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. 24, 1991
Filed:
Oct. 02, 1990
Gerald L Smith, Torrance, CA (US);
Teledyne Inet, Torrance, CA (US);
Abstract
A simplified driver circuit for solid-state switches, comprising a main drive circuit and an adaptor circuit. The main drive circuit is powered only by the normal switch control signal input and by an external, regulated power supply commonly used by the equipment controls. No individual power supplies are used for the driver. The main circuit incorporates precise circuits for shaping and directing the input control signals, exceptionally high voltage isolation to avoid transmission of harmful noise and a circuit for delivering the required gate drive to a field-effect-transistor switch. The adaptor circuit connects to the output terminals of the main circuit, and modifies the drive signal to that required for a bi-polar transistor or a silicon controlled rectifier. The invention circuit is characterized by its use of few precise components, its high noise isolation and low power dissipation.