DC motor speed controller PWM 12-50V 5A (assembled)

This is a speed control circuit for a DC motor. Not only the speed of the motor can be controlled but the frequency also adjustable.(due to the application of Pulse Width Modulation technique).

Specifications:
* Power supply : 12-50VDC. (jumper selection).
* Load voltage : 12-50VDC./ 5A. max.
* Motor speed (PWM) can be adjusted from 0% to 100%.
* Can be adjusted frequency 3 ranges (jumper selection): 1. 50Hz - 1kHz. - 2. 240Hz - 13.84kHz. - 3. 1.9kHz - 100kHz.
* IC board dimension : 3.01 in x 1.83 in.