The positive wire from the 9v battery will connect to both of the no top inputs. The switch s1 and s2 control the relay 1 and relay 2 respectively.
Bridge Relay Circuit Diagram Electrical Projects
Bidirectional motor control using relay. The trasnsitor based h bridge can control the motor speed using the pwm technic which is nothing more than a fast flickering of the transistors. In the circuit diagram shown the switch s1 is on and switch s2 is off. Make the connections according to it. The circuit operation is straight forward. This is a simple and easy to construct circuit that can be used to provide a bidirectional drive to a dc motor. This sends a pulse to the latching relay to reverse the motor and ends the short pulse.
Output of an astable mutivibrator based on ic1 ne555 is used to control the relay rl1 driving the motor. The backbenchers diy 3947 views. Circuit diagram of this bidirectional motor control project is shown in image below. The motor is connected between the two poles of the relay contacts. The following circuit allows a motor such as a train to travel in the forward direction until it hits the up limit switch. So the motor terminals will have a positive polarity on the left side and a negative polarity at the right side.
In this project both wires from the motor will connect to both of the com middle inputs of the relay switches. Connect normally open terminal of both relay to drain terminal of mosfet. How to make dc motor forward reverse control using relay diy project the backbenchers diy duration. It operates on 12 volts and the ba158 diode protects the transistor against the return currents that can occur when the coil is depolarized. The negative wire from the 9v battery will connect to both of the nc bottom inputs. Connect normally closed terminal of both relays to positive terminal of battery.
The coil terminals of the relay are connected to the supply with a push switch. The relay which switches the two circuits is controlled by a 2n2222 npn transistor which is activated or deactivated by one of the digital outputs from the arduino board. A circuit which allows a connected motor to operate in clockwise and anticlockwise directions through alternate input triggers is called a bidirectional controller circuit. This input is perceived by the motor as an intermediate voltage and not as a stream of onoff voltage. The train travels to the down limit switch and reverses.
Gallery of Bidirectional Motor Control Using Relay
