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.
This simple version of a function generator with the XR2206 was found in the May 1977 issue of...
In a modern version this circuit can use an LED in series with a resistor in place of the lamp. The...
This VFO was found in a 1980s documentation. The central frequency is given by the crystal and the...