FILTER PULSE-switching overvoltage in DC network

摘要

The proposed utility model relates to electrical engineering, and in particular, to devices for protecting electronic equipment against various impacts surge in the DC power supply for switching power equipment. Filter pulsed switching surges comprises series connected choke and a protective diode, the output of which is connected with a plus and a load capacitor, the second input capacitor and the load connected to the first power input of the transistor switch. The apparatus is characterized in that it introduced radio interference suppression filter, a driver, a current measuring device and connected in parallel to power transistor inputs varistor. The second power input transistor switch connected to the second output of the current control device whose input is connected to the second output RFI filter and to the second input of the control unit. The first control unit input is connected to the first output RFI filter and the inlet throttle, the control unit output is connected to the first driver input, a second input coupled to the first output of the current control device. driver output is connected to a control input of the transistor switch, and the interference filter are connected to inputs of the power supply terminals of the DC. The developed filter pulsed switching surges in a dc network allows to extend its application field and has a high reliability. 1 Fig.