The "BEAM Stepper" drive circuit


Posted on Jan 21, 2013

The 74AC240 stepper driver works by alternately enabling each half of the buffer. Only one half can be enabled at a time. Let`s assume that the top half of the driver is enabled. U1A & U1B along with R8, C1, and the input protection resistor R7 form a square wave oscillator. The outputs of U1A & U1B directly drive one coil of a bipolar stepper motor.


The
Click here to download the full size of the above Circuit.

The "BEAM Stepper" drive circuit A Duane C Johnson / Wilf Rigter joint effort Duane Johnson and Wilf Rigter came up with this interesting 74AC240-based circuit to drive small bipolar stepper motors (e.g., the ones in floppy drives): The 7




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Tape recorder interface
Simple-power-supply
Telephone Visual Ring Indicator
network wiring diagram
Moduler PreamplifierCircuit
Astable Multivibrator
Infrared remote control a dimming circuit
Voltage feedback closed loop speed control system



Top