| 摘要 |
The electronic three-point starter, which is constructed using the strip-mounted system is connected by means of its input to a radio-frequency filter capacitor as well as to a capacitor (which is connected in series with the primary winding of a high-voltage pulse transformer), a resistor and a rectifier diode. The output is formed by the secondary winding of the pulse transformer, while a semiconductor switch (which connects the capacitor to the primary winding of the pulse transformer) is connected in parallel with a series element which consists of the resistor and the diode. The starter according to the invention can be characterised in that the semiconductor switch is a SIDAC (bidirectional diode thyristor) which is connected to a second diode, whose polarity is opposite to that of the first diode, and thus bridges the series element which consists of the resistor and the diode. |
