Make Crystal Earphone/Earpiece for Crystal Radio - Homemade
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Discussion
- What do you think about this? see, and tell us now.
- If you leave it on what happens to the output? does it get more intense with time?
- try putting the sound hole against a sea shell for amplification like a Bodes System
- I am not tearing apart my $700 microwave for this...
- Thought for a second this said how to make crystal meth. Crysal radio earphone is just as interesting I suppose.
- Thanks man! I am restarting a hobby of crystal radios after nearly 40 years to find almost everything involved is scarce, now. The video is pure gold and like made for my case; I have a junked microwave in the basement. I was wondering if those tiny diodes on the PCB might be useful, too, even if a bias current might be needed, and there is a useful looking transformer there.Have not had the time to look at all your videos, but nice channel. Subscribed!
- Here's a tip, you can also use the mic from a telephone handset. The part that you use when speaking. Its also a piezo speaker
- please help me out so what i
- sir i wana make project using fibre optical wire plz help me i am a student my e mail is rizvi2399@gmail.com
- I just subscribed. I made a similar radio but I used the NTE 109 diode and placed the antenna coil inside my tunning coil by doing this it makes it easier to tune by being able to move the antenna coil side to side inside the tunning coil. Instead of a capacitor i wired in a ferrite rod with coil from an old radio before the incoming side of diode to the antenna. This may give it a boost. if you would like to see it check out my channel. the video quality isn't to good but its all i had.
- i somewhere read that voltage depends on the height of the antenna ... something like connecting it to the lightning arrester or roofgutter of a skyscraper
- i resigned on the crystal earpiece when i build my crystal radio with a germanium diode ... i plugged it right into my sound card and afterwards to some amp loudspeaker ... maybe things will change cause i really got interested in those piezo things
- Make a Video about gold
- It was a pleasure meeting you guys too! It's rare that I meet filmmakers in person. Too bad I'm here for only a month and back to Ottawa in January otherwise we could have done some movies together if you were so inclined.
- Is this the same type of speaker you find in most singing greeting cards?
- think Buddy could make this?
- oh, i got a microwave and it dings (ding is produced by bell or something) when it's cooked, also, it has no buttons, you have to spin the timer. soo my microwave is probably old designed.
- why not to make a crystal earphone, using your homemade rochele salt?
- Thanks! That's yet another source of piezo crystals. Good to know. And I'm glad you like my videos! Thanks for the feedback.
- Oh cool. Just had a look at their website... things that make all sorts of sounds.
- Yeah, I keep finding new things in this microwave oven. It really is a treasure trove. Took from capacitors from the board too while I was at it. Glad to hear you enjoyed the video.
- That's very creative Steve :) I built a radio just like that about 3 years ago and had great success hooking the antenna to my drain pipe on the side of the house. Would a longer antenna make the signal stronger for you?
- A timer that you spin/dial. That does sound like an old design. As you say, it's probably a mechanical bell. There's no harm in opening it up and checking for the fun of it. Just be careful not to touch the high voltage capacitor. I'd say the capacitor is usually in the bottom, rear on the side with the electronics but with your microwave oven it may not be.
- There are some links in the description below this video to where you can buy them online.
- my mom dosent let me do this to her microwave oven will any other like a orignal microphone work
- You're welcome. Thanks for letting me know.
- Interesting solution ill have to try it. Glad I met you while we were shooting that movie
- Thanks for these great videos! I was looking for a cheap source of piezo speakers and found the easiest for me was to buy a window alarm from Dollar Tree. This works great because it also provides the housing.
- I have only one piezo crystal. :)
- I can't believe you didn't go an extra step and show them how to power two earphones with just another diode. they work on negative voltage too.
- I don't know the substance. It looks like the same type of material as in piezo disks you find in commercially available crystal earpieces, gift card speakers and piezo buzzers, in case that helps you find out. The use in a microwave oven is for the speaker that beeps when something is cooked.
- After what Buddy made today, I wouldn't recommend it. :-P
- I found out some back most Microwaves thrown out just have a bad fuse.
- Hope that wasn't a good microwave.
- Very ingenues! You can power a LED with most piezoelectric crystals. The bigger the better.