G - Physics – 01 – R
Patent
G - Physics
01
R
324/58.3
G01R 31/08 (2006.01)
Patent
CA 1085927
ABSTRACT OF THE DISCLOSURE An electrical testing instrument including an amplifier circuit having a pair of inputs, one com- prising a probe and the other being adapted for manual engagement by the user for completing an input circuit through the body of the user. The circuit has a bat- tery and a current-responsive indicator in its output circuit to provide a signal when current flows in the input circuit to provide a critical forward biasing of the amplifier. The battery is connected to furnish such input current when the input terminals are con- nected in a closed circuit having a resistance of at least approximately the resistance of the user's body. The amplifier circuit is further arranged that when the probe is contacted with a live AC power line and the manually engageable input terminal is so manually engaged, an operating indicating current will also be present in the output circuit.
294089
George H. Riches And Associates
Gold Charles
Gold Lawrence W.
LandOfFree
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