| 摘要 |
FIELD: electricity. ^ SUBSTANCE: diagram of a cost-effective lamp includes a light diode matrix from a group of light diodes comprising two identical circuits connected to an AC network. Each circuit comprises several serially connected light diode, which are connected in parallel to an electrolytic capacitor and an overvoltage protection stabilitron, an accumulating capacitor charged from the AC network via a diode and connected to the electrolytic capacitor via a thyristor, in the control branch of which there is a start-up stabilitron connected in series to a charging circuit from a diode and an accumulating capacitor of the opposite circuit, at the same time a squared voltage on the electrolytic capacitor of each circuit supplying to the appropriate group of light diodes, relates to the squared amplitude voltage, to which the accumulating capacitor is charged within a quarter of a period of the grid AC voltage as capacitances of the accumulating and electrolytic capacitors relate, and poles of each specified circuit are connected accordingly to the phase and zero conductors of the AC network. ^ EFFECT: simplified design and reduced active component of power consumption. ^ 1 dwg |
