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How to make a homemade crystal radio earphone (earpiece) for a crystal radio, starting from a microwave oven piezoelectric crystal speaker. This goes step-by-step, from taking it out of the microwave oven, desoldering it from the circuit board, gluing the end of a pen as a hearing tube to direct the sound into your ear, hot gluing on a back piece to capture sound from the piezoelectric crystal, and even cleaning the tube with rubbing alcohol before use. I also show how to test it using a voltmeter while tapping on the piezo crystal. Lastly, I demonstrate it in use with a homemade crystal radio.
To see how to make the homemade crystal radio used in this video, watch "How to Make/Build a Crystal Radio":
• How to Make/Build a Cr...
For crystal radio earphone tips, watch "Crystal Radio Troubleshooting and Tips":
• Crystal Radio Troubles...
And for the "Make Solar Cell Transistor Powered Calculator using 2N3055" video, see:
• Make Solar Cell Transi...
For more about crystal earphones, visit:
rimstar.org/equ...
For more about crystal radios, visit:
rimstar.org/equ...
The crystal earpiece (piezoelectric earphone) and/or 1N34 germanium diode can be orders from these sources:
www.scitoyscat...
www.maplin.co.u...
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Music used throughout:
The Path of the Goblin King Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
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ISRC: USUAN1100873