Patent · US Expired

Integratable circuit configuration for stabilizing the operating current of a transistor by negative feedback, being suitable in particular for battery-operated devices

US5952864A · kind A · utility

1Cited by

11References

1Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Margarete Deckers · Hersbruck, DE
Lothar Musiol · Hersbruck, DE
Klaus-Jurgen Schoepf · Ismaning, DE

Key dates

Filing date	Feb 16, 1996
Grant date	Sep 14, 1999
Priority date	—
Expiry date	Feb 16, 2016

Classification

Technology area (CPC H)Electricity
CPC primaryH03F1/302
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An integratable circuit configuration for stabilizing an operating point of a transistor by negative feedback includes first, second, third and fourth terminals. The fourth terminal is connected to a fixed ground potential, and the first and fourth terminals have a supply voltage source connected therebetween. A first transistor to be stabilized by negative feedback has a collector connected to the second terminal, an emitter connected to the fourth terminal, and a base connected to the third terminal. A second transistor has an emitter connected to the second terminal, a collector connected to the third terminal, and a base. A first resistor is connected between the first terminal and the second terminal. A second resistor is connected between the base of the second transistor and the fourth terminal. A series circuit has at least one first diode and one second diode and is connected between the first terminal and the base of the second transistor.

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