Must of you guys here just criticize negatively. I would like to see if some of those dudes who are negative construct and explain something better. This guy is doing something for those who are beginners such as high school students where people that don't have any knowledge of circuit theory and how to polarize a transistor. Those carpers should share and at least to advise and how to improve this. it also misses and preamplifier and active filters to avoid saturation on low frequencies. The concept is perfect and simple. It is a power out stage.
Typically, when one demonstrates how well an amplifier circuit works one builds, they demonstrate how good it sounds. This circuit simply demonstrated that it could drive a speaker's voice coil windings enough to make the cone of the speaker vibrate & bounce assorted objects around. I believe some sound was emitted from the speaker however, it was distorted beyond the point of recognizing if it was music or perhaps grunting noises made by certain animals in the wild.
This would be a 20W sound amplifier if there were no heat losses in the transistors. Considering this is a Sziklai (compound) pair of two Darlington IC's, I think it falls under the AB class amplifier. AB have around 75% efficiency, so one quarter of the total absorbed power would be pure heat. One quarter of 20 is 5, so 5W (or more) are dissipated into that heatsink as heat. A 15W amplifier with two Darlington transistors is still okay, mind you. Great job!
@@EricFontaineJazz assuming his understanding and assessment of the parts is correct, he gets 20w after subtracting the theoretical thermal energy wasted from traveling thru the circuit.
You are seriously connecting a +12v input directly into a speaker? Notice as soon as you applied power, the cone popped straight out? That should have been your 1st hint that it is a bad circuit. Any 1st year electronics student can tell you that speakers are AC output devices. You don't plug DC directly into them. That's what burns out voice coils. Audio amplifiers take an AC Signal input and, converts it to a stronger AC output signal. DC is used to power the amplifier. Not amplify an audio signal. Audio is an AC, Amplitude modulated signal. Distortion is caused by an over modulated audio signal injecting square wave DC into the audio. That's what fries voice coils. If anything, you have created a voltage amplifier. NOT an audio amplifier. Also, 100 watts. Not with that circuit. My advice to you is go back to a 1st year electronic course book and learn how to design a proper circuit before some beginner uses your video and then blows an expensive set of speakers or, worse yet, causes a fire. What you have shown here is a potential for, at best, lost money. At worse? you could kill somebody in a fire. Shame on you.
I test the circuit on LTspice, and it works. But it is a class C amp, only half wave above 0V got amplify, and signal below 0V is all flat, kind shiity in audio application .
The speaker sees 6 volts with zero signal. This is a class "A" amplifier, the 2 transistors are connected in a "Darlington" circuit, with the TIP 122 serving as the input stage, The TIP 127 is the output stage. The problem is, the speaker coil dissipates 9 watts, if it's a 4Ω speaker, 4.5 watts, if it's 8Ω.(no signal)
What a brilliant design. Using darlington pair with current gain of 1000. Feeding the circuit with a 0.1Watt music source, x1000 times, you get a ball-park of 120 watts. What you get is, with 12 volt supply, the high gain of a small sine wave got magnified and clamped at 12 volt and became a square wave, makes it sound shitty. The output of the circuit has a AC and a DC component. You are effectively making a degauss circuit for demagnetizing your speaker.
12V applied across a speaker CAN NOT dissipate 100W of energy. 12V across a 4ohm speaker will dissipate 36W, 12V across a 8ohm speaker will dissipate 18W.
The video title is very misleading because speaker impedance tends to not be less than 4 ohm. But the equation Power = (Voltage ^ 2) / Impedance does have a solution for 100 W peak power across 12 V if the impedance is 1.44 ohms. I just did a web search and see there are car speakers that are 2 ohm (which according to the equation could dissipate 72 W peak power with 12 V) and even 1 ohm (which according to the equation could dissipate 144 W peak power with 12 V). Of course that is peak power (not RMS) and isn't accounting for other issues, such as the limitation (according to the datasheet for the TIP 122 and TIP 127) that the absolute max rating for these transistor's collector current is 5 A and a peak of 8 A.
and there are other power losses such as in the transistors, and some one in the comments below is saying that since this is a class AB amp, it can only have 75% efficiency too.
