This thermal control circuit appeared in Radio Electronics magazine in October 1958. The circuit is powered by the power grid and has two sensors that operate in a differential mode.
This digital potentiometer is from a 1993 publication, but it can be easily assembled today. R1 to...
Maxim MAX16813B 4 Channel LED Driver These Maxim Integrated LED drivers are available from Mouser...
This circuit was found in an American magazine 73 for radio amateurs of the 80s. It is an...