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.
We found this circuit in English documentation from 1996 for PCs. The circuit is for common...
This circuit uses an operational amplifier to simulate an inductor. The circuit is from old...
Using this circuit the lamps glow in sequence in a speed given by the capacitors. The SCRs present a...