Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1978-07-19
1980-09-23
Tokar, Michael J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 77A, G01R 2302
Patent
active
042245699
ABSTRACT:
A stabilized display for electronic instruments that make voltage measurements, frequency measurements, and the like is disclosed. This stabilized display includes a counter, a register, a comparator, and control logic. The counter generates counts, during spaced apart time intervals, that are representative of measurements made by the instrument. Selected ones of these counts are transferred to the register in response to a LATCH signal, where they are displayed. The comparator connects to the counter and the register. It generates output signals indicating whether or not the contents of the counter and register are equal. These output signals are received by the control logic, which generates the LATCH signal in response to a predetermined sequence of non-equality indications from the comparator.
REFERENCES:
patent: 3735387 (1973-05-01), Miller
National Semiconductor Corporation
Tokar Michael J.
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