Use Earbuds/Earphones with Crystal Radio

How to use earbuds of earphones, including those from Apple, with a Crystal Radio. To do this, put a transformer between the crystal radio's output and the earbud. In this video I use a doorbell transformer but I found the small transformer attached to the circuit board in a microwave oven worked well too. The high voltage/higher turn count/higher resistance side goes to the crystal radio and the lower voltage/lower turn count/lower resistance side goes to the earphone. A small one-to-one/isolation transformer works well too as well as a small AC-to-AC wall adapter.

For my "Make Crystal Earphone/Earpiece for Crystal Radio - Homemade" video, watch:
   • Make Crystal Earphone/Earpiece for Cr...  

For the "How a Crystal Radio Works" video, watch:
   • How a Crystal Radio Works  

For the "Piezoelectric generator LED lit by rain water" video, watch:
   • Piezoelectric generator LED lit by ra...  

For my webpage about this same topic, using earbuds with a crystal radio, go to:
http://rimstar.org/equip/use_iphone_e...

For more about crystal radios, go to:
http://rimstar.org/equip/crystal_radi...

To follow me on Twitter:
https://twitter.com/#!/RimStarz

http://rimstar.org

Music used throughout:
Decisions Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/b...
ISRC: USUAN1100756