So many hate comments but those those haters can't even make thier own and post it on youtube so that we have a comparison about thier work that suits on thier expert level opinions. If it's wrong then please make your version and post it here.
One needn't make something to recognize how flawed this one is. It is a waste of everyone's time who watches this, and highly irresponsible to claim, however incredibly, that it is in any way an audio amp.
Not a recommended amplifier design when the cone of your speaker pips out when power is applied. That means it's getting DC voltage and potentially burning the voice coil.
Hello friend, greetings from the United Mexican States, I wanted to ask you if you connected it to any source of power, I wanted to know or tell me clearly, that in your video it does not look like you connect it, I did not understand well, your video is good
the best video so far easy to get parts and build unlike some other videos using parts that isn't available at jaycar electronics and altronics in western Australia, Australia except the tip27 dam it and after reading the comments this circuit has errors maybe its using the wrong speaker maybe it needs an 8 ohms one
With a voltage of 12v it is impossible to get 100e over 4 ohm. Don't you know Ohm's law? Well, before giving electronic lessons, you should know it since it is the basic law of electricity.
With that simple configuration I would agree 100watts is not realistic however if the 12volt source has allot of current like a car battery it is obtainable.
4 роки тому+1
That’s true, he could be using a computer or Xbox power supply for more current to power 100 watt at 4 ohm.
@Robio Weeks 100W is perfectly attainable from a 12V source (like a car battery). But not to a 4 ohm load. At a maximum (which would be pure DC), you could get 36W from 12V into a 4 ohm load. The minute you start to generate waveforms (which will lower the RMS voltage from pure DC), this figure decreases further. Put in another way, in order to get 100W into 4 ohms with a pure DC voltage, you need 20V. Make that a sine wave, and you now need a voltage source with an amplitude of 28.2V. Oh, and that’s into a pure resistive load.
No, it is not. UNLESS. you put the +12VDC through a DC-DC switching power supply which boosts the +12VDC to at least +/-40-45VDC. Only then can you get 100W into 8Ω. 200W into 4Ω. Not trying to kill the creativity here, just want to point out the reality.
Guess that explains why I here is different amps with varying quality got four or five different "pros" telling us how to get it done right Lol Guessing this is the low end scale of the quality
As an experiment is fine, I would have to put filters to see how much it really performs, possible 8w, for that I would better use a TDA2003 that if it would give a better sound
We can all bitch about everything wrong in this video but the fact is that this guy is showing us just the principle of a little circuit. Eventhough his standards for "Awesome sound quality" is a bit off.
It sounds just fine for what it is. Its a bass speaker that is not in proper box, putting out bass only as there is no mid range or highs so you hear no voice. In the right speaker box with a high speaker to create some voice the bass would sound fine.
@@bryang9601 thats the real amp, sounds like trash just like the plans would. The red speaker wire is going along with the black dc- wire to the ground at power supply most likely
Don't criticize him for his wire colors--criticize him for showing a project that's completely useless at best, and very likely a waste of time, a speaker and perfectly good components.
Because red wires can handle more power and black wires are only for small signals ( don't you know the "Colors Law for Applied Electronics" It is the most important law in modern physics . hahahahahahahaha
It doesn't matter if he's lying or not. This is UA-cam. You can say any shit and show any shit and people will watch and you can make money. And there's nothing anyone can do about it because UA-cam is making money off of it too and they don't give a shit if it's true or not. So enjoy everyone and send them your money.
This is stupid. Not only that principal scheme never work but even if it would the rms power formula for amp is (U/2 )^2 / 2Rs = (12/2)^2 / 4*2 = 4.5w (assuming that speaker resistance = 4Ohms) This value is maximum possible.
Your explanation is excellent, simplified, and very nice. Keep it up, Bechmhands engineer. We support you. Can I have a simple request? I have a 4 ohm headphone, 100 to 600 wat, 5 volt.What amplifiers and resistance value do I need?
I made this project and it works but to much distortion the sound not so clear when i tried it..Pls advice what is lacking..thank you in advance Sir..GOD BLESS more power..
