Make a dream lamp with CD4069

In the figure, diodes VDI~VD4 form a bridge rectifier, which converts 220V AC power into full-wave pulsating DC power. One channel supplies power for
red, green, and blue (i.e., HI~H3) lanterns . The other channel is then stepped down by Rl0, stabilized by VD5 and VD6 isolation and capacitor C7
filtering supply power to CD4069 integrated circuit A. Each of the six inverters in
    CD4069 (such as inverters I and II) forms an ultra-low frequency oscillator ,
forming three oscillators. Their oscillation frequency is about 1 to 2 Hz. When oscillating When the device starts to vibrate, its output terminal outputs a positive square
wave pulse, and the corresponding transistors VTI~VT3 are turned on through the resistors R4-R6. When the transistors are turned on, their
corresponding thyristors (VSI~VS3) are turned on. When it is turned on, the corresponding colorful lights (H1-H3) will light up. After the pulse, the transistor will be cut off
, the thyristor will be turned off, and the lights will go out. The colored lights will flash and light up with the oscillator frequency. The values ​​of the resistance and capacitance components of the three oscillators in the circuit
are exactly the same, but due to the discrete nature of the component parameters, their parameters are always more or less different, so the square waves generated by
the oscillators are different in frequency and phase. There are slight differences, and which bulbs are illuminated at the same time is completely random. For example,
during production, the light emitted by three light bulbs is projected onto the same translucent frosted glass or opal glass lampshade. What we see
will be the mixed light emitted by the three colored lamps . According to the principle of three primary colors, its colors vary widely and are very special. nice.