Best lesson I've ever taken about electrects! Very well explained, now I know what every component is used for instead of just following a recipe. Many thanks!
Best instructional video I'v ever seen. This is the BEST way to learn anything on youtube. Please make tons of videos like this! Thanks man for making this video! :D
There are several things I really appreciate in your video. You first show is what type of output that comes in the Oscilloscope. Then we know what we are dealing with. They you develop the most simplified amplifier. No gimmicks, just a simple amplifier. It does a good job. Things work. If it works, cant complain. Enjoyed your video and recommended to my younger brother too! I learnt a lot having a decade experience in electronics and my brother will learn a lot too. Thanks.
What a phenomenal tutorial. You explain things in a way, that makes it easy to absorb, and understand, unlike mainstream academia which teaches in a very sterile, and emotionless manner. Because of you, and the way you connected that Electret Mic to an, "O-Scope", I finally understand the minuscule amount of voltage produced by the Electret, and why one generally needs to add some type of amplification immediately following the Mic. All I can say is Thank You for making learning, intriguing.
Built it and used it as input to an Lm386 audio amplifier IC. Works. Also, a good explanation of how it works. Cheers. I will add it to my Electrocircuit page.
I really like this video. You explain why some parts of the circuit need to be modified/upgraded to a better schematic with more components. As far as a video which teaches you the WHY aspect of things, this is second to none. Great job explaining yourself and why you built it the way you did. If only all my teachers I encountered through school explained the WHY part as well as you do in this video! Thumbs Up!
I know this is an old video, but I built your circuit, and I made a correction, to get way more gain and to not cut off the low tones -> replace the 100nF caps with 47uF ones. Much better! Great video by the way :)
The way you explained it explains and coincides with a recent experience of learning about pull up resistors in SPI communication in Arduino. This is similar. I can now see how they are used in your circuit which seems to be a very clean, simple and pure circuit. Good luck on your microphone idea.
This is awesome! A note: *PLUGIN POWER*! Google it! I didn't know myself about this until a few days ago, but apparently there is around 3V coming from the sound card at the mic plug, specifically to power electrets. I'm not sure of the current capabilities or if you can drive a transistor amp with it, but if you can and it's clean enough this design can be used without external power. I'm thinking of trying to make a passive noise canceling arrangement with two out of phase electrets that can be an add-on mic for headphones.
thank you so much for the video, you explain the circuit diagram in a way that is easy to comprehend and allows one to understand how the components and each part of the circuit works instead of following directions with no fundamental knowledge. keep making. vids
Electret mike needs at least 300 microAmperes of bias current. Voltage drop on 10K resistor is 3 volts in this case - which is all supply voltage of 2AA batteries. For such low voltage - 4K7 bias rezistor is better option - that ensures more "voltage room" for mike capsule.
Thanks. I thiiiink... I followed,... just about... perhaps one where I have to experiment with the scope a little as I build it to understand what goes on with the voltage levels (was a little lost as to where the 0.8v came from) or try on the javascript circuit simulator to get a better idea of what goes on. Really appreciate you building it up as gradually as you can though and showing what comes out at different stages. No one else does that that I can remember. Really helps with the learning.
Greetings from India.This is the best demo of electret microphone amplification project I've seen. Very methodical, step by step aporoach, principles working, reason for capacitive coupling/ dc voltage elimination , amplification , displays, circuit diagram, intermediate and final results make it a delight to watch.👏👏👍 kudos. Some oops moments make it more interesting and lively too😀 Look forward to more
Shit! I think I just subscribed on purpose to someone who gives GOOD detailed explanations of what he's doing and why it's working/not working. I hope all the videos are like this. GREAT JOB! THANK YOU!
Great!!! Magnificent realization with the mic capsule. I am now going to search for the components and repost it. Apropos can you recommend me an environmental recorder to record the noises that are present in my house, refrigerator noise, heating, voices of neighbors talking at night (with a wireless multi-frequency microphone those used for karaoke and so on). Finally, I would like to use a condenser capsule but I don't have the mosfet schematic in hand. I thank you and look forward to info. Thank you very much. Hi.
This reminds me of an amplifier experiment I made a long time ago. It was a 2 transistor, 2 transformer push pull amplifier that I connected a 24inch speaker(with it's own transformer) to the INPUT as a mic. and headphones to the OUTPUT. I was outdoors and could hear someone whisper from 50 feet away.. The amplifier was powered by a 9 volt battery.
Loving your channel. it's inspiring me to learn electronics to be able to do projects like this. I'm looking forward to seeing your usb driven professional studio quality mic
I wasn't able to eliminate distortion with this circuit. In the end I went for the LM386 preamplifier circuit and worked perfectly. I have a great soundig condenser mic in my guitar now and mix the signal with the undersaddle piezo.
