A new type of dimming SM9043 integrated circuit

Touch-type garden lamp circuit designed by M9403. The circuit operation is as follows:
VDi. VD4 and cJ form a simple circuit to reduce rJ and stabilize JI. The output 9V direct current is connected to the integrated
circuit. The ground for the Chinese war block obtained the S flow iii twenty signal . R, the complementary sweep resistor of the IC, c1 is the
isolation safety capacitor , M is the touch electrode, when the human hand touches M, the miscellaneous signal induced by the human body is sent to the integrated circuit (4) pin through C3, R8,
R7 , after internal processing by the integrated circuit SM9403, the trigger signal output by pin (6) is added to the thyristor
control electrode through CI and R1 , causing the thyristor to conduct and the desk lamp lights up. When you touch M for the first time, you can change the arrival time of the leading edge of the output trigger pulse of pin (6), thus causing the brightness of the lamp to change. If you touch it repeatedly, the brightness of the bulb will change in cycles of weak light, medium light, strong light, off, low light... . Increasing or decreasing the value of the discharge resistor and capacitor can change the brightness difference of each gear. This circuit has four gears, namely three on and one off.