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using transistor as a switch(sound as input, light as output)

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aarviii

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hi, newbie here. we are given a project using transistor as a switch. can you please give me an example or any reference how to use sound as input and light as an output. i don't have any idea how to start to make plan for it. please.
 

aarviii said:
hi, newbie here. we are given a project using transistor as a switch.
Click to expand...

Transistor as a Switch
http://www.electronics-tutorials.ws/transistor/tran_4.html

Various circuit examples
http://www.google.rs/search?q=trans...JMIiYhQfnjICoAQ&ved=0CCoQsAQ&biw=1024&bih=608


aarviii said:
can you please give me an example or any reference how to use sound as input and light as an output. i don't have any idea how to start to make plan for it. please.
Click to expand...

Sound level display
http://www.radiosparks.com/schematics.asp?UID=Sound+Level+Display

MK103D.GIF





;-)
 
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