistant trigger circuit layout for an electrical

1982-05-24

1984-05-29

Shoop, William M.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323351, 361 18, G05F 156

Patent

active

044517785

ABSTRACT:
A short-circuit-resistant trigger circuit layout is proposed for an electrical consumer for motor vehicles. The trigger circuit layout is located in series with a switching transistor, which is preceded in turn by an operational amplifier whose negative input is coupled with the junction point of two resistors parallel to the transistor and whose positive input receives both an average constant potential and a dynamic switching signal. In case of error, that is, in case of a short-circuit consumer, the transistor, which has initially been switched on, switches back into its blocked state after a predetermined time constant has elapsed. The short-circuit current flowing during this open phase can be limited by means of a resistor in series with the transistor.

REFERENCES:
patent: 3597657 (1971-08-01), Fredricsson
patent: 3654518 (1972-04-01), Phelps et al.
patent: 4055794 (1977-10-01), Ickes et al.
patent: 4355277 (1982-10-01), Davis et al.

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