This circuit was found in documentation from the 1980s. It is powered by the audio signal that must be cut. Transformers are the critical components and transistors are 2N2222.
This circuit can switch signals in the 3.5 to 30 MHz band. We found it in a QST magazine from the...
This is the receiver for the CB17133E. Its main feature is that it uses only transistors. The...
This is another one of the many versions of Nicad battery chargers that we have on the website and in...