The sound is not good... because it’s not a subwoofer amplifier and he connected a subwoofer. I tested with a HI-FI speaker and it sounds good! I have an idea with this amplifier... replace the speaker by a 33ohm 50W resistor, and at resistor pins you have the output. Connect speaker in series with a 6800uf capacitor and it works better! Then it won’t destroy the speaker! The resistor will heat, but if it is a 50W resistor you don’t need heat sink! Power this with 6 to 36V! You can also power it with 48V but you have to replace the 150K resistor by a 220K resistor!
Must of you guys here just criticize negatively. I would like to see if some of those dudes who are negative construct and explain something better. This guy is doing something for those who are beginners such as high school students where people that don't have any knowledge of circuit theory and how to polarize a transistor. Those carpers should share and at least to advise and how to improve this. it also misses and preamplifier and active filters to avoid saturation on low frequencies. The concept is perfect and simple. It is a power out stage.
thanks
I totally agree. We should encourage beginners
I also totally agree with you
Because I am also a beginner
Bahut badiya bhai,
Typically, when one demonstrates how well an amplifier circuit works one builds, they demonstrate how good it sounds. This circuit simply demonstrated that it could drive a speaker's voice coil windings enough to make the cone of the speaker vibrate & bounce assorted objects around. I believe some sound was emitted from the speaker however, it was distorted beyond the point of recognizing if it was music or perhaps grunting noises made by certain animals in the wild.
but the heavy sound is what makes it fun
nice idea dear friend
thanks
This would be a 20W sound amplifier if there were no heat losses in the transistors.
Considering this is a Sziklai (compound) pair of two Darlington IC's, I think it falls under the AB class amplifier. AB have around 75% efficiency, so one quarter of the total absorbed power would be pure heat. One quarter of 20 is 5, so 5W (or more) are dissipated into that heatsink as heat.
A 15W amplifier with two Darlington transistors is still okay, mind you.
Great job!
👍✅ Your analysis is very good
Where does your starting 20 W number come from?
@@EricFontaineJazz assuming his understanding and assessment of the parts is correct, he gets 20w after subtracting the theoretical thermal energy wasted from traveling thru the circuit.
good idea
Saman uchkane ki mashin👌👌👌👌👌
great work brother
Thanks ✌️
The world would be so wonderful place, if this amplifier had 100W... :-)
Angry Student , ага! 100W он из 12 Вольт решил добыть, да еще на двух транзисторах!Сказочник))))
Такое возможно только в России!))))
Loved your comnt angry student
Speaker is 8 oum or what
The explanation about the conductors and capcititors and how to connect is to be explained while doing is more effective and useful
😁🅰🅰😁😁😁😁😁
🅰😁😁🅰😁😁🅰😁
🅰🅰🅰🅰😁🅰🅰🅰
🅰😁😁🅰😁😁🅰😁
🅰😁😁🅰😁😁😁4 Wo
This thing WORKED... Prior I thought it is trash but when I made it it worked 100 percent... THANKS DUDE
congratulation, 😘
500K resistor VS 50V DC 😮 power supply to speaker booster 500W 2x 13003 transistor amplifier 😅 power high 😂😂❤
Boht powerful board bnaya tha orr bhi components the usme Apne 3 ic ka use kia tha orr capistor bhi brda use kia tha 1000 + uf tha usmai
You are seriously connecting a +12v input directly into a speaker? Notice as soon as you applied power, the cone popped straight out? That should have been your 1st hint that it is a bad circuit. Any 1st year electronics student can tell you that speakers are AC output devices. You don't plug DC directly into them. That's what burns out voice coils. Audio amplifiers take an AC Signal input and, converts it to a stronger AC output signal. DC is used to power the amplifier. Not amplify an audio signal. Audio is an AC, Amplitude modulated signal. Distortion is caused by an over modulated audio signal injecting square wave DC into the audio. That's what fries voice coils. If anything, you have created a voltage amplifier. NOT an audio amplifier. Also, 100 watts. Not with that circuit. My advice to you is go back to a 1st year electronic course book and learn how to design a proper circuit before some beginner uses your video and then blows an expensive set of speakers or, worse yet, causes a fire. What you have shown here is a potential for, at best, lost money. At worse? you could kill somebody in a fire. Shame on you.
