DIY simple electronics projects for beginners is another video about assembling the audio VU meter electronics kit cheap for beginners
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I did find this electronic kit when i was searching for some transistors for my future videos,and i was there in a small bag with no diagrams,no instructions and i decided to assemble it to see what electronic project can become.
This electronics project is an audio VU meter a nice addition to your speakers it gives a nice led flashing mood to your sound system and shows thru the 5 led how the music is doing up and down.
A volume unit (VU) meter or standard volume indicator (SVI) is a device displaying a representation of the signal level in audio equipment. The Acoustical Society of America standardized it in 1942 (ANSI C16.5-1942)[1][2] for use in telephone installation and radio broadcast stations. Consumer audio equipment often features VU meters, both for utility purposes (e.g. in recording equipment) and for aesthetics (in playback devices).
Surround audio VU meter graphic

The original VU meter is a passive electromechanical device, namely a 200 µA DC d'Arsonval movement ammeter fed from a full wave copper-oxide rectifier mounted within the meter case. The mass of the needle causes a relatively slow response, which in effect integrates the signal, with a rise time of 300 ms. 0 VU is equal to +4 dBu, or 1.228 volts RMS, a power of about 2.5 milliwatts when applied across a 600 ohm load. 0 VU is often referred to as "0 dB"
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