Voltage wand

Details Voltage wand Voltage wand

1982-09-30

1985-03-12

Levy, Stewart J.

Electricity: measuring and testing

Testing potential in specific environment

Voltage probe

G01R 3102

Patent

active

045047812

ABSTRACT:
In many applications for checking electrical circuits, machinery, and power sources, in the home, in the workshop or laboratory, or in the field, it is desirable to quickly determine if a voltage is present. The voltage wand comprises a high input impedance C-MOS amplifier circuit attached to a conductive probe for detecting the presence of an AC, pulsed DC or DC voltage. The C-MOS amplifier circuit is connected to a light emitting diode which lights to indicate the presence of a voltage. To detect AC or pulsed DC, the probe is brought into proximity but not contact with the voltage source and the voltage field is picked up by the probe. To detect DC, a circuit is completed through the voltage source and voltage wand.

REFERENCES:
patent: 3872390 (1975-03-01), Nash
patent: 4205264 (1980-05-01), Gold
patent: 4366434 (1982-12-01), Ellis

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