This circuit is design for accurate control of DC motors. DC voltage conversion to a series of pulses, such that the duration of the pulse is a direct proportion to the value of DC voltage. Here’s the figure of the circuit.
This circuit protects against overload and short, PWM range can be adjusted 0-100%, PWM frequency of 100Hz-5KHZ adjusted. Operating voltage of 8 V ~ 35V, minimum current consumption is around 35mA. Maximum current can go to 6.5A. Efficiency better than 90% at full load. There are three trimpot potentiometer, where the function of three trim pots are as follows: VR1: adjust the minimum output voltage VR3: setting the maximum output voltage VR2: setting the output frequency.
This circuit protects against overload and short, PWM range can be adjusted 0-100%, PWM frequency of 100Hz-5KHZ adjusted. Operating voltage of 8 V ~ 35V, minimum current consumption is around 35mA. Maximum current can go to 6.5A. Efficiency better than 90% at full load. There are three trimpot potentiometer, where the function of three trim pots are as follows: VR1: adjust the minimum output voltage VR3: setting the maximum output voltage VR2: setting the output frequency.
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