Found in the documentation on PCs, this circuit excites LEDs whose current is determined by R3.
This circuit was found in an Electronics World magazine from 1990. The circuit can be mounted...
In the figure, from a documentation from the 70s, we have a few-watt amplifier for general use....
This circuit is from 1968 and consists of an amplifier for turntable of the time. The CA3020 was...
