This ultra-low distortion driver was found in 80's Analog Devices documentation. The circuit has a THD of -115 dB under load of 600 ohms at 20 kHz.
We found this circuit in the Linear Applications Handbook published by National Semiconductor in...
In a September 1992 Radio Electronics article, we found this basic 555 circuit used to generate fixed...
In the figure we have a simple way to have a peak bargraph indicator. The amplifier is of the...