10A 12VDC Motor Speed Controller Kit

Refer: Silicon Chip June, 1997.
Use this kit for controlling 12V DC motors in cars such as fuel injection pumps, water/air intercoolers and water injection on performance cars. You can also use it for headlight dimming and for running 12V DC motors in 24V vehicles. The circuit incorporates a soft start feature, which is used to reduce inrush currents, particularly if the kit is to control 12V incandescent lamps. As presented, the kit will control loads up to 10 amps, although the addition of an extra MOSFET transistor will double that capacity to an amazing 20 amps.

* Kit includes PCB plus all electronic components to build the 10A version.
* Extra MOSFET available separately, ZT2450.