Circuit Project Electronic

* use a large surface ground track/fill for this circuit, otherwise the LM3524 will not work reliably!
* mount the two potentiometers through the enclosure, as shown in the picture on the start of this page (these pots are used to control the frequency and duty cycle)
* the driver is based on the LM3524 PWM [...]

One of the most fundamental problems in robotics is DC motor speed control. The most common method of speed control is PWM or pulse width modulation. Pulse width modulation is the process of switching the power to a device on and off at a given frequency, with varying on and off times. These on and [...]

Three channel fan speed controller for PC
Jos van Eijndhoven have designed a 3 channel fan motor controllerbased on PIC 16F676 microcontroller. Mcu reads temperature from sensors and outputs PWM modulated signal to each output so the speed of fan is controlled accordignly. Three on board potentiometers controls the start up temperature for each channel. [...]