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:
Jan. 20, 1987
Filed:
Jul. 18, 1984
Josef Sochor, Dieburg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
By varying the supply voltage, the output current is adjusted. The push-pull amplifier comprises two branches I, II, each having at least one transistor of the identical conductivity type, the emitters of which are connected with one another and, via a resistor (38, 118), with one pole of the supply voltage source, and the collectors of which are connected with the end terminals (34, 35; 107, 108) of a transformer coil, and one biasing circuit comprising two resistors in a series circuit, the junction points (J1, J2) of which are connected to the bases of the transistors. The common emitter current is varied virtually exclusively by means of varying the supply voltage, and upon a variation of the supply voltage, the sum of the currents in the two resistor networks are substantially independent of the supply voltage established.