This circuit is an improved version of the previous ones with the LM3914. We found it in the March 1992 issue of Radio Electronics magazine.
In the figure we have an amplifier configuration found in an 80's documentation. The power supply is...
In the figure we show how to implement a voltage reference with the ON Semiconductor rail-to-rail...
This standing wave alarm (SWR) warns when a high SWR value may mean an overload for the...