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:
Aug. 30, 1983
Filed:
Sep. 29, 1980
Susumu Tanaka, Tokyo, JP;
Sansui Electric Co., Ltd., Tokyo, JP;
Abstract
A bias circuit for use in the single-ended push-pull circuit has NPN and PNP transistors whose emitters are connected to each other and whose collectors provide a bias voltage, diodes and resistance elements. On the operating side, the diode gives a reference voltage and the resistance element detects the voltage corresponding to the increase of the output voltage exceeding the reference voltage. Simultaneously, on the unoperating side, the diode decreases the voltage between its both terminals. Thus the bias voltage is made larger, by positive feedback operation on the operating side and by negative feedback operation on the unoperating side, enough to prevent output power transistor on the unoperating side from being cut off.