Unlike the previous circuit this one trigger when the temperature drops below the set value. The circuit is from June 1986 Radio Electronics magazine.
This circuit is designed to control static loads fed by direct voltage. The circuit is from...
The 4046 PLL is uncommon these days. This circuit was found in the August 1994 issue of...
This two-transistor circuit was found in American documentation from the 1990s. The circuit can use...