The circuit is from Ferranti's 1974 transistor manual. Transistors are general purpose types, and the output waveform is rectangular. Components can be changed to other frequencies.
The figure shows how to change the frequency of a 5 V LED blinking. The capacitor can have other...
We find this simple circuit that operates at a frequency of 5 to 10 MHz in an old English...
With this circuit it is possible to use an oscilloscope as a quick component test, checking its...