Using the 555 and 7400 this circuit was found in the September 1977 Radio Electronics magazine. The power supply must be made with a voltage of 5 V.
The integrated circuit used in this application is not currently common. However, it can be...
We found this simple gain-50 current sensing circuit in a 2005 Linear Technology publication. The circuit...
This circuit was obtained in a publication in 1980. It is the traditional configuration of astable...