Hello to All . hand26
Yesterday when answering a topical forum here , I got doubt in calculating and went looking for the correct data for the calculation of power . : blink :
I found these articles posted on the site Bravox , and as it is a subject that almost every day there is someone asking about it , I decided to share with you .
http://www.bravox.com.br/textostecnicos_influenciadaimpedancia.asp
The first arises on the calculating the resulting power on each speaker.
The second shows the calculation of power in speakers with coils Doubles dferentes and their associations .
*****
****1 - INFLUENCE OF IMPEDANCE SPEAKER IN POWER AMPLIFIER . : +1
How we use the speakers may result in gains or losses of a power amplifier. A power gain can be achieved through a low impedance . So we can better explain what happens , let's check this example , where we have the following equipment :
1 speaker with an impedance of 2 ohms
1 speaker with an impedance of 4 ohms
1 speaker with an impedance of 8 ohms
1 channel amplifier with an output of 100 Wrms at 4 Ohms
To analyze the different ways in which the amplifier will work , we use the following formulas :
P = T ² / ZP IP x = T = I ² x Z
P = Power ( Watts )
T = Voltage ( Volts )
I = Current ( Amperes )
Z = Impedance ( Ohms )
First we must calculate the value of the output voltage of this amplifier , so we can check the different power values presented by the amplifier according to the impedance we have on output. : cool :
The manufacturer of this amplifier provides us the information that we have 100 Wrms when we use an impedance of 4 ohms on the output. Playing these data in the first formula we have:
T ² = 100 / 4
T ² = 100 x 4 = 400
T = 20 Volts
As the value of the output voltage of the amplifier is constant and we have already calculated , we can find the different power values for each value of impedance :
To the speaker with an impedance of 4 Ohms
P = ( 20x20 ) / 4 = 400 /4 = 100 Wrms
To the speaker with an impedance of 2 Ohms
P = ( 20x20 ) / 2 = 400 /2 = 200 Wrms
To the speaker with an impedance of 8 Ohms
P = ( 20x20 ) / 8 = 400/8 = 50 Wrms
With this, we reach the conclusion that as we decrease the impedance , the amplifier automatically increases its potency .
On the other hand there is a limit , which is exactly the point where it can cause burning of an amplifier . This is why we do to lessen the impedance that the amplifier provides maximum power , resulting in high values of current at the output of the amplifier .
To properly use what equipment the tip is always check the minimum impedance amplifier output ( stereo and bridge ) and the impedance of each speaker, thus avoiding future problems .
Calculo de potencia nos Autofalantes e Amplificador- Exemplo de como c - [ELÉTRICA] ELETRÔNICA e ASSISTÊNCIA - AutoForum.com.br
Yesterday when answering a topical forum here , I got doubt in calculating and went looking for the correct data for the calculation of power . : blink :
I found these articles posted on the site Bravox , and as it is a subject that almost every day there is someone asking about it , I decided to share with you .
http://www.bravox.com.br/textostecnicos_influenciadaimpedancia.asp
The first arises on the calculating the resulting power on each speaker.
The second shows the calculation of power in speakers with coils Doubles dferentes and their associations .
*****
****1 - INFLUENCE OF IMPEDANCE SPEAKER IN POWER AMPLIFIER . : +1
How we use the speakers may result in gains or losses of a power amplifier. A power gain can be achieved through a low impedance . So we can better explain what happens , let's check this example , where we have the following equipment :
1 speaker with an impedance of 2 ohms
1 speaker with an impedance of 4 ohms
1 speaker with an impedance of 8 ohms
1 channel amplifier with an output of 100 Wrms at 4 Ohms
To analyze the different ways in which the amplifier will work , we use the following formulas :
P = T ² / ZP IP x = T = I ² x Z
P = Power ( Watts )
T = Voltage ( Volts )
I = Current ( Amperes )
Z = Impedance ( Ohms )
First we must calculate the value of the output voltage of this amplifier , so we can check the different power values presented by the amplifier according to the impedance we have on output. : cool :
The manufacturer of this amplifier provides us the information that we have 100 Wrms when we use an impedance of 4 ohms on the output. Playing these data in the first formula we have:
T ² = 100 / 4
T ² = 100 x 4 = 400
T = 20 Volts
As the value of the output voltage of the amplifier is constant and we have already calculated , we can find the different power values for each value of impedance :
To the speaker with an impedance of 4 Ohms
P = ( 20x20 ) / 4 = 400 /4 = 100 Wrms
To the speaker with an impedance of 2 Ohms
P = ( 20x20 ) / 2 = 400 /2 = 200 Wrms
To the speaker with an impedance of 8 Ohms
P = ( 20x20 ) / 8 = 400/8 = 50 Wrms
With this, we reach the conclusion that as we decrease the impedance , the amplifier automatically increases its potency .
On the other hand there is a limit , which is exactly the point where it can cause burning of an amplifier . This is why we do to lessen the impedance that the amplifier provides maximum power , resulting in high values of current at the output of the amplifier .
To properly use what equipment the tip is always check the minimum impedance amplifier output ( stereo and bridge ) and the impedance of each speaker, thus avoiding future problems .
Calculo de potencia nos Autofalantes e Amplificador- Exemplo de como c - [ELÉTRICA] ELETRÔNICA e ASSISTÊNCIA - AutoForum.com.br
Hello gentlemen.
