Tag: NTC

The project described here is a switch mode fan speed controller for use with brushed or brushless DC motors. Temperature proportional speed control is accomplished using pulse width modulation (PWM). 10K Ohms NTC is used to sense the temperature. The project is built using TC648 chip...

This is a very powerful DC Motor speed controller for DC motors up to 330V DC and current up to 2A. Basically, the project is a high voltage PWM source with adjustable frequency and adjustable PWM duty cycle range 0 to 99%.  The board has been designed considering many applications...

Although this power supply design is specific to the Intelligent Power Modules (IPM), the concepts and circuit design may be used for any power supply that requires high voltage output up to 400V DC and 6 A. It is an unregulated power supply, DC output is dependent on AC input.  The...