This circuit is suitable for the calibration of old analog oscilloscopes. It was found in documentation from the 1970s and could be useful if someone is recovering an oscilloscope of the time.
This circuit adds a beep to turn on with car flashers that do not have this feature. A 47 ohm to...
In the figure we have the way to simulate an SCR using two complementary general-purpose...
This circuit different from the timer was found in an English publication from 1978. The circuit uses...