Hi all,
I saw an article on a website on how to use a pen laser to make a transmitter and receiver so you can transmit sound from a radio or other device line-out via a laser beam across the room.
https://www.scitoys.com/scitoys/scitoys/light/light.html
it didn't involve many components and to my suprise it actually worked!, i could hear my personal stereo from across the room on my computer just by plugging the receiver into the mic jack of my pc and focusing the laser on the cds cell.
Now i see it works, I want to put it all into a nice little box and improve it some more.
What I need is to amplify the signal coming out of the transformer so the laser is brighter to start with as at the moment it is a bit dim running from 3 x 1.5v batteries (I am guessing because of the transformer).
i have looked at simple amplifier circuits but I am a tad confused with how to implement it in the simple circuit for the transmitter. can someone look at the laser transmitter page above and let me know?
thanks!
I saw an article on a website on how to use a pen laser to make a transmitter and receiver so you can transmit sound from a radio or other device line-out via a laser beam across the room.
https://www.scitoys.com/scitoys/scitoys/light/light.html
it didn't involve many components and to my suprise it actually worked!, i could hear my personal stereo from across the room on my computer just by plugging the receiver into the mic jack of my pc and focusing the laser on the cds cell.
Now i see it works, I want to put it all into a nice little box and improve it some more.
What I need is to amplify the signal coming out of the transformer so the laser is brighter to start with as at the moment it is a bit dim running from 3 x 1.5v batteries (I am guessing because of the transformer).
i have looked at simple amplifier circuits but I am a tad confused with how to implement it in the simple circuit for the transmitter. can someone look at the laser transmitter page above and let me know?
thanks!