Nah! first things 1) cutting finger nails
2) wash hands
But that's not the way this particular circuit works
I test the circuit on LTspice, and it works. But it is a class C amp, only half wave above 0V got amplify, and signal below 0V is all flat, kind shiity in audio application
.
The speaker sees 6 volts with zero signal. This is a class "A" amplifier, the 2 transistors are connected in a "Darlington" circuit, with the TIP 122 serving as the input stage, The TIP 127 is the output stage. The problem is, the speaker coil dissipates 9 watts, if it's a 4Ω speaker, 4.5 watts, if it's 8Ω.(no signal)
垃圾视频！
Very good and useful video, I'm a loyal fan waiting for the next video, always successful
Glad to hear that,,,,
thanks a lot
What a brilliant design. Using darlington pair with current gain of 1000.
Feeding the circuit with a 0.1Watt music source, x1000 times, you get a ball-park of 120 watts.
What you get is, with 12 volt supply, the high gain of a small sine wave got magnified and clamped at 12 volt
and became a square wave, makes it sound shitty.
The output of the circuit has a AC and a DC component. You are effectively making a degauss circuit for demagnetizing your
speaker.
Muy buen video.Lo intentar'e.Bendiciones.Muchas gracias.Horacio.Cali.Colombia.
thanks a lot
12V applied across a speaker CAN NOT dissipate 100W of energy.
12V across a 4ohm speaker will dissipate 36W, 12V across a 8ohm speaker will dissipate 18W.
The video title is very misleading because speaker impedance tends to not be less than 4 ohm. But the equation
Power = (Voltage ^ 2) / Impedance
does have a solution for 100 W peak power across 12 V if the impedance is 1.44 ohms. I just did a web search and see there are car speakers that are 2 ohm (which according to the equation could dissipate 72 W peak power with 12 V) and even 1 ohm (which according to the equation could dissipate 144 W peak power with 12 V).
Of course that is peak power (not RMS) and isn't accounting for other issues, such as the limitation (according to the datasheet for the TIP 122 and TIP 127) that the absolute max rating for these transistor's collector current is 5 A and a peak of 8 A.
and there are other power losses such as in the transistors, and some one in the comments below is saying that since this is a class AB amp, it can only have 75% efficiency too.
Good job
muy bueno el circuito del amplificador pero no se vio como se alimenta de voltaje
Thanks for share
My pleasure
of course I will try to do it I will hope that it will work
sure
So many hate comments but those those haters can't even make thier own and post it on youtube so that we have a comparison about thier work that suits on thier expert level opinions.
If it's wrong then please make your version and post it here.
thanks, bro,,,😘
One needn't make something to recognize how flawed this one is. It is a waste of everyone's time who watches this, and highly irresponsible to claim, however incredibly, that it is in any way an audio amp.
Not a recommended amplifier design when the cone of your speaker pips out when power is applied. That means it's getting DC voltage and potentially burning the voice coil.
Its already burned i can fell the distortion
Then what 12v dc amplifier would you recommend I really need it
hello thank you bro
Welcome 👍
Hello friend, greetings from the United Mexican States, I wanted to ask you if you connected it to any source of power, I wanted to know or tell me clearly, that in your video it does not look like you connect it, I did not understand well, your video is good
I will try it now.
Legal porque ele da detalhes de cada componente , valeu!
the best video so far easy to get parts and build unlike some other videos using parts that isn't available at jaycar electronics and altronics in western Australia, Australia except the tip27 dam it and after reading the comments this circuit has errors maybe its using the wrong speaker maybe it needs an 8 ohms one
I like that you wrote exactly what you were doing it was very helpful most of these videos they do it so fast and looks like they skip steps thanks
thanks a lot,,,
Superb
Thank you! Cheers!
Está bueno al escucharlo ringtones,cuando lo separeste de la mesa la bocina se a claro.angel de nicaragua
felisidades quedo muy bueno ya lo hice y esta muy bueno
Is that plumbing solder paste you are applying to the joints before soldering? It's not an amplifier, it's a noise maker ......
