Found in a February 1949 Radio Electronics magazine, this dual tube mixer has 4 inputs. Power must come from a 250V source.
We found this circuit in the 1990 Radio Electronics Special Projects magazine. The circuit has a...
This circuit generates a signal for double conversion receivers. The signal has the frequency...
In the figure we have the configuration of a 200mV digital voltmeter (LED or LCD) using Intersil's...