单极性步进电机控制器电路--Unipolar Stepper Motor Controller

This is a very good integrated circuit. There is no need for any external glue logic to drive the circuit, there is border=0>

The resistors R1 & R2 are height=343 src="/data/attachment/portal/201007/ET33166201007230144131.jpg" width=553 border=0>

Features of the chip:

1.5A Maximum Output Current
35 V Output Sustaining voltage
Wave-Drive, Two-Phase, and Half Step Formats
Internal Clamp Diodes
Output enable control
Power on reset
Internal Thermal Shutdown
Sequence                   Connections
Two-Phase Drive Sequence   Pin 9 GND  Pin 10 GND   (Simplest choice)
Wave Drive Sequence        Pin 9 5v   Pin 10 GND
Half Step Drive Sequence   Pin 9 GND  Pin 10 5V

This driver will allow you to scale up your project considerably as the power will be much greater with the bigger motors and higher voltages and currents. The draw back is that the engineering that goes along with them will also have to be more substantial. The larger stepper motors are very heavy for desktop models but will be very versatile for the larger experiment.

Commercial Kit and Data Sheets
An excellent, high quality kit (Nos:109) to experiment with this driver can be purchased from 
 

Wiltronics Research PTY LTD
5-7 Ripon St (North)
Ballarat 3350
AUSTRALIA
Phone (03)5331 1947 
 

It provides a 5 volt regulated supply, indicator LEDs, 555 oscillator for pulses and miniature switches to control direction and stepping modes. Single step or free funning can be chosen as well full data sheets provided. They also provide data sheets with the circuit. Contact them for prices. While not the cheapest way to go it is the best seen so far.

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