Stabilisation circuit

摘要

A stabilisation circuit for a half-wave voltage rectified from the AC mains voltage operates with a series semiconductor element between a capacitor (6) and a rectifier (4) and with a reference voltage element (8) on the control pole (5) of the series semiconductor element. So that the power loss decreasing [lacuna] series semiconductor element is kept small, for the purpose of saving heat sinks, the series semiconductor element is an electronic switch, in particular a thyristor (12) or triac, which switches through in the case of every half-wave when the half-wave voltage reaches a value which is greater than the voltage reached across the charging capacitor (6), and which blocks when the half-wave voltage approaches zero. Current limiting (13) is provided for the current flowing to the charging capacitor (6). <IMAGE>