This two-channel bargraph meter uses a single KAA2281 integrated circuit. Found in the January 1991 issue of Radio Electronics magazine. The stereo circuit drives 2 scales of 5 LEDs.
This simple Philips circuit from the 1960s can use any general-purpose transistor. The signal is...
Unlike the previous circuit, this circuit from Electronics Now, October 1993, has the load...
This circuit allows you to modify the resolution of a measurement bridge. It was found in the...