Bidirectional motor control using L293 driver


Posted on Feb 7, 2014

The L293 is designed to provide bidirectional drive currents of up to 1 A at voltages from 4. 5 V to 36 V. The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4. 5 V to 36 V. Each output is a complete totem-pole drive circuit, with a Darlington transistor sink and a pseudo-Darlington source. Drivers are ena


Bidirectional motor control using L293 driver
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bled in pairs, with drivers 1 and 2 enabled by 1, 2EN and drivers 3 and 4 enabled by 3, 4EN. When an enable input is high, the associated drivers are enabled and their outputs are active and in phase with their inputs. When the enable input is low, those drivers are disabled and their outputs are off and in the high-impedance state. With the proper data inputs, each pair of drivers forms a full-H (or bridge) reversible drive suitable for solenoid or motor applications. In this bidirectional stepper motor controller electronic project VCC1 is logic supply and must me between 4. 5 and 7 volts ( typically 5 volt) and VCC2 is the power supply for the motor and must be from VCC1 up to 36 volts




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