Three-way flashing light string circuit (5)

A j-channel flashing light string controller made using Suning integrated circuit . The lighting changes of the light string are random, unpredictable and very interesting.     In Guzhong, VDI-V1)4 form a bridge rectifier, converting 2pov AC power into full-duration pulsating DC power. One leg supplies power to the two-way colorful light strings FI, E2, and F3, and the other... Isolated with VD5 and filtered by capacitor C, it supplies power to the CD4069 digital integrated circuit.     Each of the six inverters in CD4069 (such as inverters l and n) form an ultra-low frequency oscillator , which constitutes j oscillators . Their oscillation frequency is about 1-2Hz. When the oscillator When it starts oscillating, its output terminal outputs a positive square pulse through the resistor R. -R; makes the corresponding triode VT1 ~ VT3 gap conductive. When the diode conducts, its corresponding thyristor (VT4-VT6) will be turned on, and the corresponding Caican (1bu:1 -E3) will light up. After the pulse , the diode is cut off, the pin ah tube is turned off, and the disillusionment is lost. So the light string will flash and light up with the oscillator frequency. The values ​​of the resistance and capacitance components of the == oscillators in the electric hoof are exactly the same, but due to the discrete nature of the component parameters, their parameters are more or less different, so the square wave generated by the oscillator varies in frequency and phase. They all have tiny differences, and which string of light bulbs lights up at the same time is completely random. When making, you only need to arrange a string of small electric beads alternately, and you can see the small electric beads twinkling like stars in the sky. The period of their luminescence is random and unpredictable, which is very beautiful and interesting.