FIELD: electricity.
SUBSTANCE: transformerless DC power supply source comprises two parallel connected half-wave circuits from serially connected diode and accumulating capacitor, operating in turns from positive and negative half-periods of AC network voltage, accumulating capacitors in which are connected with one pole of the filter capacitor via separating diodes, and with the other pole - via thyristors, control electrodes of which are connected to phase and zero conductors of the network, to which half-wave circuits are also connected via stabilitrons of alternate start-up of thyristors. An overvoltage protection stabilitron is connected in parallel to the low pass filter capacitor. Design simplification is related to exclusion of a step-down transformer from the low-voltage DC power supply source connected to the AC network. Accounting of power carried out with the help of an electric counter of active power will only show around 20% from the actually consumed power in the proposed circuit, since the latter is a complex load for an AC circuit with a dominant portion of a reactive component of a capacitance power.
EFFECT: design simplification and substantial reduction of an active component of consumed power.
2 dwg
