The reason the sound quality is bad is because the BC547 is a very bad choice for driving a speaker - it has a maximum current of only 100 mA, and the 1k base bias resistor is too low. This resistor should be chosen (maybe 33k - orange, orange, orange) to give the current that the BC547 is capable of handling, probably 50 mA. The BC547 should be replaced with a TIP41, which can handle more current. A power transistor such as the TIP41 needs a heatsink. If the speaker has too much DC current through it, it will be damaged. This person needs to watch a video on the proper way to solder. Those are poor solder joints.
@@acmefixer1how much of a difference would it make if i made it using irfz44n I made it and it sounds okay but too flat. The resistor i used was about 4.7k . And how does the value of resistance between drain and gate affect sound?
I have seen a lot of videos and are great. but have a question that i can't find anywhere. can you make an intercom with 8 telephones? because I can only find them with 2 phones :(. like to hear from you. thanks
I have done. But I get very little amount of output.... Which means I can hear only by keeping the speaker very close to my ears....🙁 What's the problem??
The reason the sound quality is bad is because the BC547 is a very bad choice for driving a speaker - it has a maximum current of only 100 mA, and the 1k base bias resistor is too low. This resistor should be chosen (maybe 33k - orange, orange, orange) to give the current that the BC547 is capable of handling, probably 50 mA. The BC547 should be replaced with a TIP41, which can handle more current. A power transistor such as the TIP41 needs a heatsink.
If the speaker has too much DC current through it, it will be damaged.
This person needs to watch a video on the proper way to solder. Those are poor solder joints.
can I replace the BC547 to a 13003?
@@Iceice69420
The transistor needs to be a power transistor and it should have a heatsink.
@@acmefixer1how much of a difference would it make if i made it using irfz44n I made it and it sounds okay but too flat. The resistor i used was about 4.7k . And how does the value of resistance between drain and gate affect sound?
Mas você fez os testes para saber disso?
Estou ate surpreso por ele saber tanto
I think the speaker in your phone sounds louder than the amplifier you built! ☺
Nice video, thank you for sharing :)
Thank you so much 101 percent working and sound quality also best thanks 👍👍,❤️❤️❤️❤️❤️🤗🤗🤗🤗
Nice 👍
I have seen a lot of videos and are great.
but have a question that i can't find anywhere.
can you make an intercom with 8 telephones?
because I can only find them with 2 phones :(.
like to hear from you.
thanks
Ty u have very useful and practical videos. Tickling our creation 😁😁. Keep it on.... 👍
our?
Nice
What is the output of your battery
I tried it, didn't work
Very nice bahi
Nice, thanks for this video
it's actually working! great education video
I have try it with a BC547B transistor get's hot and get not loud sound do you know the problem?
Tenho duas perguntas para você:
1-Não passa corrente direto para o alto falante?
2-Porque ao modo que o som fica rouco?
it works thank
Its really working
0:08, please tell me what is the red device you have connected directly with the transistor
Very very good thanks
Where can I buy this speaker
Sound quality is something bad
Quality khatap houatai savabik.
Karon eita mainly audio amplifier na🙂
Panal par laga vo
i think capacitor is used here to isolate the phone's audio signal with speaker(audio amp)
don't go over 1watt or it will burn use 1 watt speaker
Sound was clear but sound is very low
Bro oke siya bro
The battery which is rechargeable or not
Rechargeable
I have done.
But I get very little amount of output....
Which means I can hear only by keeping the speaker very close to my ears....🙁
What's the problem??
Maybe you have shorted the audio signal to your speaker
It worked, even mine one is making better sound❤
it really works!!!!!!!!!!!!
This is really work but sound is very low
Same
i increased the resistance and it was too loud😂
Can we join this amplifier to usb panel
Kafi video dekhi or ban bhi gaya pr yar utna clear sound nhi aata hai , bhot ki bekar aawaj aati hai atak atak ke
100nf? Or 1uf
But sound is very low
Kya ye kaam karta hai bhaiyon
We’re is the drawing gggrrrrrr
Bc547 vs2n222
Can we use 100uf 50v capacitor
yes
Sir g esme condenser mic laga kar dikhaiye plz.
Transistor bohot heat hota hai iska koi solulion hai??
How to boost audio
Bhai awaz bahut kam aati hai
Circuit diagram plz
works good but not super powerful.
Hp ku hampir matot gara² ini
Sachame chalu hotahekay
Rutherford Brooks
My speak is 15 w
you can use weaker speaker
Chaz Walk
Mera sea to bana lakin kuchbhinahi awag nahi
Kam nhi kar rahe hai bhai
Too much noisy
Bhi Iska sound or vi jada kaisha kara
5 W De skte he
yes dear