Found in a Motorola documentation from the 70s, this circuit makes use of transistors of the time. Modern equivalents can be used. The diode also supports an equivalent.
This circuit, from a 1988 documentation, consists of an automatic temperature control using an NTC...
The circuit shown is powered by 5 V and was suggested by Motorola's Linear Databook of 1990....
This circuit was found in the June 1982 issue of Radio Electronics magazine. It provides reference...