Jossss😁
With a voltage of 12v it is impossible to get 100e over 4 ohm. Don't you know Ohm's law? Well, before giving electronic lessons, you should know it since it is the basic law of electricity.
With that simple configuration I would agree 100watts is not realistic however if the 12volt source has allot of current like a car battery it is obtainable.
That’s true, he could be using a computer or Xbox power supply for more current to power 100 watt at 4 ohm.
@Robio Weeks
100W is perfectly attainable from a 12V source (like a car battery). But not to a 4 ohm load. At a maximum (which would be pure DC), you could get 36W from 12V into a 4 ohm load. The minute you start to generate waveforms (which will lower the RMS voltage from pure DC), this figure decreases further. Put in another way, in order to get 100W into 4 ohms with a pure DC voltage, you need 20V. Make that a sine wave, and you now need a voltage source with an amplitude of 28.2V. Oh, and that’s into a pure resistive load.
No, it is not. UNLESS. you put the +12VDC through a DC-DC switching power supply which boosts the +12VDC to at least +/-40-45VDC. Only then can you get 100W into 8Ω. 200W into 4Ω. Not trying to kill the creativity here, just want to point out the reality.
Guess that explains why I here is different amps with varying quality got four or five different "pros" telling us how to get it done right
Lol
Guessing this is the low end scale of the quality
The fly seems to like your music, then, it has to be a good project !!
As an experiment is fine, I would have to put filters to see how much it really performs, possible 8w, for that I would better use a TDA2003 that if it would give a better sound
THANK YOU SO MUCH
Glad it helped
Eu tenho uma fonte de 18 volts, tem algum problema usá-lo neste amplificador?
Wowww great job
great amplifier circuit
Pretty good stuff
what speaker resistances can you use this amplifier at? and what is the max voltage you can put into this cct?
Super bro
oh my God where the power supply?
your'e just dreaming...
ayos galing mo boss
THD100% ;D
Wasn't meant for audio, it's an object shaker, as demonstrated.
👍 super❤️
thanks
"How to to make a very poor highly distorted amplifier"
Nah it sounds like the speaker is badly blown and damaged
Klingt abscheulich. Wäre mal interessant wie der Verstärker verzerrt (Oszilloskop)
200 prozent
Super. Ovoru sparelayum price pota Innum nallairukum. I THANK YOU
👍👍👍 mantaaaaf...😍😍😍😍
SERIA BUENO CREAR UN DIAGRAMA PARA SER MAS CLARO
Super super super super super fantastic
Thank you so much
He takana binabattery re challibakie
no
Good job 👍
This amp can reach max 10 watts 😂😂 Not 100w
Very nice amflair
So nice
MUY BIEN
Nice video
Все красиво, кроме звучания!
звучание и должно фонить
а как он должен звучать если это низкочастотник и вдобавок без короба
Затея не плохая, но мне кажется проще купить уж на полкиловата
Динамик открыт, отсюда такое звук. А подключить колонку, будет супер-звук.
@@СергейПетров-м9н не уверен, питание слабое,нужно минемум для 100 вт хотяб 32вольта
The Internet: The home of poor designs.
Muy bueno para aprender
Muy bueno, simple y efectivo
Muy bueno
why are you putting things on the speaker then the speaker will distort ,we are here for the sound quality!
Because he wants to hide the extremely high distortion.
It is so. Power ful
"awesome sound quality"
speaker proceeds to make farting sounds
loooool
Молодец продолжай так же! Лайк
"Awesome sound quality" *literally shitting-self*
1minutes nice working Heavy Heat Sound problem
We can all bitch about everything wrong in this video but the fact is that this guy is showing us just the principle of a little circuit. Eventhough his standards for "Awesome sound quality" is a bit off.
It sounds just fine for what it is.
Its a bass speaker that is not in proper box, putting out bass only as there is no mid range or highs so you hear no voice.
In the right speaker box with a high speaker to create some voice the bass would sound fine.
Why does the speaker have 2 red wires but the amp has a black and red wire
@@bryang9601 thats the real amp, sounds like trash just like the plans would. The red speaker wire is going along with the black dc- wire to the ground at power supply most likely
Don't criticize him for his wire colors--criticize him for showing a project that's completely useless at best, and very likely a waste of time, a speaker and perfectly good components.
