This integrating circuit multiplies the time that can be obtained with a 555 timer. We find it in an Electronic Design from the 90s. The circuit uses components that are still common today.
This circuit adds a beep to turn on with car flashers that do not have this feature. A 47 ohm to...
This circuit that can amplify signals from 0 to 30 MHz was found in a 90s Popular Electronics....
We found this solid-state relay circuit that can function as a shield in a Radio Electronics...