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:
Sep. 27, 1988
Filed:
May. 29, 1987
Syed M Ahmed, Borough of Flemington, NJ (US);
GE Company, Fairfield, CT (US);
Abstract
A zener diode is connected at one end via a first impedance to a first power terminal. The base-to-emitter junctions of first and second transistors are connected in parallel between the other end of the zener diode and a second power terminal. The collector of the first transistor is connected to the one end of the zener diode to regulate the zener current and hence the zener voltage. A third transistor is coupled at its base to the one end of the zener and its emitter is connected to an output terminal to produce an output voltage which is a function of the zener voltage. The collector of the second transistor is connected to the emitter of the third transistor to pass a current through the third transistor which is approximately equal to the current through the first and second transistors whereby the base-to emitter junction of the third transistor and its temperature variations have little, if any, effect on the output voltage.