Found in Electronics Now from the 1980s, this amplifier can also be seen in commercial amplifiers of the time. The integrated used is uncommon nowadays. The power is 33 W.
A sub temperature sensor circuit with the Norton LM3900 amplifier is shown in the figure. R3 has...
The presented circuit consists of a double phase shift oscillator capable of generating two sine...
This circuit appears in other articles in this section, but it is very interesting. It is a...