Free Simple Circuit Diagram
To get a position control that are low cost, accurate and simple we can use stepper motor. To drive it we can use a circuit mounted close to the motor, and to control it we can use remote control circuit via long cable. The power for both motor and the driver circuit is carried over two wires the same wires […]
Read more
To make a constant speed motor control we can use Closed loop (servo) control. Constant speed motor is a motor that has constant speed although the load is change, indeed when the electric supply voltage is also changed. This circuit uses tachometer to sense the actual speed to maintain the speed at a constant value. If the speed is slowing […]
Read more
In some industries, to control the some equipments they are use computer-controlled 4-20mA current loop. This current loop is used transmit a signal over a long distance wires. With current loop, the signal will be resistant from noise interference. To operate this computer-controlled 4 – 20mA we need a single power supply with a range of 3.3 to 30V. On […]
Read more
A controller for keeping the water level stays between upper and lower limits is described here. This water level controller is actually a water pump controller that turn the pump on or off based on the detected water level. This water level controller has two modes: fill and empty. Here is the schematic diagram of the circuit: For the empty […]
Read more