Thank you. I’m installing an Alumitone pickup and an electret condenser in my acoustic guitar. This is all I needed to know. I love the harp playing ! Tikata Tikata Chookata.
Thanks a lot. I got success in connecting my mobile earphone with a mixer. Can I get more clear n cryspy voice output by changing the value of capacitor or resistor
The positive side of the 1uF capacitor should be connected to the positive side of the microphone, but your drawing shows exactly the opposite. In other words, your capacitor is short-circuited because the negative side of the capacitor is connected to the positive side of the battery.
I have a 3 lead electret element that I want to use with a phantom power audio interface. I simply used the center lead on the element to positive, and one of the casing leads to the negative, then plugged the cable into the audio interface? I'm not hearing anything when I did this...what am I doing wrong? Thanks!
I apologise for I don't know. I've never used the three wire type. There are lots of posts on electret mics here on RU-vid, maybe one of those will explain. Sorry.
You have to connect ground to source and in that way you end up with 2 wires. But in this way you can't connect the electret to phantom power: you have to bring down the power (48V) considerably.
Hi there, i am trying to make the same for my headset's microphone in hope of removing the background noise.Unfortunately i haven't been able to make it work yet.The microphone works on it's own just connected with the 3.5mm jack.Is this circuit applicable for my situation?I am pretty sure it's the same as with yours.Thanks
Hello again John. Just watched a video by a kid called potatogun96, He builds an electret mic using a 2.2k resistor like mine and a 104 capacitor( mine is 105). He hooks this up to a 9v battery and says the resistor cuts the voltage to 3v,which is right for the mic. The leaflet with mine says 3v even though it only holds one AA battery,so why would it even need a resistor if the voltage of the batteries is 3v or less.
It really depends on the make and Spec of the mic DuendeDude. If you drive too much power into your amp you may get problems. Seems to me you may want to consider a pre-amplifier if your main amplifier isn't throwing out enough volume. If you bypassed the 2.2k resistor, the battery life would be very short and may cause a lot of distortion. Try it and see.
I have bought an electret mic to amplify flamenco guitar. It has a 1/4' adapter containing an AA battery (11/2v) with 2.2k resistor(i think). If I modify it to 2 batteries/3v, will it damage the resistor, and will it increase performance/quality. Thanks for the video,and being, a musician myself, i enjoyed your harp playing.
DuendeDude I wouldn't want to be responsible for advising you badly but I doubt it would make a great deal of difference apart from maybe increasing the output of the mic which may cause a bit of distortion. It shouldn't do any harm to try it for a short while. I use 3v with a range of different of electret mics and had no problems. I can't be held responsible for any damage that may be caused to your equipment but I would certainly try it. You may find changing the value of the resistor will make a difference too.
Thanks John. Of course I will try it as is first and If I am happy leave it at that.I 'm not looking for high volume so can just crank the amp up or use my EQ pedal to boost the signal. It's just that I saw a video where a guy said that the sound quality of electret mics was greatly improved by increased voltage.Thanks for your prompt reply and again,love that harp.
DuendeDude Thanks DuendeDude. Those mics are very sensitive and can pick up a mosquito fart from 100 yards. Let me know how you get on I'd be interested to know. I also play ukulele and often play with a small electret in the body and it sounds great.
After initial tests to find the sweet spot i intend to fit the mic inside the guitar and connect to the end pin jack. I have used DIY sound board transducers which aren't too bad but I can't stand the sound of under saddle pick ups.( Why are they standard in most very expensive acoustic electrics).All we want is to get as close to the natural acoustic sound as possible. I'm hoping the mic will be a step in that direction.I will let you know how it goes .
hello there John!! i have seen your video, but my friend still has a nagging doubt- what if i just connect the electret microphone to an oscilloscope, and then clap, will the oscilloscope still show any sound input (without any supply voltage connected to the microphone)? basically, does the microphone NEED an external supply?
I think you'll need to experiment and try it Pranay BHARDWAJ You may get a tiny response on the oscilloscope but yes the mic does need an external supply.
ok i have got most of the components but im having trouble locating the mildew covered pork sausage do you know any reputable outlets and what function does the unit serve ?
Great video, would I change the resistor, or could I change the resistor to use a single 1.5V AA battery in turn keeping the size of the unit down? Would i double or reduce the size of the resistor to use half the power?
Thanks Crackerman. The amount of current it uses would be tiny so I wouldn't bother with that but if you do want to reduce the power, you'd need to experiment as each electret mic would be slightly different.
hi....very nice video...some doubts though . I read somewhere that the capacitor is used to eliminate any dc output as we want ac output only , how does that happen ? Also if wanted to get input into my arduino board , could i connect the tip to A0 pin and ring to ground ? -thanks
Thanks, John. I want to use your circuit to power the 2 speakers on a computer headset from its mike. No computer involved. This setup could be used to practice singing. Would your circuit drive the speakers?
Hi Ron, without know your speakers I'm not entirely sure. Some of those computer speakers have amplifiers built in. It wouldn't hurt to try. It's so cheap and you can't harm anything if it doesn't work. Good Luck.
I want to power a BM 800 Condenser mic with a battery too, it says that I need a Phantom power that supplies 48V. I have researched around and some have done it with a 9V battery, but I just want to know what you think about it. Like what kind of resistor I should use and capacitor. Any help will do, thanks.
I followed exactly as described, I even payed attention to the inverted cap part, used a 1uf cap, 1k resistor, 3 volts with two AAA batteries, didn't work for me.
It's so simple Leon, I can't see how it doesn't work unless the components are faulty, dead batteries or break in a wire. There's no short circuit in the jack plug is there? Please let me know what the problem was if you get it fixed?
If you're using the MIC jack input socket for a PC, many PC's are already equipped with a Phantom Power Supply which is what the 3v Battery, capacitor and resistor do. I've only connected up to an amplifier so don't know what would happen with a PC. You may want to try using the mic without the components? Also PC mics are normally mono (except USB Mics) so the stereo jack should be OK so long as you connect both the rings together?
Question: I received an element with no leads, and one with leads. What looks like the ground wire is stranded metal. What could happen if I use solid copper instead?
This was a lot of help thank you. I have it working perfectly when powered by a battery. How can I go about filtering the noise caused by powering the mic with usb?
Seth Patchett try to connect a 10uF electrolitic capacitor across the USB VCC and GND, ( capacitor '+' lead to VCC and capacitor '-' lead also marked, to GND ) google USB pinouts
i connected it exactly as shown in the circuit directly to audio amplifier both with independent and common power supply and all it does is pull up the voltage of one pin to + trough the resistor and the amplifier just tries to burn my speaker with dc and the mic is as if its not there
I soldered a socket so i could quick swap mics and i tested 2 mics. Both didn't work. I didn't want to test the 3rd one in case it turns out the circuit burns them
That's strange, it's such a simple circuit it's hard to know why it doesn't work. Is the capacitor you are using OK? Can you swap that out and try another? Are the connections to the jack plugs OK? Sometimes too much heat on the jack plugs when soldering can cause them to short.
everything is solder connections except the mics that i put in socket. i tried both 10mf electrolytic and some film capacitor ( the largest one i could find but still similar to what most people are using). i will go to a friend's house and use his oscilloscope to see wtf is going on and will reply you if i find out what the problem is
I've tried to repair an electret mic using the diagram you illustrated but a resistor of 10k ohms and a capacitor of 10 microfarad with 25v rated. Sounds looks ok, but I'm not sure it is right.
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