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PWM DC motor using SG3525

2016-09-01 00:05  
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PWM DC motor using SG3525

Circuit diagram is one of a series of PWM. Circuit diagram is ideal 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. Big advantage as the circuit is that almost no power loss in the control 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. The following is a schematic drawing:

PWM DC motor using SG3525

In this circuit diagram, there are three trimpot, where the function of three trim pots are as follows: VR1: setting the minimum output voltage VR3: setting the maximum output voltage VR2: setting the output frequency.