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How to Make Crystal Radio Amplifier for Speaker Video

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How to make an amplifier for a crystal radio that plays it on a loud speaker, like a permanent magnet speaker. This shows the circuit then goes step-by-step through making it on a perfboard. This amplifier circuit is built around the LM386 amplifier chip,
and uses various capacitors and resistors. I used an equivalent part for the LM386, the NTE823.

This video has correct English captions. Click on the CC button at the bottom of the video to see them.

The book I mentioned that I first found this project in (very good
collection of projects):
"Radio Receiver Projects You Can Build" by Homer L. Davidson

The LM386 chip document I mentioned containing the circuit and more
chip details on Texa Instruments' website:
http://www.ti.com/lit/ds/symlink/lm386.pdf

See also:

How to Make/Build a Crystal Radio
http://youtu.be/VqdcU9ULAlA

Portable Crystal Radio using Loop Antenna and Pizza Box
http://youtu.be/iunAvz9PbN0

How Radiation Works - Americium 241, Alpha Particles and Gamma Rays
http://youtu.be/aJkx6hAD-4E

How a Crystal Radio Works
http://youtu.be/0-PParSmwtE

How to Make Amplifier for Crystal Radio Earpiece
http://youtu.be/cQ-LxMDrD_o

For my webpage about making this crystal radio amplifier, go to:
http://rimstar.org/science_electronics_projects/make_crystal_radio_amplifier_for_speaker.htm

Follow behind-the-scenes on:

Twitter https://twitter.com/#!/RimStarz

Google+ https://plus.google.com/116395125136223897621

http://rimstar.org

Music used from 0:15 to 2:31 and from 9:08 to 9:35:
5 Cents Back - music by audionautix.com

Music used from 2:37 to 4:50 and 7:44 to 8:25:
Sneaky Snitch Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/
ISRC: USUAN1100772

Music used from 4:50 to 7:44:
Decisions Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/
ISRC: USUAN1100756
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