Working principle of welding pendulum wind chime

The working principle of the swinging wind chime is as follows.

1, consisting of Q 1, Q2, etc. , to control the alternating flashing of two groups of LED lights. The wind chime shape trained by 95 LED rows has the following principles. Because the parameters of components cannot be completely consistent, one of Q 1 and Q2 will always be turned on first when starting.

2. Assuming that the Q 1 line is on, the collector voltage of Q 1 drops to 0V, and the group A LED emits light at this time; Because the voltage across the capacitor can't change suddenly, the 0V voltage of Q 1 collector reduces the base of Q2 to 0V through C 1, and Q2 turns off. At this time, the group B LED does not emit light. With the increase of C 1 charging voltage, when it rises to the conduction voltage of Q2, Q2 turns on, and the collector voltage of Q2 drops to 0V. At this time, the group B LED lights emit light.

3. Similarly, the voltage of 0V at the collector of Q2 passes through C2, so that the base potential of Q 1 drops to 0V, and Q 1 turns off. At this time, group a LED does not emit light. Then C2 charging begins to repeat the above process, so that the two groups of LEDs emit light alternately and continuously.