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 for high-impedance magnetic headphones was suggested as an experimental amplifier for hearing...
This circuit is suitable for use with 1400 kHz range FI receivers. Changes can be made to other IF...
When the control level is increased from 0 to 1 (LO to HI), this circuit is activated, which...