Your video is superb. I am doing a mini project named multi purpose listening device in which i have to do the work which u explain in your video . Bcoz of yours i got a idea how to do
At 3:20 you *don't* need to charge a capacitor. The point is that electret material carries a permanent charge. The power source is needed because there's a FET inside the capsule which buffers the signal and reduces the impedance. The first resistor is the drain load of that FET.
Hi, very nice tutorial, +1. I wannt to ask if you can show us stereo amp with dual these microphone, using PC Line input. Thank you and Merry Christmas.
I want to use an electret microphone connected to a stethoscope so I can hear the blood flow would you use this preamp to do the job any suggestion would be good thanks
Hey just quick question, do you think we can connect this to a phone instead of a computer's sound card and still get the waveforms?? I installed wavepad, which is like audacity but for phones.
Always check the pin-out on each transistor - Philips Brand has a reversed arrangement. Check your Datasheet to make sure the part matches. Fairchild,Motorola,and most others are the same Philips is the only one that I know for sure that is different.
Hola, muy buen video, pero me ayudarias mucho si me respondes esto: que hago para detectar los sonidos graves (bajos) de la musica a una distancia de 10 metros? estoy tratando de hacer un vumetro y necesito que el microfono sea capaz de detectar el sonido del ambiente a una distancia considerable.
I replicated this circuit and it worked straight out of the box. My signal to noise ratio wasn't as good as yours though. Is there a way to improve this? Maybe by changing the value of the 100k resistor? Or using 9v instead of 3? Excellent well structured video.
thank you very much for the explaination of the waveform shifting! i have a question: can i put another stage of amplification or it would have too much noise?
You can, however you could just use a single stage 2 transistor amp. that's a bit more sophisticated. Another option is to power this circuit from a 9 volt battery instead and that should bring the output up a little. If you do that, everything can remain the same except for the 100k resistor going from base to collector of the transistor. Increase that resistor to 680k
Best lesson I've ever taken about electrects!
Very well explained, now I know what every component is used for instead of just following a recipe.
Many thanks!
Best instructional video I'v ever seen.
This is the BEST way to learn anything on youtube. Please make tons of videos like this!
Thanks man for making this video! :D
I just finished building your circuit. It worked out great. Your explanation of how to build the circuit was very easy to follow. Thanks a lot.
There are several things I really appreciate in your video. You first show is what type of output that comes in the Oscilloscope. Then we know what we are dealing with. They you develop the most simplified amplifier. No gimmicks, just a simple amplifier. It does a good job. Things work. If it works, cant complain. Enjoyed your video and recommended to my younger brother too! I learnt a lot having a decade experience in electronics and my brother will learn a lot too. Thanks.
What a phenomenal tutorial. You explain things in a way, that makes it easy to absorb, and understand, unlike mainstream academia which teaches in a very sterile, and emotionless manner. Because of you, and the way you connected that Electret Mic to an, "O-Scope", I finally understand the minuscule amount of voltage produced by the Electret, and why one generally needs to add some type of amplification immediately following the Mic. All I can say is Thank You for making learning, intriguing.
i like the approach of showing each block added to the previous. thank you.
This is possibly the best explanation I've ever heard. Thanks a lot man. Hope you will do some video about the DIY studio quality mic ;-)
me too
ProXicT ya of course.. Please Sir For Us.... Do it
ProXicT just SUBSCRIBED Now you Have to make Diy video 😊
Nicely explained. One of the few sources that explains what each component in the preamp circuit actually does.
Built it and used it as input to an Lm386 audio amplifier IC. Works. Also, a good explanation of how it works. Cheers. I will add it to my Electrocircuit page.
Its always so satisfying to see an amplified signal from mic.
I really enjoyed your reasons for selections of the circuit components. Absolutely brilliant!
I really like this video. You explain why some parts of the circuit need to be modified/upgraded to a better schematic with more components. As far as a video which teaches you the WHY aspect of things, this is second to none. Great job explaining yourself and why you built it the way you did. If only all my teachers I encountered through school explained the WHY part as well as you do in this video! Thumbs Up!
I know this is an old video, but I built your circuit, and I made a correction, to get way more gain and to not cut off the low tones -> replace the 100nF caps with 47uF ones. Much better!
Great video by the way :)
The way you explained it explains and coincides with a recent experience of learning about pull up resistors in SPI communication in Arduino. This is similar. I can now see how they are used in your circuit which seems to be a very clean, simple and pure circuit. Good luck on your microphone idea.
This is awesome! A note: *PLUGIN POWER*! Google it!
