Light touch field effect tube stepless dimmer

Capacitors C2, C3, diodes VD2, VD3, etc. form a simple capacitor step-down half-wave rectifier stabilized power supply, which supplies
power to the entire control circuit. This power supply is controlled on and off by switch S? It can be an ordinary small toggle switch, or it can be a touch button switch
hidden on the desk lamp panel . Normally, when switch S is turned on, the desk lamp does not light up. When you need to turn on the light, just put a small doll on it. Above, the pressure contact of the switch is closed, and the circuit is energized. SI and S2 are touch button switches used for brightening and dimming respectively , and LED is the circuit working indicator light.