Incandescent lamp power saving circuit

The switch S in the picture can be a wall-connected four-way switch
, and the incandescent lamp can be a 100W one. When the switch Sl is closed, it is equivalent to a 4VF capacitor
connected in series in the 100W incandescent lamp circuit , which can emit 15W light after the voltage is reduced. When S2 is closed, the capacitor Ci and C2 are connected in parallel to 5pF. At this time, the power of the incandescent lamp is about 30W. When S3 is on the stage, capacitor c3 is connected in parallel with C, and G. At this time, the capacitor capacity is 6pF and the incandescent lamp power is about 40W. When the S4 is on the table, the circuit is connected through and the incandescent lamp power is ioow. Of course, you can install single-speed, double-speed, or three-speed switch adjustment circuits according to the specific conditions and needs of your own family. Here is the four-speed key switch circuit , and the capacitance data that incandescent lamps at all levels of power should be connected in series .