This circuit is from an American manual from 1975. The transistors are types of the time, but equivalents can be used, as well as the relay that can be according to the supply voltage.
Found in a 1969 Electronic Design, this circuit is intended to power a load up to 300 mA....
With the circuit shown in the figure it is possible to generate signals up to 65 MHz. The values of...
This stable with the waveforms oscillates at 1006 Hz. We found it in a Ferranti manual from 1964....