In this oscillator circuit using 3 TTL inverters we have all the conditions for the frequency calculation. Power must be supplied with 5 V. The circuit is from an American TTL documentation.
This is the basic configuration of a function generator with the 8038 integrated circuit (uncommon...
This filter for receiving audio in telegraphy was found in a magazine 73 for radio amateurs, in an...
This circuit amplifies VHF signals in the two-meter range and is very critical, especially...