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 circuit makes use of the Linear Technology LT6100. We find it in a 2005 company manual. The...
This circuit, from a 1976 documentation, amplifies signals from 100 Hz to 600 kHz with a voltage fan...
This zero-crossing detector circuit produces an output pulse every time the input sinusoidal...