Long time intervals with precision (CB9682E)

This precision circuit can provide timings from 0.2 milliseconds to 3 minutes accurately. The circuit is from an 80's documentation.

| Clique na imagem para ampliar |

Peak voltage hold (CB21518E)
We found this circuit in an American documentation from the 60s. The circuit can be made with...
Car Anti-Theft (CB18813E)
This simple circuit uses few common components and can be installed in any car. In case of...
High impedance transistorized stage (CB7468E)
This amplifier step with a transistor has an input impedance of 100k to 10 M. The transistor can be any...