Output circuit with transistor overcurrent protection

Details Output circuit with transistor overcurrent protection Output circuit with transistor overcurrent protection

2007-07-03

2007-07-03

Mullins, Burton S. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

Reexamination Certificate

active

10866826

ABSTRACT:
When the overcurrent detection circuit detects that a voltage drop of the output transistor exceeds a threshold value, it turns on the switch by the first operational amplifier. In the shut-down signal generation circuit, the capacitor is charged with a charge current determined based on a current depending on the voltage drop of the output transistor. The shut-down signal generation circuit generates a shut-down signal to turn off the output switch when a voltage of the capacitor exceeds a voltage of the inverting input terminal of the second operational amplifier.

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