This simple clock can be used to generate signals up to 100 kHz, depending on the crystal. We found it in a 1967 documentation. Note the high supply voltage.
Using one unijunction transistor and two bipolar transistors, this circuit generates a signal from...
This circuit was found in an American 80s circuit manual. The components used are unusual. The...
We found this circuit in 1969 American documentation. FETs admit equivalents, as do transistors. The...