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.
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.
Source:http://home.att.net/~wzmicro/3525.html
Thank you.
Related Links
See other circuit on Motor Speed Controller
See other circuit on PWM Speed Motor
More information about IC SG3525
PWM Control Speed Motor 12V By TL494
PWM Motor Speed Controller – DC Light Dimmer by IC LM324
PWM Speed Motor Controller By IC 555
Stepper Motor Driver using L298 and L297
DC Motor Driver with L6203
PWM DC motor control with SG3525
This entry was posted on Wednesday, September 12th, 2007 at 9:26 pm and is filed under Electronic Control, motor speed controller.
