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

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 ;-)

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.

i like the approach of showing each block added to the previous. thank you.

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.

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.

8 years later And still cool! 🤤

I really enjoyed your reasons for selections of the circuit components. Absolutely brilliant!

Nicely explained. One of the few sources that explains what each component in the preamp circuit actually does.

Its always so satisfying to see an amplified signal from mic.

Sounds better in that room with that new mic you put together

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 :)

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.

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.

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.

Fantastic job. I love the way you explain your way through each part of the schematic.

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.

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

Great video. Thank you. I would like to see more about high speed ADCs.

ProTip: ajust the 10k current-limiting resistor to adjust mic sensitivity/output level. Really helps a lot with MSGEQ7 for instance.

THANK YOU ! Clear explanations, clear diagrams, great video! You are an awesome human being ! Thanks for sharing with us :) Lots of Love

That was a great explanation! With the schematics, the oscilloscope... Just awesome. I wish more KZfaq content was like this. Subscribed. Keep it up!

This is great. It's a simple circuit and I haven't heard noises. It's fantastic. Good job man. Congrats!

It is probably the best explanation of this topic in KZfaq

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.

Love the sound fx on 'AMPLIFIED'.

Fabulous explanation. Really enjoyed learning. Thanks for sharing ✨✨✨👍

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 :-)

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.

The best detailed explanation! I'm gonna make one for a Djembae drum recording.

that video makes very clear to understand using a capacitive microphone

I watched meybe 100 videos abaut this topic this is the best one. Thank you.

Excellent. Gradually building the circuit with apt explanation..

What an awesome video with great detailed explanation. Great learning. Thank you for sharing.

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

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!

Very nice presentation! Thanks! I like your posting the circuit diagrams and waveforms!

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.

Thanks you for mic knowledge... Good quality sound recording to pc

You saved me! Thank you so much for such clear instructions! Please keep up this great work.

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

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.

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)!

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.

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...

Great explanation of electronics fundamentals step by step.

Great video. Enjoyed watching. You must be from Deutschland.

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

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.

Really good explaination!

This is exactly what I needed, and is exactly what I wanted to do! Thank you so much for this video

Very good explanation, will try this as preamp for my guitar.

dankeschön. für nen ab&zu-löter wunderbar aufgeschlüsselt.

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.

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.

This circuit works well and easy to add second stage.. Thank you. Nice video.

amazing video! I normally learn hands on but this teaches me just by watching thank you! subscribed. please make more.

THANK YOU VERY MUCH !!! Clear and Useful information you gave to us.

13:08 Finally, a desk messier than mine :) Thanks for this, messing around with electrets for the first time and this is perfect :)

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

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.

Thanks for your video. Would you help me? What do I need if I put two electric mic?

How to remove noise from usb power ?

Good demonstration.

Thanks sir, Van we use in computer for KZfaq recording , please reply....

Very informative I need to build Pre amp microphone for my Icom 720A Ham radio that is obselute

I love that circuit

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.

Excellent video

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.

Everything should be opensource knowladge should be share everywhere. Can we make separate some frequencies for example bass, mids trables with coil?

That's exactly what i search for, thanks

Nicely done, excellent explanation!

great video mate and top explanation as to how and why it works :)

How can we add bass, mid and treble to this mic ?

Please please please tell me how did you calculate values of Resistors (100k and 10k)

is it in the right input impedance for the most sound cards?

best explanation....

nice project with very good details, thanks!

that was great man, i learned alot

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.

A *2N3904* will work just as well.

thank you man, i can't afford a great quality mic for my videos this helped me to improve my DIY lavalier mic.

super useful video...thanks

i am very impressed. i would like to make it. can you plz provide its PCB diagram?

GREAT vid Bitluni...!!! Want more..👏🏾👏🏾 Im subscribed..🌟💫

Can I use my multimeter if I don't have the oscilloscope? Using a 1microfarad capacitor instead, will we get more DC offset at the output?

Does the transistor amplify voltage of current ???!!!

Excellent presentation!

Excelente video, muchas gracias, me has sacado de un gran apuro!!

All my questions has been answered.. Thanks mate,,,

How minaturized can the microphones be produced? Who produces them?

So what is the batteries does? does it work without battery?

Please where can I get the phone jack since I don't have a camera I can get one from

Yoiu are magic. Must watch video for anyone studying anything!!

Is the studio mic with crazy adc out yet? If not, eagerly waiting for it!

Wow... very interesting!!! thanks for sharing

Hey, can you give me a hint where can I tweak this circuit to give it more Umph? I use this as a audio amp stage for a radio project, running on 5 Volts, it sounds Ok, but I have to be close to the mic.. I would need more gain :D