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...
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...
DIY taxiplane:
Advantages:
Good exercise of children's hands-on and brain-building ability, cultivate children's interest in scientific physics experiments, and improve their creative ability. More...
Transmitter course courseware The principle of radio receiving and transmitting is that the transmitter sends out current of different frequency and wavelength according to the requirements of...
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...