Hand power generation: Size 8 * 10 * 11 Rotating the mechanical arm, through the belt pulley, big wheel with small wheel, small wheel with big wheel, do more power to generate current. Working...
Experimental principle: This is a typical switch circuit. The battery provides power. The switch controls the on/off of the current. When the switch is turned on, the switch current flows...
It is composed of tank, carriage, battery, driving belt, pulley, driving mechanism.
After the power is turned on, the power wheels on both sides of the deceleration motor output power and drive the...