9个LED组成的音频电平表电路
5 LED VU Meter kit is based on LB1409 IC from SANYO, which will indicates the volume level of the audio signal it senses
SUPPLY 12V DC @ 50mA
PR1 REF SET
PR2 AUDIO LEVEL SET
Schematic
.
Parts List
5 LED VU Meter kit is based on LB1409 IC from SANYO, which will indicates the volume level of the audio signal it senses
SUPPLY 12V DC @ 50mA
PR1 REF SET
PR2 AUDIO LEVEL SET
Schematic
.
Parts List
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