Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Balancing
Patent
1976-03-23
1978-03-28
Segal, Robert
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Balancing
324 99D, 324100, G01R 1706
Patent
active
040817458
ABSTRACT:
An unknown voltage to be measured is applied to the input of an automatic servo-actuated potentiometer which when unbalanced by an unknown voltage is servo-actuated to restore a balanced condition with the extent of the displacement necessary for such restoration being indicated on a scale as an analog measure of the input voltage. The absolute value of the voltage across the potentiometer is measured and is supplied to a balance detecting circuit which upon a change in said absolute value actuates a control gate to transmit pulses from a pulse generator to a set of binary counters which have their output signals applied through a binary-decimal converter to a digital display. The counter output signals are also converted to an analog voltage which is fed to the balance detecting circuit and when the converted analog voltage equals the absolute detected voltage, the pulse count is terminated. To indicate input voltages of either polarity, the pulses are fed selectively to the plus or minus input of the binary counters by means of a gating array controlled by means of a comparator which receives the absolute voltage and the converted analog voltage and determines which is the greater for purposes of appropriately actuating the gate array.
REFERENCES:
patent: 1254620 (1918-01-01), Newman
patent: 2836356 (1958-05-01), Forrest et al.
patent: 3064193 (1962-11-01), Grubb et al.
patent: 3267374 (1966-08-01), McAdam et al.
patent: 3421083 (1969-01-01), Bosworth et al.
patent: 3777263 (1973-12-01), Perron et al.
Daniel William J.
Karlsen Ernest F.
Segal Robert
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