Operating in class AB1, this high-fidelity amplifier was found in the 1961 RCA tube manual. The circuit has high input impedance and good gain.
This circuit was found in the October 1993 Electronics Now magazine. The circuit can be used in a...
The NCX2220 circuit from NXP consists of a voltage comparator with low supply voltage and can...
This direct detection circuit was found in a 1986 documentation. The output is of low power, but...