Add the Transformer

Step 3: Add the Transformer

Next we add the first two wires of our audio transformer. Connect the red and white leads of the transformer to the mono jack.

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RAYED says: Oct 30, 2010. 2:51 AM

HOW CAN I IDENTIFY AN AUDIO TRANSFORMER

ElectroFlex in reply to RAYEDMay 18, 2012. 1:18 PM

I began this project a while ago (have yet to finish) and I found one at Radio Shack for around $2.70. The catalog number is 273-1380. Good Luck!

Theinventor94 says: Jun 14, 2009. 5:12 PM

If I connect the transformer with the lower ohm side being the laser side, what differences would it make?

schmidtty says: Mar 10, 2008. 5:06 PM

hey u went to radio shack didn't you, my mono jacks and audio transformer look exactly the same

lionelsabbah says: Jan 30, 2008. 5:41 PM

hey im also trying to do this... i bougth all the parts and connected them together but it doesnt seem to work.. instead of the 2 mono jacks i used the ends of some headphones i didnt need anymore.. do u think this could be the reason its not working? could u give me any other advice? im kinda desperate cuz my science fair is due next week sooo pleassseee hellppppp lol thnx in advance

saites2001 (author) in reply to lionelsabbahJan 30, 2008. 7:27 PM

Other than "doesn't seem to work", what is it doing? As far as using headphone jacks, most headphone jacks are stereo, and I'm not really sure what the results would be. If everything else seems to be working and you are desperate for getting it to work quickly, I would suggest changing them and seeing the results. If not, let me know more specifically what seems to be happening and I will try to do my best to help.

kennyvs says: Oct 20, 2007. 3:00 PM

hey i love this project but im having trouble after connecting all the parts of the transmitter. When i add the power the light does turn on, but the light doesnt blink after i connect the mono jack into a source. I was wondering "do you know the problem?

saites2001 (author) in reply to kennyvsOct 21, 2007. 9:05 AM

Chances are, you won't actually see it "blink," per se. After you build the receiver, test the unit. If it doesn't seem to be working still, check your connections. Let me know if you still need help.

kennyvs in reply to saites2001Oct 21, 2007. 1:33 PM

Ahhh, thnx man. You were right, it was blinking too fast for eyes to see. I got it to work now. THnx man ^.