Discrete component motor direction controller


Posted on Mar 6, 2013

This circuit can control a small DC motor, like the one in a tape recorder. When both the points A & B are `HIGH` Q1 and Q2 are in saturation. Hence the bases of Q3 to Q6 are grounded. Hence Q3,Q5 are OFF and Q4,Q6 are ON . The voltages at both the motor terminals is the same and hence the motor is OFF. Similarly when both A and B are `LOW` the motor is OFF.


Discrete component motor direction controller
Click here to download the full size of the above Circuit.

When A is HIGH and B is LOW, Q1 saturates ,Q2 is OFF. The bases of Q3 and Q4 are grounded and that of Q4 and Q5 are HIGH. Hence Q4 and Q5 conduct making the right terminal of the motor more positive than the left and the motor is ON. When A is LOW and B i




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Battery Charger Circuit
    Electronic Doorbell Circuit
    mixer translates multiple standards
    thrifty voltage regulator
    Telephone Free Indicator
    Electromagnetic Field Probe with Meter
    Fuse Saver
    PIC12F629 based IR decoder
    Vibrato circuit
    Multifunctional motor protection circuit



    Top