The circuit shown has the advantage over the reductions with resistors to have a much higher performance, with less losses and lower energy costs. The values in parentheses are for the 220 V network. The C1 capacitor must be made of polyester with a working voltage of at least 200 V if the network is 110 V and at least 400 V if the network is 220 V. circuit can power up to more than 20 LEDs. Experiments can be done with more LEDs, changing the value of C1. Likewise, this component can be increased to supply high-brightness LEDs that operate with higher currents. A multimeter in series with a sequence of LEDs can be used to measure its current and thus allow testing of the capacitor.
