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MY EXPERIENCE IN AUTONOMOUS ROBOTICS | |
Motor Drving
Circuit(H bridge) H bridge Basics H bridge Ciruit H bridge Circuit continued H bridge for high voltages H bridge links H bridge IC-L293d Troubleshooting L293D
L298
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In this circuit you can see two relay driving circuitary. This circuit has a limitation of relay contacts in default position. In default position it should be connected to ground, so that when I1=I2=0 motor get's zero. I assumed the motor will be DC motor of high ratings. This circuitary can be applied to small 12V DC motor, but the main problem coming is about the switching speed of the relay. It is around 10ms at maximum. So the circuit won't switch fastly compared to H-bridge using transistor or mosfets. This is one of the limitation of this circuit, second limitation is that when connecting the default position would be gnd for both relays.
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