| 摘要 |
<p>The supply unit is designed to supply a first high voltage and a second low voltage. The source for the first voltage includes a first capacitor(C1;C2) which receives a voltage from a rectifier. The first capacitor is connected in series with a DC low voltage source including in parallel: - a first diode(Da) in series with a second capacitor(Ca), - a rectifier(D) of opposite polarity to that of the first diode, and, - a voltage limiter(12) of the feedback type, the terminals(B,G) of the DC low voltage source correspond to the terminals of the second capacitor. The voltage limiter consists of a thyristor(Th) whose trigger and anode are connected by a Zener diode(Z). The unit also uses a current limiter(R) in series with the voltages sources.</p> |
