This circuit is from Mullard 1969 documentation. The circuit operates at a relatively high supply voltage and has a 10 Vpp output. The transistors are of the time, but admit equivalents.
In fact, this circuit can generate 50 Hz or 60 Hz signals depending on the power supply. The input...
The circuit shown in the figure generates a rectangular signal whose frequency depends on C1. For...
This circuit was found in an old European documentation, but it is still current due to the...