Parameters:
1>. Power supply voltage: DC3-12V
2>. PCB size: length 13.5CM* width 2.2CM
3. Features:
1>. It is simple and practical, and the power consumption is small, and the circuit is driven by an integrated circuit. The parts are few, and the line is simple and clear.
2>. In the process of debugging, the understanding of the principle of the circuit will be deepened.