I rode the Debunker, and now I'm doing tests with it.
I was reading the previous pots, and tryna understand ... wondered why this amp could not use power 70 +70 with a load of 4 homs? Compared to this scheme http://www.electronica-pt.com/esque...k,34349050fc9e9c26ecbc777dada807c7/no_html,1/ which is an amplifier 750w 4 ohms.e its open source gives 92 +92?
Perez.
I rode the Debunker, and now I'm doing tests with it.
I was reading the previous pots, and tryna understand ... wondered why this amp could not use power 70 +70 with a load of 4 homs? Compared to this scheme http://www.electronica-pt.com/esque...k,34349050fc9e9c26ecbc777dada807c7/no_html,1/ which is an amplifier 750w 4 ohms.e its open source gives 92 +92?
Perez.
Good evening friend!
Good to ...
As I said earlier, I know very well what I am posting here. The friend PEREZ who posted just above is performing some tests, will record video and post it here in order to put an end once and for all with all this babble of half a dozen "engineers" ...
I am available, a hug!
[flash(425,350)]http://www.youtube.com/v/ItHpJFjOGA8[/flash]
An externally hosted image should be here but it was not working when we last tested it.
the video proves that in 4R friend Leandro reached 380W and 2R he will test in order to achieve the 500W
Another friend posting your mounting ... More a friend happy with results:
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Here's to the "engineers" on duty, two videos. Really you were right, the amp does not deliver 500W, it EXCEEDS this value. In the second video, in just 4 OHMS 575W, powered with symmetrical about 74 volts. The transistors used in the tests were purposely TOSHIBA (2sc / 2SA) to prove also that no "calculation" overcomes the practice:
Debunker em 500W - YouTube
DebunKer -Strong em 575W - YouTube
Well, there it is. For those who want to build an excellent amplifier power and quality is worth it. However, for those who just pans topics for errors that do not exist, I suggest you actually start doing something useful to help people because of good intentions is filled hell.
I leave here my enormous gratitude to LEANDRO friend, who kindly performed the tests, with much appreciation and dedication. Thank you my friend!
Regards
Debunker em 500W - YouTube
DebunKer -Strong em 575W - YouTube
Well, there it is. For those who want to build an excellent amplifier power and quality is worth it. However, for those who just pans topics for errors that do not exist, I suggest you actually start doing something useful to help people because of good intentions is filled hell.
I leave here my enormous gratitude to LEANDRO friend, who kindly performed the tests, with much appreciation and dedication. Thank you my friend!
Regards
Ai is the actual amplifier with 575 Watts:
https://www.youtube.com/watch?v=cuR78CYF02U
And congratulations for the excellent power supply. Soon we will be providing the layout and schematic for her friends. A no-frills power supply with multiple output options, a well-designed, well distributed, with no components underneath the transformer layout, finally, something very well proportioned and robust.
Regards...
https://www.youtube.com/watch?v=cuR78CYF02U
And congratulations for the excellent power supply. Soon we will be providing the layout and schematic for her friends. A no-frills power supply with multiple output options, a well-designed, well distributed, with no components underneath the transformer layout, finally, something very well proportioned and robust.
Regards...
What's the intended use of this Debunked amplifier?
Home / PA / DJ / MI ?
Did you get to mount it in a cabinet or chassis?
Care to share some pictures?
Thanks.
Home / PA / DJ / MI ?
Did you get to mount it in a cabinet or chassis?
Care to share some pictures?
Thanks.
Good afternoon my friend ...
Dimensionei this amplifier circuit based on a very dedicated hifi , but did many tests and changes with the intention of draining the greatest power ever known this circuit using the highest possible voltage , but without letting the high potency " messed up " the highest quality of sound that this circuit is capable of delivering .
So my purpose was this : An amplifier with extreme quality and extreme power , since whenever we see boards justifies your question, since most " strong " does not have quality. And most hifi are not strong ... So I tried to do a different project , for those who like a good power and does not want to give up quality.
The application will taste of each, can be mounted in a residential office , and used as needed ! The THD it is extremely low in either ( provided that well-fed ) power used , which enables its use also in small environments ...
Posted some pictures above , many people have assembled here in the forum ( DEBUNKER - Strong X4 - 500WRMS - Página 47 ) , but few post pictures , even if we ask ...
Hugs !
The video SMPS used in the above tests that resulted in actual 575W at the amplifier output is here:
The final layout is not ready yet, I'm waiting for the final schema Leandro, so it is in my hands finish the layout here and I can provide it personal ride.
The design is simple and functional, the friend Leandro tested for hours and made fine adjustments to achieve the best result. Uses IGBTs, semiconductors are placed side by side so that we can use only sinks (2 sinks), one of which for the primary oscillator part and the other for secondary grinding part ...
An externally hosted image should be here but it was not working when we last tested it.
The final layout is not ready yet, I'm waiting for the final schema Leandro, so it is in my hands finish the layout here and I can provide it personal ride.
The design is simple and functional, the friend Leandro tested for hours and made fine adjustments to achieve the best result. Uses IGBTs, semiconductors are placed side by side so that we can use only sinks (2 sinks), one of which for the primary oscillator part and the other for secondary grinding part ...