Voltage detectors and electrical continuity checkers

Details Voltage detectors and electrical continuity checkers Voltage detectors and electrical continuity checkers

1980-10-14

1982-12-28

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 725, 324133, 324149, G01R 3102

Patent

active

043664342

ABSTRACT:
A combined voltage detector and electrical continuity checker in the form of a pencil having a needle capable of piercing electrical insulation, a pair of light emitting diodes for determining the polarity of the voltage, a third light emitting diode and associated circuitry to perform a continuity check, a flexible cable and chip which can be plugged into the pencil to perform either one of the tests in conjunction with the needle, and biasing arrangements for the light emitting diodes in order to lower their threshold of conduction.

REFERENCES:
patent: 1744840 (1930-01-01), Strieby et al.
patent: 2851659 (1958-09-01), Ladrick
patent: 3145337 (1964-08-01), Lipson
patent: 3259754 (1966-07-01), Matheson
patent: 3628059 (1971-12-01), Niu
patent: 4011508 (1977-03-01), Gabor
patent: 4028621 (1977-06-01), Bloxam
patent: 4207517 (1980-06-01), Bloxam
patent: 4210862 (1980-07-01), Koslar
Maddison et al., Digital Logic Checker, Practical Electronics, Feb. 1977, p. 138.

Affiliated with

Also associated with

Rating

Voltage detectors and electrical continuity checkers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Voltage detectors and electrical continuity checkers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage detectors and electrical continuity checkers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1339511