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Title: ZERO SUPPRESSION FOR RECORDERS

A zero-suppression circuit for self-balancing recorder instruments is presented. The essential elements of the circuit include a converter-amplifier having two inputs, one for a reference voltage and the other for the signal voltage under analysis, and a servomotor with two control windings, one coupled to the a-c output of the converter-amplifier and the other receiving a reference input. Each input circuit to the converter-amplifier has a variable potentiometer and the sliders of the potentiometer are ganged together for movement by the servoinotor. The particular noveity of the circuit resides in the selection of resistance values for the potentiometer and a resistor in series with the potentiometer of the signal circuit to ensure the full value of signal voltage variation is impressed on a recorder mechanism driven by servomotor.
Authors:
Publication Date:
OSTI Identifier:
4263336
Report Number(s):
US 2866939
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Research Org:
Originating Research Org. not identified
Country of Publication:
United States
Language:
English
Subject:
PHYSICS AND MATHEMATICS; AMPLIFIERS; CIRCUITS; COHEN EQUATION; CONVERSION; CURRENTS; DIFFUSION; ELECTRIC POTENTIAL; ENRICHMENT; EQUATIONS; INSTRUMENTS; ISOTOPE SEPARATION; NUMERICALS; OPERATION; OSCILLATIONS; PULSES; QUANTITATIVE ANALYSIS; RECORDING SYSTEMS; RESISTORS; SIGNALS