ULTRA-STABILIZED D. C. AMPLIFIER

Patent · Tue Feb 17 00:00:00 EST 1959

OSTI ID:4246065

Hartwig, E C; Kuenning, R W; Acker, R C

An improved circuit is described for stabilizing the drift and minimizing the noise and hum level of d-c amplifiers so that the output voltage will be zero when the input is zero. In its detailed aspects, the disclosed circuit incorporates a d-c amplifier having a signal input, a second input, and an output circuit coupled back to the first input of the amplifier through inverse feedback means. An electronically driven chopper having a pair of fixed contacts and a moveable contact alternately connects the two inputs of a difference amplifier to the signal input. The A. E. error signal produced in the difference amplifier is amplified, rectified, and applied to the second input of the amplifier as the d-c stabilizing voltage.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-015330
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 2874235
• OSTI ID: 4246065
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-59
• Country of Publication: United States
• Language: English

Related Subjects

INSTRUMENTS
AMPLIFIERS
BACKGROUND
CHOPPERS
ELECTRIC POTENTIAL
ELECTRONIC EQUIPMENT
PLANNING
PULSE GENERATORS
RECTIFIERS
STABILITY