This circuit shows how to make an adaptation on an AM receiver to receive CW and SSB signals. The circuit is from an 80's documentation. The diode is commonly used.
With this passive circuit it is possible to modulated in amplitude a low intensity RF signal. The...
This circuit triggers a load that depends on the characteristics of the transistor when we touch...
The circuit shown in the figure can be used to connect a loudspeaker to an amplifier only after...