Output circuit for outputting control signal to controlled appar

Details Output circuit for outputting control signal to controlled appar Output circuit for outputting control signal to controlled appar

1992-07-30

1994-05-24

Sikes, William L.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3072966, 307311, H03K 301, H03K 342

Patent

active

053151658

ABSTRACT:
An output circuit for outputting a control signal through a transistor to a controlled apparatus including an output detecting section for detecting the control signal and an external power supply for supplying a power to the output detecting section, a voltage due to the external power supply being applied to between a collector and emitter. The output circuit comprises a capacitor coupled in parallel to an output detecting circuit comprising the output detecting section and the transistor coupled in series to each other and resistor means coupled in series to a parallel circuit comprising the output detecting circuit and the capacitor so as to give a series resistance with respect to the parallel circuit. The output circuit further comprises a switch disposed to be parallel to the resistor for bypassing the resistor to substantially reduce the series resistance up to zero when a voltage between terminals of the capacitor is above a predetermined value. This arrangement can prevent the transistor from instantaneously taking the ON state, thereafter ensuring the normal operation by bypassing the resistor means through the switch.

REFERENCES:
patent: 4647794 (1987-03-01), Guajardo
patent: 4682061 (1987-07-01), Donovan
patent: 5068545 (1991-11-01), Molnar
patent: 5089948 (1992-02-01), Brown et al.
patent: 5111070 (1992-05-01), Murphy et al.
patent: 5175487 (1992-12-01), Inoue
patent: 5189307 (1993-02-01), Fabian

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