This is another of the circuits with the LM380 that we have in this section. We found it in an article about Walkman amplifiers in the Radio Electronics magazine of March 1986.
This circuit trips when the input signal goes through zero, triggering a direct current load. The...
Found in a 1980s German publication, this circuit tests batteries by type. The circuit is based on a...
In the figure we have the traditional configuration of a phase shift oscillator that produces a...