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:
Mar. 14, 1995
Filed:
Mar. 18, 1993
Shozo Nitta, Kita, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A bias current supplying circuit having: a differential amplifier for amplifying a difference between potentials at first and second nodes and outputting the amplified difference voltage from a third node, the first node being connected to an output terminal of a bias voltage source for outputting a bias voltage, and the second node being connected to an output terminal from which a bias current is supplied to an external circuit; a negative feedback loop circuit for changing the potential at the second node in accordance with the potential at the third node of the differential amplifier; and a potential dropping circuit connected to the second node for dropping the potential at the second node in response to an external input of a control signal and intercepting a supply of the bias current to the external circuit.