Found in an 1868 Mullard documentation this circuit has a dynamic range of 10 Hz to 25,000 Hz. Modern equivalent transistors can be used.
This converter converts signals from the 50 MHz band to the AM band, making it possible to receive...
When approached by a circuit that operates with RF signals, this circuit captures them by...
This circuit is from an Electronics Now from the 90s. Operational amplifiers can be replaced by...