This circuit can be adjusted between 0.2 and 2 V to trigger with chosen voltages comparing them with the input voltages. We found it in a 1967 documentation.
We found this configuration in a 70s American documentation. The circuit makes use of operational...
The circuit shown is powered by 5 V and was suggested by Motorola's Linear Databook of 1990....
This simple transistorized intercom circuit was found in a 2000 documentation. It can be powered by a...