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:
Apr. 29, 2025
Filed:
Jan. 29, 2023
Powertech Industrial Co., Ltd., New Taipei, TW;
Chih-Yun Lin, New Taipei, TW;
Chih-Hsing Chen, New Taipei, TW;
POWERTECH INDUSTRIAL CO., LTD., New Taipei, TW;
Abstract
A surge protecting circuit is provided. A first stage filter circuit is connected to an alternating current (AC) source. A surge detection driver circuit is connected to a first stage filter circuit. A first snubber circuit is connected to the AC source. A first terminal of a first power switch is connected to the first snubber circuit. A control terminal of the first power switch is connected to the surge detection driver circuit. A first terminal of a second power switch is connected to a second snubber circuit. A second terminal of the second power switch is connected to an output terminal of the surge protecting circuit. A control terminal of the second power switch is connected to the surge detection driver circuit. A multi-stage filter circuit is connected to a second terminal of the first power switch and the second snubber circuit.