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:
May. 12, 1981
Filed:
Jan. 15, 1979
IBM Corporation, Armonk, NY (US);
Abstract
A recharging circuit is provided to maintain a high potential for a longer time interval at the output node of a FET driver circuit. The recharging circuit consists of a first FET which is made periodically conductive via a capacitor and periodically recharges a capacitance at the output node. This capacitance is first charged by a strong pulse of the driver circuit. A second FET is provided to prevent a current flow through the first FET and thus the generation of a power dissipating current when the output potential of the driver circuit is low. The gate of the second FET is connected to a supply voltage. Thus, the second FET is conductive when a low potential exists at the output node, transferring that potential to the gate of the first FET which, in turn, does not become conductive since its gate to source voltage is less than its threshold voltage.