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:
Apr. 27, 1976
Filed:
Feb. 06, 1974
Kouichi Sekiguchi, Asaka, JA;
Abstract
An AC wave switching circuit in which the collector-emitter path of a switching transistor is inserted in series in the circuit loop of an AC signal to be switched. A control voltage source capable of flowing a DC current greater than a peak value of the AC signal current is connected across the base-emitter path of the switching transistor, so that the switching of the AC signal is performed by the voltage of the control voltage source without flowing any DC current in the collector-emitter path of the transistor. The collector-emitter path of another switching transistor may be connected in series or in parallel with the collector-emitter path of the first-mentioned switching transistor. At least one of a diode and a resistor may be included in the base-emitter path circuit of each switching transistor. The circuit loop may provide an output by transformer coupling or the capacitor coupling.