How to Make Piezoelectric Crystal Speaker

I make a loud speaker for a clock radio using a piezoelectric crystal. Actually I experiment with a variety of piezo crystals. That includes a piezoelectric igniter crystal from a BBQ lighter and a homemade/DIY rochelle salt piezoelectric crystal. I also try out a piezo buzzer from Radio Shack and also a crystal earpiece normally used with a crystal radio. To increase the voltage coming from the radio I first try stepping it up using a doorbell transformer and then I use a microwave oven transformer.\r
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To see my follow-up video Piezoelectric speaker - small crystals/window as speaker for a demonstration using a smaller crystal and using a window as a speaker, click here:\r
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For a video on how to get a piezoelectric igniter crystal from a BBQ lighter, see:\r
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For getting an igniter crystal from a hand lighter, see:\r
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For how to make a rochelle salt piezoelectric crystal using stuff from your kitchen, see:\r
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For showing how to light an LED using a piezo crystal from a gift card, see:\r
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For using a crystal earpiece or a piezo buzzer with a crystal radio, see:\r
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And lastly, see the piezoelectricity section of my website:\r
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To follow me on Twitter:\r
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