Patent ID: 8587909
Filing Date: 2013-11-19
Classification: H02H

Abstract:
1. A transient current suppression device, which is applied to a fan, comprising: a filtering circuit outputting a first voltage signal and a first current signal according to a first power signal; a delayed turn-on circuit electrically connected with the filtering circuit, wherein the delayed turn-on circuit provides a first discharging path for the first current signal according to a second power signal after a delayed time and outputs a second current signal; and a forcibly electrical discharging circuit electrically connected with the delayed turn-on circuit and the filtering circuit, wherein the forcibly electrical discharging circuit comprises a capacitor and a transistor, and one end of the capacitor is electrically connected with the gate of the transistor, and the other end of the capacitor is electrically connected with the filtering circuit, wherein the capacitor of the forcibly electrical discharging circuit is charged according to the first voltage signal outputted from the filtering circuit and the capacitor of the forcibly electrical discharging circuit is in short circuit, and the transistor of the forcibly electrical discharging circuit is turned on by the first voltage signal to form a second discharging path.