Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

I'm pretty sure to have seen something in this line previously in the group, but i' can't remember when , so I decided to do it myself .
Based on an idea taken somewhere in the net , linked in a message in group (perhaps) , based on a well know feature of semiconductor junction... well nothing really original beside the fact that if you google for it probably you'll never find it.
Big Fanfare !!!!
the Incredible, Marvellous, New !!! Improved !!! Thermostat based on a UA741.
or ... everybody is capable of makin' it with a LM311 !!!
Ok sorry for the introduction, seriously , this a cheap thermo controller that you can build on a perf board with the component you have in the junk box . That's my 2 cents for the net.
keep on the good work !