The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 1997
Filed:
Apr. 27, 1995
Deutsche Thomson-Brandt GmbH, Villingen-Schwenningen, DE;
Abstract
An apparatus for generating an intermediate voltage having a value between a positive voltage supply value and a negative supply value. The apparatus has low power dissipation and is dynamically stable over a range of external supply voltages. The apparatus comprises a voltage comparator having first and second input terminals and a control signal output terminal. A reference voltage generator is coupled to the positive voltage supply and generates a reference voltage which is coupled to the first input terminal of the comparator. A device having a zener characteristic is coupled to the positive voltage supply and generates a voltage which is coupled to the second input terminal of the comparator. A current source is coupled to the negative voltage supply and generates a current which is coupled to a terminal, to form the intermediate voltage, and is also coupled to the device to determine the voltage generated thereby. The voltage and the reference voltage are compared in the comparator which generates a control signal proportional to a difference therebetween which is coupled to control the current source.