LOGARITHMIC AMPLIFIER

Patent · Tue Mar 10 00:00:00 EST 1959

OSTI ID:4250269

Wade, E J; Stone, R S

Electronic,amplifier circuits, especially a logai-ithmic amplifier characterizxed by its greatly improved strability are discussed. According to the in ention, means are provided to feed bach the output valtagee to a diode in the amplifier input circuit, the diode being utilized to produce the logarithmic characteristics. The diode is tics, The diode isition therewith and having its filament operated from thc same source s the filament of the logarithmic diode. A bias current of relatively large value compareii with the signal current is continuously passed through the compiting dioie to render the diode insensitivy to variations in the signal current. by this odes kdu to variaelled, so that the stability of the amlifier will be unimpaired.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-015543
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 2877348
• OSTI ID: 4250269
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-59
• Country of Publication: United States
• Language: English

Related Subjects

PHYSICS AND MATHEMATICS
AMPLIFIERS
CIRCUITS
CURRENTS
DIODES
ELECTRIC POTENTIAL
ELECTRON TUBES
SIGNALS
STABILITY
VARIATIONS
WIRES