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:
Nov. 10, 1987
Filed:
Sep. 10, 1985
Applicant:
Inventor:
Anton M Bax, Forthampton, GB;
Assignee:
Smiths Industries Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
307257 ; 307592 ; 307570 ;
Abstract
An a.c. switch has two pairs of diodes each of which has two diodes connected in back-to-back relationship between the signal input and output of the switch. The two pairs of diodes are connected in parallel with each other in opposite senses. A MOSFET transistor is connected between the junctions of the two diodes in each pair. A switching control unit controls switching of the transistor such that, when the transistor is conducting, signal current flows between the input and output via one diode in one pair, the transistor, and one diode in the other pair. When the transistor is not conducting, current flow between the input and output is blocked.