Electrical mean square voltage sensor

Details Electrical mean square voltage sensor Electrical mean square voltage sensor

1978-09-01

1980-08-19

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307308, 307318, 250552, 323 21, H03K 342

Patent

active

042186277

ABSTRACT:
A sensor for producing an electrical signal parameter responsive to the mean square of an applied alternating voltage has a rectifier element, and has a zener diode element electrically in series with a light-emitting diode element across the direct voltage which the rectifier element produces. The polarity of the direct voltage applies reverse voltage to the zener diode element and applies forward voltage to the light-emitting diode element. A photoconductor is optically coupled to receive electroluminescense which the light-emitting diode element emits.

REFERENCES:
patent: 3060330 (1962-10-01), Trampel
patent: 4063121 (1977-12-01), Bartlett
patent: 4079272 (1978-03-01), Howatt
IBM Tech. Disclre. Bttn., A.C. Voltage Present Sensor, K. A. Braithwaite, vol. 20, No. 3, 8/77, p. 1135.

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