DIY Practical Soldering Practice Kit Practice Learning Electronics Training Board

How it works When the battery is installed, the vibration switch S1 is disconnected, so the circuit does not work. When the gyro is rotated, due to the centrifugal force, the vibration switch S1 is turned on, and the circuit works. The working principle of the multivibrator circuit is that when the power is turned on, the two transistors Q1 and Q2 will compete to be turned on first, but due to the difference of components, only one of the transistors will be turned on first. Then the two triodes in the circuit will take turns and cut off, and the two light-emitting diodes will continue to circulate and emit light. When the top is rotated, the bright LED will appear a straight line effect. Since the lights are staggered and every two lights are alternately lit, there will be multiple dotted patterns.

• Function introduction: When the top is rotated, the vibration switch is turned on due to the centrifugal force, and the light-emitting diode emits light. Due to the persistence of vision in the human eye, it seems that the LED emits a segment of linear light effect.