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. 06, 1983
Filed:
Aug. 27, 1981
Applicant:
Inventor:
John P Phipps, Phoenix, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
250551 ; 307311 ;
Abstract
An improved solid state relay and regulator having reduced turn-off time, analog or digital input, and analog or digital output, is obtained by using a depletion JFET as a variable resistance discharge path for a gate of a power MOSFET switching device wherein the gate is charged by a first set of photovoltaic cells optically coupled to but electrically isolated from an LED input. A second set of photovoltaic cells responsive to the same or a separate LED input hold the JFET in an Off state while the MOSFET gate is energized. Variable output and AND logic are obtained.