Circuit tester with reliable indication means

Details Circuit tester with reliable indication means Circuit tester with reliable indication means

1976-03-31

1978-04-04

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324122, G01R 3102, G01R 1916

Patent

active

040829952

ABSTRACT:
An electrical circuit tester having hot, neutral and ground terminals adapted for connection to the hot, neutral and ground contacts, respectively, of a household electrical receptacle is provided with three glow lamps and three resistors connected in series with the glow lamps, each series combination of a glow lamp and a resistor being connected between a different pair of the terminals. Each glow lamp is shunted by an associated shunt resistor, the shunt resistor serving to lower the voltage across the glow lamp when full line voltage is impressed across a series combination of that glow lamp and any one other glow lamp.

REFERENCES:
patent: 1918834 (1933-07-01), Crago
patent: 2429764 (1947-10-01), Moore
patent: 2917705 (1959-12-01), Clough
patent: 3383588 (1968-05-01), Stoll et al.
patent: 3513393 (1970-05-01), Myers
patent: 3559200 (1971-01-01), Walters
patent: 3967195 (1976-06-01), Averitt et al.

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