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

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






;-)

tpetar said:

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




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

;-)

Click to expand...

thanks for this!