Frequency counter

Details Frequency counter Frequency counter

1994-09-21

1995-11-28

Trans, Vincent N.

Boots, shoes, and leggings

324 7648, 324 7662, 324 7674, G01R 2300, G06F 1700

Patent

active

054714028

ABSTRACT:
An improved frequency counter for detecting and distinguishing a main input signal from amplifier generated self-oscillating signals, wherein the frequency counter generally includes an input circuit having an amplifier and Schmitt-Trigger, a microprocessor for controlling the main gate to a main counter and user inputs, and a signal level display, all of which communicate with the main counter, a display driver and a frequency display for more accurate frequency measurements.

REFERENCES:
patent: 4027146 (1977-05-01), Gilmore
patent: 4258423 (1981-03-01), Lane et al.
patent: 4310891 (1982-01-01), Niki
patent: 4319329 (1982-03-01), Girgis et al.
patent: 4350950 (1982-09-01), Waldmann et al.
patent: 4395762 (1983-07-01), Wondergem
patent: 4996474 (1991-02-01), Tambe et al.
patent: 5043909 (1991-08-01), Meyers et al.

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