Vu-Meter 100 LED with 10x LM3915 - DIY

Electronic Projects Stefano91ste
Electronic Projects Stefano91ste
10.7 هزار بار بازدید - 7 سال پیش - Vu -meter made ​​with 100
Vu -meter made ​​with 100 LEDs and 10 LM3915 . The circuit is connected in parallel to the stereo speakers . This Vu -Meter using the two bars from each LED 50 formed in all from 10 blue bar graph is able to display the volume level of the output from an amplifier . The final tool is powered directly from the mains at 220V , and thanks to a power supply and internal voltage regulator LM7809 I created two lines of supply 9V DC, The two lines 9 volt feed separately the two LED bars . Peak power of the Vu -Meter , with all 100 LEDs are lit , it is about 1,45 Ampere , however I would recommend you to use a power supply from at least 2 Amperes and connect it to output a 4 amps fuse . I connected the audio inputs on two potentiometers 10 Kohm that serve to reduce the input power if it is connected to the amplifier would send too much power. The whole was then mounted within a plastic case and aluminum

► Electric diagram at 2:43

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WARNING: Video is for demonstration purposes only, i do not take any responsibility for damage to things, people or animals.

#VuMeter #Electronic #LM3915
7 سال پیش در تاریخ 1396/03/18 منتشر شده است.
10,732 بـار بازدید شده
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