Capacitor step-down indicator light circuit

The capacitor step-down indicator light
    uses a capacitor to step down the voltage , which not only has minimal capacitor loss, but also improves the power factor and has a significant power-saving effect. Its circuit
is shown in the figure. The series capacitance can be calculated according to the following formula:
    C= -L=(F)
    314/can [Ul
in the formula Ie - rated current of the indicator light, A;
    U. ——Rated voltage of indicator light , V;
    U-power supply voltage, V.