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:
Jan. 12, 1988
Filed:
Jan. 21, 1987
Akira Denda, Tokyo, JP;
NEC Corportion, Tokyo, JP;
Abstract
For improvement in switching speed, there is provided a Schmit trigger circuit comprising a high-voltage supply line, a low-voltage supply line, a series combination of a bipolar transistor and a resistor provided between the high-voltage supply line and the low-voltage supply line, the bipolar transistor having a base node connected to an input terminal, an intermediate node provided between the bipolar transistor and the resistor, a logic gate having an output node and two input nodes connected to the input terminal and the intermediate node, respectively, and a field effect transistor operative to establish or block a current path between the intermediate node and one of the high-voltage supply line and the low-voltage supply line, the field effect transistor having a gate node connected to the output node of the logic gate.