This circuit is suggested by National Semiconductor in its Linear Applications Handbook. The LM3909 integrated circuit consists of a very low consumption oscillator with a power supply of 1.2 V.
This circuit also appears elsewhere on this site, obtained from other sources. This is an 80's...
This ttransistor test was found in a 1987 documentation. It is a simple oscillator that allows to...
In the circuit of the figure we used a potentiometer of 1 k ohm. We can use a larger...