On 22/05/2015 19:18, wrote:
On Friday, 22 May 2015 17:26:41 UTC+1, Andy Burns wrote:


That circuit contains no feedback, making it bangbang operation rather than proportional.

Using transistors as temp sensors is cheaper.


NT


I posted wrong link.
This is the correct schematic: http://tinyurl.com/nanzf8d
Or the original article (cct option 3):
http://www.bit-tech.net/modding/2001...n_controller/1

Full PWM control


Same question though on Thermistor position