| 摘要 |
For the deparasiting of circuits for regulating the voltage and operating according to the phase breakdown principle, there is included a coil in series with the semiconductor regulating element (T). The circuit comprised by the semiconductor element (T) and the deparasiting coil (Dr 1) is arranged in the path of the load and is shunted by a capacitor (C) which also acts as a deparasiting element. The capacitor (C) has indesirable effects when the control circuit which influences the firing time of the semiconductor switch must be remotely controlled. Further, at the beginning of a transmitter, a relatively high frequency voltage, for which the capacitor represents a low impendence and a high load, is superposed to the power supply voltage. By adding a second coil in the load circuit, the resistance for high frequencies is increased, thereby decreasing the load of the transmitter. The use of a ferrite core for the additional coil allows to obtain a relatively important inductance with reduced sizes. |
