DC Motor-Driver H-Bridge Circuit

  
A very popular circuit for driving DC motors (ordinary or gearhead) is called an H-bridge. It`s called that because it looks like the capital letter `H` on classic schematics. The great ability of an H-bridge circuit is that the motor can be driven forward or backward at any speed, optionally using a completely independent power source.
DC Motor-Driver H-Bridge Circuit - schematic




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