Because red wires can handle more power and black wires are only for small signals ( don't you know the "Colors Law for Applied Electronics" It is the most important law in modern physics . hahahahahahahaha
It doesn't matter if he's lying or not. This is UA-cam. You can say any shit and show any shit and people will watch and you can make money. And there's nothing anyone can do about it because UA-cam is making money off of it too and they don't give a shit if it's true or not. So enjoy everyone and send them your money.
Только я что-ли заметил, что винты поставил без изоляции, тем самым соединил оба коллектора
Пересмотрев видео, обратите внимание что на сами винты уже одета изоляция
Нет, винты на изоляторах, смотри внимательно. То что 2 винта на коллекторе, ничего не значит, они не прикасаются к транзисторам!
Видно глаза нарисованы на голове))
Кепку сними блядь.
आपने जो स्पीकर बनाया है यह आपने बैटरी में लगाया या फिर बोर्ड में
DC -12v positive cable with speaker
आप मुझे एक बार यह बता दो क्या आपने बैटरी में लगाया था या फिर बोर्ड से चलाया था
Olá meu caro, tem como fazer um amplificador de 5000 w
nice project
Thanks
OH GREAT YOU MADE A MINI TRAMPOLINE
This is stupid. Not only that principal scheme never work but even if it would the rms power formula for amp is (U/2 )^2 / 2Rs = (12/2)^2 / 4*2 = 4.5w (assuming that speaker resistance = 4Ohms)
This value is maximum possible.
kkkkkkkkkk
Fuck man go in your ass someself.
Nice performance
The only thing missing is the Flux Capacitor to really get those Bass vibes.
Flux capacitors are only suitable for high frequencies--no good for bass.
Nice video bro
thanks a lot
Very low quality distorted sounds
Yeah, that's the beauty of DC output; essentially clipping half the signal's wave form.
should be ok for rap music then............. :P
Perfect for the rock & roll genre
Shinu Varghese
It's sounds really baaad
Nice n easy amp ... Can work truly...? Very good... I try later if work then ..I make stereo amp ... Thanks 👍😀😀😀
12v ok 1 amp or 2 am
we need one that does not output DC for Speaker Because Speakers hate DC and it ruins the Voice Coil in Them
Yup
Yeah, putting any form of dc power can fuck up you're speajee. But if he want untangled and burnt coils nkt my problem hehe
Gostei do amplificador é muito bom ok professor, Fais um amplificador com 2 transistos tipo 127 ok
Your explanation is excellent, simplified, and very nice. Keep it up, Bechmhands engineer. We support you. Can I have a simple request? I have a 4 ohm headphone, 100 to 600 wat, 5 volt.What amplifiers and resistance value do I need?
ভালো
Действительно 12Вт. Из википедии. Но простота усилка удивляет...
Кидалово удивляет
That bass sounds AWESOME! I'm gonna put this in my car and cruise the neighborhood!
If you don't want to fry your speaker you must add a capacitor on the input of the speaker in order to eliminate the constant dc voltage.
ok
GggFu
I made this project and it works but to much distortion the sound not so clear when i tried it..Pls advice what is lacking..thank you in advance Sir..GOD BLESS more power..
do you make same connection ?
Thank you. I just have 2 questions. What Ohm speaker can it take and what Amp max 12v power supply can be used?
please use a fuse if you are using high Ah battery
Can we use irfz44n and irp3205
sure
The better way to destroy a loudspeaker... 🤦🏻♂️
The sound is not good... because it’s not a subwoofer amplifier and he connected a subwoofer. I tested with a HI-FI speaker and it sounds good! I have an idea with this amplifier... replace the speaker by a 33ohm 50W resistor, and at resistor pins you have the output. Connect speaker in series with a 6800uf capacitor and it works better! Then it won’t destroy the speaker! The resistor will heat, but if it is a 50W resistor you don’t need heat sink! Power this with 6 to 36V! You can also power it with 48V but you have to replace the 150K resistor by a 220K resistor!
On your audio input where is the right or left channel hook up or are you not using the ground off the phone
It is 50w-50w amplifier