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 appears in other articles in this section, but it is very interesting. It is a...
This circuit works directly connected to the network and special care must be taken with its...
The oscillator indicated can produce signals from 50 kHz (approximately) to 7 MHz, depending only...