Fm Tansmitter with Adjustable Frequency using a Trimmer Capacitor / fm radio transmitter

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Fm Tansmitter with Adjustable Frequency using a Trimmer Capacitor / fm radio transmitter

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5 жыл бұрын

Fm Tansmitter with Adjustable Frequency using a Trimmer Capacitor / fm radio transmitter
Video link: • Fm Tansmitter with Adj...
circuit diagram 1 albrtech.com/s...
circuit diagram 2 albrtech.com/t...
I was looking for a project to make for fun when i found this FM transmitter, i got curious because it is a best project for fun as well as you tube, it is a simple FM transmitter but i make it it the simplest. I replaced the variable capacitor with a fixed one, re-calculated its frequency to be able to tune it only by the coil instead of the variable capacitor.
This circuit design is unstable because its resonant frequency drifts off if you get your hands close to the antenna or the circuit, the length of the antenna affects the resonant frequency so you should fix it on a fix place so that its frequency remain constant.
Note: It is a very simple transmitter but its range can be 2 km if u attach long antenna with it.
Components Required
R1 : 100ohm resistor
R2 : 4.7 ohms resistor
C1 : 1nF ceramic capacitor
C2 : 47pf ceramic capacitor
Q : bc2655,2n222 or 2N3094
L : 212nH (5 turns of 15 gauge copper wire)
Mic : Condenser mic
Bat : 3v battery and its holder
Ant : Ideally a piece of wire, 1/4 or 1/2 of the wavelength of the frequency if you want more range then use roof antenna and adjust frequency to increase and decrease the space between inducter coil.
#madnimobiles
#electroniccircuit
#Madnimobile

Пікірлер: 56

@creativechannelpro371 5 жыл бұрын

Bro Congratulation you complete you complete 1000 subscribers I am happy with your success bro

@reyhanf7548 2 жыл бұрын

If I Use Trimmer, Can I Adjust The Frequency Of The Fm Transmitter?

@dandwrasan2342 5 жыл бұрын

Fantastic vid and great invention well done 👍🏻🇬🇧

@dandwrasan2342 5 жыл бұрын

MADNI MOBILES your welcome 🙏🏻 I have some questions do you have a email sir

@josephmark4334 3 жыл бұрын

Did it and it is working but the noise is too much. What do I need to do help me I need your answer thanks.

@kalyanboruah4725 4 жыл бұрын

I am using 103uf capacitor can it work

@user-rg3lz2cv8p 3 жыл бұрын

can I use c1815 transister instead of c2655?

@elektronikaelektro8008 3 жыл бұрын

Yes, i try, it works great

@PlayerLost 5 жыл бұрын

Hello, nice video! I have some doubts: 1) Instead of putting a microphone, can I put a p2 connector to connect to my PC? 2) If I want to put an antenna in order to get a wider range, where would I wire the wires? 3) What is the maximum range it transmits? 4) Can I use other transistors? If so, which ones? Sorry for my English, I'm Brazilian and I had to use Google Translate kkkkk

@salimkumar9748 4 жыл бұрын

Thanks

@promilamarandi6746 2 жыл бұрын

Tell me ican pu 4.7 pf capacitor to trimer capacitor

@PlayerLost 5 жыл бұрын

Hello! I was looking for the transistor mentioned in the video on old electronic boards and found these models: (Please tell me which is suitable for this project, using the same circuit as you) - ST9014C - 1346 - 1317 - 3330 - C9015 - C9014 - ST8050C Thanks for listening!

@PlayerLost 5 жыл бұрын

@@MADNIMOBILES I mounted my transmitter, following its tutorial and put a voltage of 5V. I was measuring at the tip of cable p2 and was dialing 4.3V. Will this burn the p2 connector where I plug the cable?

@rejeeshtk6408 4 жыл бұрын

What about BC547 transistor?

@Roboprojectsgillani 5 жыл бұрын

nice video

@ChristopherClaudioSkierka 4 жыл бұрын

Hi, what does the inductor coil do in this build? thanks in advance

@avirupnandy5883 5 жыл бұрын

Which number of copper wire should I use for antenna

@syedjavedalam4450 4 жыл бұрын

You can use 18 gauge

@patrykkosciesza8879 4 жыл бұрын

Hey Madni Mobiles if i use 9V something will happen ? I think it's a bit too much

@tvjeccom980 4 жыл бұрын

Which capacitor can I use instead of 47pf please?

@a-1035 5 жыл бұрын

Bro I made an FM transmitter from your design. After taking a lot of time i finally tuned to that frequency. I used muisc from my DVD player instead of mic. And there was only a hummimg noise. What should I do?

@darkHares 2 жыл бұрын

so the humming noise is from the AC 50Hz powerlines. you need to isolate your circuit with ground to further improve noise cancelation

@lovingrock 4 жыл бұрын

Does this mean you can tune into AM frequencies?

@barneymiller844 5 жыл бұрын

Nice video

@jonathanencabo9506 5 жыл бұрын

Where to connect the three terminals of the.trimmed capacitot please give a clear explanation

@syedjavedalam4450 4 жыл бұрын

Bro the trimmer capacitor has only two functional terminal, the second and the third are interconnected with each other you can use any one from them

@jonathanencabo9506 4 жыл бұрын

thank you sir

@promilamarandi6746 2 жыл бұрын

Please tell can I use bc547 transistor

@tonywright8294 7 ай бұрын

No it’s against the law

@joselocosasrandom1971 3 жыл бұрын

Range

@stevanmapampole6733 5 жыл бұрын

how to increase range to 5km

@mw10259 5 жыл бұрын

@@MADNIMOBILES DOMAIN NAME HAS EXPIRED

@rahulmodi9416 5 жыл бұрын

Circuit Diagram please and can you just show how we can connect all components on breadboard.

@rahulmodi9416 5 жыл бұрын

@@MADNIMOBILES But trimmer capacitor is not included here.

@stephenmusch56 3 жыл бұрын

Doesn't go very far and sounds bad. Also, that 102 capacitor is not a 102pf, it's a .001uf or 1000pf capacitor. It's a 1, a zero followed by 2 more zeros. You might want to practice reading your capacitors before you build a circuit.