| 摘要 |
1. Combination mains unit in a television equipment for the energy supply of the horizontal deflection circuit with a storage inductance (11), the coil of which is connected to a source of direct current and the stored energy of is transferred into a capacitor (19) by means of an electronic switching element (12), the switching times of which are controlled in dependence on the operating voltage and/or the active loading by the connected equipment circuits in dependence on a voltage taken off from the output of the combination mains unit or of the horizontal deflection circuit in such a manner that the output voltage (UB2 ) is constant, wherein the coil (11) displays at least one tap (A, B, C), from which an operating voltage can be taken off, characterised thereby, that the tap (A) of the coil or several provided taps (B, C) are connected through a respective decoupling capacitor (20a, b, c) with a voltage doubler circuit of a clamping diode (21a, b, c) connected to ground and a rectifying diode (22a, b, c) connected to a charging capacitor (23a, b, c), from which different voltages can be taken off. |
