Base drive inhibit circuit

Details Base drive inhibit circuit Base drive inhibit circuit

1976-06-11

1977-12-06

Zazworsky, Juan

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307243, 323 23, 330262, H03K 1760

Patent

active

040619303

ABSTRACT:
A base drive inhibit circuit for positive and negative phase transistors of a switching amplifier. The circuit comprises a pair of comparators for comparing the voltage between the collector and emitter elements of the transistors with an appropriate reference voltage, and provides a signal to supply base drive voltage, when their associated output transistor is in a forward biased state and the level of reference voltage is less than the level of voltage between the collector and emitter. A logic control circuit supplies base drive voltage to one of the transistors when both a drive signal from an external source is in a proper polarity state and the output signal from the comparator indicates that the transistor is in a forward biased state.
A timer is provided to delay base drive voltage to either transistor when the base drive signal is in a transition between polarity states.

REFERENCES:
patent: 3483425 (1969-12-01), Yanishevsky
patent: 3490027 (1970-01-01), Galetto et al.

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