Circuit arrangement for generating a bias potential

US5656927A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Wilhelm Wilhelm · Munich, DE
• Josef Hoelzle · Bad Wörishofen, DE

Key dates

• Filing date: Sep 26, 1996
• Grant date: Aug 12, 1997
• Expiry date: Sep 26, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G05F3/205
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Circuit arrangement for generating a bias potential includes a first transistor connected on a collector side thereof to a supply potential, a first resistor connected between a base and the collector of the first transistor, a first current source connected between the base of the first transistor and a reference potential, a second current source connected between an emitter of the first transistor and the reference potential, a second transistor connected on a collector side thereof to the supply potential and on a base side thereof to the emitter of the first transistor, a third current source connected between the emitter of the second transistor and the reference potential, a third transistor carrying the bias potential on a collector side thereof, a second resistor connected between the emitter of the second transistor and a base of the third transistor, a third resistor connected between the collector of the third transistor and the supply potential, a first diode connected in the forward direction thereof between the base of the third transistor and the reference potential, and a fourth resistor connected between an emitter of the third transistor and the reference potenti…