We found this circuit in an EDN from the 90s. The circuit is a voltage quadruplicator using operating equipment of the time. The output current is low.
This circuit that imitates the sound of the cowboys' calls with their “louder” was found in a...
We found this circuit loader in a French magazine Electronique Radio Plans from July 1993. The...
We have in the figure a traditional amplifier configuration with operational amplifier. The source...