DC Motor Direction Controller

11,908

For controlling a small DC motor, such as the one found in a tape recorder, Q1 and Q2 are in saturation when both points A and B are HIGH. Component: ..

To control a small DC motor effectively, a circuit utilizing transistors Q1 and Q2 is employed. In this configuration, Q1 and Q2 serve as switches that regulate the flow of current to the motor based on the logic levels applied to points A and B. When both points A and B are set to a HIGH state, both transistors enter saturation, allowing maximum current to flow through the motor.

The circuit typically includes additional components such as resistors to limit the base current to the transistors, ensuring they operate within their safe limits. A diode may also be included in parallel with the motor to provide flyback protection, preventing voltage spikes generated when the motor is turned off from damaging the transistors.

The power supply for the motor should be selected based on the motor's voltage rating to ensure proper operation. The design may also incorporate feedback mechanisms, such as a rotary encoder, to monitor the motor's position or speed, allowing for more precise control.

This arrangement is widely used in various applications where small DC motors are required, including robotics, automation systems, and consumer electronics, due to its simplicity and effectiveness in controlling motor operation.For control a small DC motor, like the one in a tape recorder. Q1 and Q2 are in saturation when both the points A & B are `HIGH`. Component: .. 🔗 External reference

DC Motor Direction Controller

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