The circuit we show is part of an article that taught its complete assembly. The article is from the Radio Electronics magazine of August 1983. The thermometer was indicated for automotive applications.
In the figure we have three voltage doubler configurations that can be used in high and low...
In this application, from English documentation, we have the way to activate an AC load up to 10 W...
This 1-transistor reflex receiver was found in a 1963 publication. The coil is for the mid wave...