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:
Feb. 26, 2002
Filed:
Nov. 09, 2000
Radu Rapeanu, Montreal, CA;
Thomas & Betts International, Inc., Sparks, NV (US);
Abstract
The present invention provides a self-supplied DC/DC switching power supply circuit for emergency notification and similar applications. The circuit includes a control circuit in electrical communication with an igniter circuit. The igniter circuit provides a temporary activation voltage to the control circuit for activation thereof. The igniter circuit provides the activation voltage for a limited time duration sufficient for enablement of the switching power supply circuit after which time power is supplied to such control circuit by the output voltage. The present invention SPS circuit can use a single-cell battery pile or other low-voltage source as low as 0.3V DC while realizing improved efficiency over a wide range of input voltages.