You can use a Schottky diode like a Bat43 for a Germanium diode. Almost identical forward bias. It’s what I used in my signal tracer probe. It works great.
I built a crystal radio last year and had 10 or so 1N34's all of them had slightly different forward voltage bias and I picked the one with the lowest forward bias and it sounded a little better than the rest. Great video Rick as always.
Ok. I did some testing this afternoon and here are my results: 1st place for an orgiginal ( or at least a good copy) Germanium diode with the signal after filtering 100 mV, second place for Skotkky diode with 70 mV and then an interesting thing happens a "fake Germanium " diode from AliExpress with 30 mV (really bad it is like the last place in my ranking) and after all this some random silicon diodes with almost 0 mV. This shows how important it is! This is why a lot of projects fail (a lot of fake, shitty products, you think it should work but it doesn't etc.) . It really detects like a very small signal, I fed 0.3 V and still works, below 0.2 V yes but very noisy etc.
Hmmm 🤔 I have ordered some Germanium diodes from old Polish supply from 80' probbaly I need to compare them because I need to know 😅 Hmm the cost? But I paid like 10 times more for Germanium diodes than for Scottkky diodes so I don't think it is the cost. Sometimes I really have to find out myself hehe
I only hope that they are not faked because I will be quite angry. It is not about cost as relativelly it is not that expensive but I hate wasting my time on fake products which don't work as expected.
That’s probably why my first attempt at making a signal tracer didn’t work well. I probably didn’t use a germanium diode. I’ll have to see if I still have it somewhere.
![Are Elusive Magic Diodes REAL? Germanium Diode Overdrive Tone With 9 Vintage Japanese Diodes [1N34]](http://i.ytimg.com/vi/1g7MEUePGBw/mqdefault.jpg)
You can use a Schottky diode like a Bat43 for a Germanium diode. Almost identical forward bias. It’s what I used in my signal tracer probe. It works great.
Thanks. A Schottky would be a great choice, probably would be less noisy.You all have a great New Year's
@@AllAmericanFiveRadio A wonderful New Year to you! I look forward to more of your videos.
I built a crystal radio last year and had 10 or so 1N34's all of them had slightly different forward voltage bias and I picked the one with the lowest forward bias and it sounded a little better than the rest. Great video Rick as always.
Thanks. Your comment is a good example of why this subject is important.
Thanks Rick! wishing you a Happy New Year!
Thanks Barry. Hope y'all have a great and happy New Year's.
Thanks for that Rick. Hope you had a good Christmas and wish you all the very best for 2022.
Thank you, and you all have a great new years.
Love the way you explain whats going on Rick! Happy New 2022!
Thank you Tony. I hope y'all have a great New Year's.
Learning electronics is like a treasure hunt. One clue at a time...
Yes
Capacitance is quite different as well. Thanks and I hope you have a great New Years!
Thanks, and you have a great New Year's also. Yes the capacitance of the junction is quite different.
I wish you and yours all the best for 2022
Thanks you. You'll have a great and happy New Year.
The two are very different. It is important to know the forward bias voltage when designing for a specific task. Thanks Rick.
Thanks. Yes it is very important. You all have a great New Year's.
Ok. I did some testing this afternoon and here are my results: 1st place for an orgiginal ( or at least a good copy) Germanium diode with the signal after filtering 100 mV, second place for Skotkky diode with 70 mV and then an interesting thing happens a "fake Germanium " diode from AliExpress with 30 mV (really bad it is like the last place in my ranking) and after all this some random silicon diodes with almost 0 mV. This shows how important it is! This is why a lot of projects fail (a lot of fake, shitty products, you think it should work but it doesn't etc.) . It really detects like a very small signal, I fed 0.3 V and still works, below 0.2 V yes but very noisy etc.
Thanks for the information.
Quick and easy way to explain that, thank you Rick
Thanks. Yes it was quick and easy, and accurate. Y'all have a great and happy New Year's.
Nice to see you Rick
Thank you, and y'all have a great and happy New Year's.
Thanks for posting Rick. Good info here. Cheers!
Thanks
Thank you good sir, I think I have found a reliable source in small quantities. :)
Thank you, I'm glad you found a reliable source. You all have a great New Year's.
Recently I have bought some good Schottky diodes with exactly the same forward voltage 0.2 V ! So why are they not used instead of Germanium diodes?
My first thought is cost. I'll check into this. I have copied your comment.
Hmmm 🤔 I have ordered some Germanium diodes from old Polish supply from 80' probbaly I need to compare them because I need to know 😅 Hmm the cost? But I paid like 10 times more for Germanium diodes than for Scottkky diodes so I don't think it is the cost. Sometimes I really have to find out myself hehe
I only hope that they are not faked because I will be quite angry. It is not about cost as relativelly it is not that expensive but I hate wasting my time on fake products which don't work as expected.
That’s probably why my first attempt at making a signal tracer didn’t work well. I probably didn’t use a germanium diode. I’ll have to see if I still have it somewhere.
Thanks. Let me know what happens with the signal tracer. You all have a great many years.
I made TRF receivers with DC biased germanium, silicon and LED's as a AM demodulator.
Try DC biased LED for crystal radio... :)
Try a Galena Crystal
@@AllAmericanFiveRadio My experiment with iron pyrite crystal as a AM demodulator:
m.ua-cam.com/video/cIexDjp0rwQ/v-deo.html