establishment prinzipbedingte losses without discharge switch of the verlustleistungsbeanspruchung stromdurchflossener pabx switching off

摘要

The low-loss device is intended for the relief of electric or electronic one-way switches during switching-off. Between the four switch connecting points is incorporated an electric relief circuit which is formed by an output and an input choke, two diodes, two thyristors and a transverse current diode. The circuit contains also four capacitors, two of which serve as an input and an output auxiliary capacitor. The cathode of the input diode is connected to the circuit supply electrode which is directly coupled to the one-way switch input electrode. The anode of the output diode is connected to the circuit output electrode which is directly connected to the switch output electrode. The input and output electrode of the switch are electrically separated by diodes, when the switch is in conductive mode.