Found in a European magazine from the 1980s, this circuit can amplify signals from 10 kHz up to over 220 MHz with good gain. MOSFET supports equivalents.
This dynamic mixer allows for smooth adjustment of the signal's passage from one channel to...
Using this circuit a low current switch can be used in the control of heavy duty loads, powered...
We found this circuit in an old American documentation for hams. The circuit serves as a telegraph...