Synchronism detector circuit

Details Synchronism detector circuit Synchronism detector circuit

1985-07-30

1987-07-07

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328133, H03K 526

Patent

active

046789499

ABSTRACT:
A synchronism detector circuit wherein it is arranged so that two a.c. voltages the synchronism of which is to be determined are converted, respectively, into rectangular pulses, which pulses trigger a pair of one-shot multivibrators, respectively, the logical product of the outputs from these one-shot multivibrators is provided, and the thus provided logical product causes signals indicating the states of synchronism between the a.c. voltages to be output.

REFERENCES:
patent: 3233180 (1966-02-01), Eddy
patent: 3327226 (1967-06-01), Nourney
patent: 3441342 (1969-04-01), Ball et al.
patent: 3798556 (1974-03-01), Voya et al.
patent: 3805153 (1974-04-01), Gallant
Shiro Doi et al., Journal OHM for Jun. 1983, "Uninterruptible Power Supply (CVCF) System and Influence Countermeasure", pp. 20-23.

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