Found in a 90’s 303 Circuits, this circuit uses components that are still common and has a common LED as indicator.
This amplifier was found in an English publication from the 60's. The transistors are germanium of the...
The maximum current of this circuit is 1 A. The circuit is from Motorola Linear Interface ICs from...
This circuit can be used to monitor a low frequency source indicating deviations. We found the...