PWM DC motor control with SG3525

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This control circuit is ideal for the accurate control of DC motors as well as other applications like lighting levels and small heaters etc. The circuit converts a DC voltage into series of pulses, such that the pulse duration is directly proportion to the value of the DC voltage. The great advantage of such a circuit is that almost no power is lost in the control circuit.
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This circuit protects against overload and short circuit, PWM range can be adjusted from 0-100%, PWM frequency is 100HZ-5KHZ adjustable. Operation voltage from +8V~ 35V, minimum current consumption is about 35mA. Maximum current can go up to 6.5A. Efficiency better than 90% at full load.

The functions of three trim pots are as follow:
VR1: setting the minimum output voltage
VR3: setting the maximum output voltage
VR2: setting the output frequency.

Read More Source:
http://home.att.net/~wzmicro/3525.html
Thank you.

This entry was posted on Wednesday, September 12th, 2007 at 9:26 pm and is filed under Electronic Control, motor speed controller. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.