With this passive circuit it is possible to modulated in amplitude a low intensity RF signal. The circuit is from old American documentation and uses a germanium diode as its main component.
This circuit, which in our times would be called a shield, can also be used with other loads. The...
Found in an Analog Devices documentation from the 1990s, this circuit has a feedback resistor to...
This circuit for high-impedance magnetic headphones was suggested as an experimental amplifier for hearing...