I didn't know myself about this until a few days ago, but apparently there is around 3V coming from the sound card at the mic plug, specifically to power electrets. I'm not sure of the current capabilities or if you can drive a transistor amp with it, but if you can and it's clean enough this design can be used without external power. I'm thinking of trying to make a passive noise canceling arrangement with two out of phase electrets that can be an add-on mic for headphones.
Fantastic job. I love the way you explain your way through each part of the schematic.
8 years later And still cool! 🤤
THANK YOU ! Clear explanations, clear diagrams, great video! You are an awesome human being !
Thanks for sharing with us :)
Lots of Love
It is probably the best explanation of this topic in TH-cam
This is great. It's a simple circuit and I haven't heard noises. It's fantastic. Good job man. Congrats!
thank you so much for the video, you explain the circuit diagram in a way that is easy to comprehend and allows one to understand how the components and each part of the circuit works instead of following directions with no fundamental knowledge. keep making. vids
I watched meybe 100 videos abaut this topic this is the best one. Thank you.
where we can find the bc547c ???
Very good video and I like the way you explain everything you are doing in not too technical terms. making it easy for anyone to follow. thumbs UP :-)
Electret mike needs at least 300 microAmperes of bias current. Voltage drop on 10K resistor is 3 volts in this case - which is all supply voltage of 2AA batteries. For such low voltage - 4K7 bias rezistor is better option - that ensures more "voltage room" for mike capsule.
Thanks. I thiiiink... I followed,... just about... perhaps one where I have to experiment with the scope a little as I build it to understand what goes on with the voltage levels (was a little lost as to where the 0.8v came from) or try on the javascript circuit simulator to get a better idea of what goes on. Really appreciate you building it up as gradually as you can though and showing what comes out at different stages. No one else does that that I can remember. Really helps with the learning.
That's a great video. One missing details is that inside the electret capsule there's a usually a JFET transistor doing the initial amplification.
That was a great explanation! With the schematics, the oscilloscope... Just awesome. I wish more TH-cam content was like this. Subscribed. Keep it up!
The best detailed explanation! I'm gonna make one for a Djembae drum recording.
Sounds better in that room with that new mic you put together
Greetings from India.This is the best demo of electret microphone amplification project I've seen. Very methodical, step by step aporoach, principles working, reason for capacitive coupling/ dc voltage elimination , amplification , displays, circuit diagram, intermediate and final results make it a delight to watch.👏👏👍 kudos.
Some oops moments make it more interesting and lively too😀
Look forward to more
What an awesome video with great detailed explanation. Great learning. Thank you for sharing.
Excellent. Gradually building the circuit with apt explanation..
Shit! I think I just subscribed on purpose to someone who gives GOOD detailed explanations of what he's doing and why it's working/not working. I hope all the videos are like this. GREAT JOB! THANK YOU!
ProTip: ajust the 10k current-limiting resistor to adjust mic sensitivity/output level. Really helps a lot with MSGEQ7 for instance.
Great!!! Magnificent realization with the mic capsule. I am now going to search for the components and repost it. Apropos can you recommend me an environmental recorder to record the noises that are present in my house, refrigerator noise, heating, voices of neighbors talking at night (with a wireless multi-frequency microphone those used for karaoke and so on). Finally, I would like to use a condenser capsule but I don't have the mosfet schematic in hand. I thank you and look forward to info. Thank you very much. Hi.
This reminds me of an amplifier experiment I made a long time ago. It was a 2 transistor, 2 transformer push pull amplifier that I connected a 24inch speaker(with it's own transformer) to the INPUT as a mic. and headphones to the OUTPUT. I was outdoors and could hear someone whisper from 50 feet away.. The amplifier was powered by a 9 volt battery.
Love the sound fx on 'AMPLIFIED'.
that video makes very clear to understand using a capacitive microphone
You saved me! Thank you so much for such clear instructions!
Please keep up this great work.
Very nice presentation! Thanks! I like your posting the circuit diagrams and waveforms!
Great video. Thank you. I would like to see more about high speed ADCs.
Great job, thank you - just what I was looking for! Now I'm off to build my prototype (of which an electret microphone is but one component)!
Loving your channel. it's inspiring me to learn electronics to be able to do projects like this.
I'm looking forward to seeing your usb driven professional studio quality mic
That´s a really great instruction video. I'd like to see more of these.
I´m going to build this little amp by myself an play around with it...
dankeschön. für nen ab&zu-löter wunderbar aufgeschlüsselt.
This is exactly what I needed, and is exactly what I wanted to do! Thank you so much for this video
Great explanation of electronics fundamentals step by step.
Very good :-)
good talk about the basiscs. I like how easy you try to bring over not soooo easy parts.
looking forward for the next vids.
