If you want to drive your motor at 12V, apply 12V on this pin. Apply +ve voltage to it as per motor rating. This pin can also be used to control speed of the motor using PWM technique. The concept is simple, if you want to use a particular H bridge you have to give a high logic to corresponding enable pins along with the power supply to the IC. 9 is used to enable H-bridge driver 3and 4.(H bridge on right side). 1 is used to enable Half-H driver 1 and 2.( H bridge on Left side). The description of each pin is as follows: Here we prefer L293D as a rating of 600mA is good for driving small DC motors and protection diodes are included in the IC itself. L298 pin configuration Main difference between L293D and L298 CharacteristicĬontinuous max.
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