|
|
Computer | Electronic circuits |
|---|
Electronic circuits -> Computer
UNIPOLAR STEPPER MOTOR CONTROL CIRCUIT. This circuit controls a small, four-phase, five-wire, unipolar stepper motor, commonly designated the "KP4M4-001." This type of motor was used in many 5 1/4" floppy disk drives in older computers. Now obsolete, such disk drives are often available on the surplus market for a small fraction of the motor's original cost. The stepper motors are easy to extract from the drives, and are ideal for many applications. This arrangement was used in the scale model of a RADAR set to control the position of a miniature parabolic antenna. (Note that some 5 1/4" floppy disk drives used a four-wire "bipolar" motor, which is not compatible with this circuit.)
| Upgrade cga/ega monitors to vga/svga
| USB to RS232 Dongle
| Use disk drive motors in our projects
| Users' Manual printers Seiko EPSON in PDF and MS Word formats: EPL-5700, DFX-8500, FX-2180, FX - 880 \ FX - 1180, Stylus PHOTO 700, Stylus PHOTO EX, Stylus COLOR 850, Stylus COLOR 850 (in Russian), DFX - 8000, EPL - 3000, EPL - 5000, EPL - 9000, LQ - 570, LX - 300, Stylus 1000, Stylus - 800, Stylus COLOR, Stylus COLOR 400, Stylus COLOR 600, Stylus COLOR 800, TM - 290II, TM - 300, TM - 930II, TM U-370.
| Using the joystick port as general purpose input
| VGA converter for video projectors and fixed frequency monitors
| VGA converter for video projectors and fixed frequency monitors
| VGA to TV converter
| VGA to TV converter
| Virtual Frequency Meter
| WatchDog for ISA Bus
|
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] 12 |
|
|