13:08 Finally, a desk messier than mine :) Thanks for this, messing around with electrets for the first time and this is perfect :)
Fabulous explanation. Really enjoyed learning. Thanks for sharing ✨✨✨👍
I wasn't able to eliminate distortion with this circuit. In the end I went for the LM386 preamplifier circuit and worked perfectly. I have a great soundig condenser mic in my guitar now and mix the signal with the undersaddle piezo.
This circuit works well and easy to add second stage.. Thank you. Nice video.
Your video is superb. I am doing a mini project named multi purpose listening device in which i have to do the work which u explain in your video . Bcoz of yours i got a idea how to do
At 3:20 you *don't* need to charge a capacitor. The point is that electret material carries a permanent charge. The power source is needed because there's a FET inside the capsule which buffers the signal and reduces the impedance. The first resistor is the drain load of that FET.
THANK YOU VERY MUCH !!! Clear and Useful information you gave to us.
Very good explanation, will try this as preamp for my guitar.
amazing video! I normally learn hands on but this teaches me just by watching thank you! subscribed. please make more.
Hi,
very nice tutorial, +1. I wannt to ask if you can show us stereo amp with dual these microphone, using PC Line input.
Thank you and Merry Christmas.
you could just make two of these and link the second one to the other pin of the audio jack.
Thanks you for mic knowledge...
Good quality sound recording to pc
thank you man, i can't afford a great quality mic for my videos this helped me to improve my DIY lavalier mic.
that was great man, i learned alot
great video mate and top explanation as to how and why it works :)
I want to use an electret microphone connected to a stethoscope so I can hear the blood flow would you use this preamp to do the job any suggestion would be good thanks
Hey just quick question, do you think we can connect this to a phone instead of a computer's sound card and still get the waveforms?? I installed wavepad, which is like audacity but for phones.
Great video. Enjoyed watching. You must be from Deutschland.
Yoiu are magic. Must watch video for anyone studying anything!!
Please please please tell me how did you calculate values of Resistors (100k and 10k)
Nicely done, excellent explanation!
Really good explaination!
nice project with very good details, thanks!
GREAT vid Bitluni...!!! Want more..👏🏾👏🏾
Im subscribed..🌟💫
Very helpful video. Thank you!
Excellent explanation..!
All my questions has been answered.. Thanks mate,,,
Always check the pin-out on each transistor - Philips Brand has a reversed arrangement. Check your Datasheet to make sure the part matches. Fairchild,Motorola,and most others are the same Philips is the only one that I know for sure that is different.
Excellent presentation!
Is the studio mic with crazy adc out yet? If not, eagerly waiting for it!
Wow... very interesting!!! thanks for sharing
Excelente video, muchas gracias, me has sacado de un gran apuro!!
Nice explanation, i built it with 5532 for active filters
Can you share sheme with filtre mic?
Thanks sir,
Van we use in computer for TH-cam recording , please reply....
is it in the right input impedance for the most sound cards?
Do you think you could do another "Mini Project" about how to build an IR multi touch frame?
Good demonstration.
That's exactly what i search for, thanks
Hi
Being relativly new to electronics i was wondering how you would connect this to a LM836 audio ic with a small headphone set
Kind regards
nice kool! thank you i am a new circutboard guy you are informative thankyou
Men, today i did see your channel and is very interesting the videos, i am from mexico and now i follow you (Y)
Simple and it works. Thanks!
thank you! you are genius!! really appreciated your video, thanks again :)
super useful video...thanks
Hola, muy buen video, pero me ayudarias mucho si me respondes esto: que hago para detectar los sonidos graves (bajos) de la musica a una distancia de 10 metros? estoy tratando de hacer un vumetro y necesito que el microfono sea capaz de detectar el sonido del ambiente a una distancia considerable.
Thanks for your video. Would you help me? What do I need if I put two electric mic?
I replicated this circuit and it worked straight out of the box. My signal to noise ratio wasn't as good as yours though. Is there a way to improve this? Maybe by changing the value of the 100k resistor? Or using 9v instead of 3? Excellent well structured video.
I love that circuit
thank you very much for the explaination of the waveform shifting! i have a question: can i put another stage of amplification or it would have too much noise?
You can, however you could just use a single stage 2 transistor amp. that's a bit more sophisticated.
Another option is to power this circuit from a 9 volt battery instead and that should bring the output up a little.
If you do that, everything can remain the same except for the 100k resistor going from base to collector of the transistor.
Increase that resistor to 680k
@@Dazzwidd Thank You!
Wow, great man! Thank you very much!
Thanks a lot,, was funny... and works with great quality sound...
Excellent video
best explanation....