This circuit is from a 1980s Motorola documentation. The circuit can be made with modern equivalent components. The original circuit is for the 115 Vac (110 V) grid and has two settings.
This 5-transistor receiver for the medium wave range was described in an article in Radio...
This circuit was originally designed to maintain the temperature of a brooder at 41º C. However,...
This circuit is from old documentation but uses components still common in our market. The circuit...