Found in American documentation, this crystal oscillator that can have harmonics in the FM range, has the possibility of being modulated in frequency.
Found in American documentation from the 1970s, this circuit can be designed based on a modern SCR,...
This circuit was found in an English magazine from 1978, but it is current and the common 2N3055 can...
This circuit was found in an American documentation from the 90's. What it does is provide at the...