LED tuning indication circuit

Published:2011/5/25 22:11:00 Author:Christina | Keyword: LED, tuning, indication circuit | From:SeekIC

You can install a LED on the first endpoint of the tuning dish. Which light-emitting diode conducts, the tuning instruction will be away from it, when the two LEDs are all cut off, the tuning instruction will goes to dead point, so we get the right tuning instruction point. The advantage of the tuner is the low current consumption, you can use a LED which has the weakest light to indicate the very tiny tuning error. By adjusting VR1, you can make the dead point area wide enough, so the LED will not flash because of the big volume language or music.



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