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:
Dec. 25, 1979
Filed:
Oct. 02, 1978
Paul S Rumbaugh, Garden Grove, CA (US);
Altec Corporation, Anaheim, CA (US);
Abstract
A transistor amplifier circuit is arranged in a differential amplifier incorporated into a power amplifier output circuit having approximately unity voltage gain and capable of feeding high current and power outputs to a load in response to high level voltage inputs from a signal source. This same signal source may be connected to drive a plurality of different output circuits simultaneously. A decoupling diode is provided in series with the emitter of each of the transistors of the differential amplifier, these diodes having a reverse breakdown voltage which is of the order of twice the peak input voltage and the supply voltage such that in the event that a short should appear in the load or in the power amplifier being driven, the diodes will act to effectively decouple the output of the signal source from the short circuit, thereby preventing the signal source output from being loaded down and, as a result, distorted.