Patent · US Expired

Integratable amplifier circuit

US5034700A · kind A · utility

9Cited by

4References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Helmut Herrmann · Hersbruck, DE
Rudolf Koch · Oberhaching, DE

Key dates

Filing date	Mar 28, 1990
Grant date	Jul 23, 1991
Priority date	—
Expiry date	Mar 28, 2010

Classification

Technology area (CPC H)Electricity
CPC primaryH03F1/308
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An integratable amplifier circuit includes a preamplifier stage, a drive stage, a push-pull end stage, and a regulating stage forming a differential value from a reference current and from a measurement current proportional to the static current flowing through the push-pull end stage. The regulating stage stores the diferential value or a value proportional thereto upon the occurrence of a control signal at a control input indicating the non-level control of the preamplifier stage and sets the static current of the push-pull end stage by varying the operating point of the push-pull end stage as a function of the stored value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.