Good, i hope it is sounding fine.
enjoy your amplifier, and thank you by the picture you have made and posted.
I think 47n is 473, or 47000 picofarads or 0.047uF...well dear Masterinvi, i am 58, so, i use to confuse things too.
There, in the zobel, better to use 47n, 100n and maximum is 150n
regards,
Carlos
enjoy your amplifier, and thank you by the picture you have made and posted.
I think 47n is 473, or 47000 picofarads or 0.047uF...well dear Masterinvi, i am 58, so, i use to confuse things too.
There, in the zobel, better to use 47n, 100n and maximum is 150n
regards,
Carlos
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i install with 470N (474 marking). its triple higher that your maximum 150N. Gonna change it, I have lots of caps in the board, Ijust dont know how to read the voltage rating. Mostly they just labeled 104 012 272 582 etc etc...No voltage specified. Voltage rating is crucial in Zobel?
Here you may have what you want Black, the parts list and all decisions about where
Informed:
Increase resistance to zener (1 watt)
Increase, using proportion, ratio, percentual calculation, the bootstrapp resistances.
Use 100 volts electrolitic condensers, to the zobel use 400V capacitor, to the bootstrapp, the electrolitic condenser must be 160V or more.
Bootstrapp resistances must be 1 watt, zobel resistance 2 watts, and use emitter resistances in all your transistors, and better to use 15 pairs to each channel.
Transistors, all them, must be 200 volts units or even more than that..the ouput transistor can be the ones the DHR Turbo is using.
VAS heatsink must be big, also the VAS transistor must hold 2 watts in a very confortable way...must be low capacitance unit, a fast transistor, with gain bigger than 50.
Output can be the original, the ones DHR Turbo is using, but heatsink will not enter the Volkswagen Beetle lugage compartment, so bit it will be.
Prepare the list by youself, i am giving you a suggestion, a small helping hand, but i repeat, i do not guarantee such kind of monster amplifier..do it if you want, under your own risk.
If you do not know what is the bootstrapp condenser, or the resistance that feeds the zener, them do not build as you are not prepared to do that.
The voltage is dangerous, can kill you, and forum management do not allow us to publish such a dangerous schematic.
I do not know you, i can be talking with the best electronic man in the universe, a normal one, a novice or even worse one...so, this is up to you to see if you can do that.
I do not give follow up to amplifiers i have not tested....if you want 90 volts, do by yourself and be happy.
I will repeat to be very clear, i am not responsable for amplifiers using 90 volts symetrical supply, i really, personally, think they are too much dangerous..i have not made, i have not tested, a friend made and said was good, i could not see, i am not sure if he told the truth....he has not even sent me pictures, so, his word only.
Good luck,
regards,
Carlos
Informed:
Increase resistance to zener (1 watt)
Increase, using proportion, ratio, percentual calculation, the bootstrapp resistances.
Use 100 volts electrolitic condensers, to the zobel use 400V capacitor, to the bootstrapp, the electrolitic condenser must be 160V or more.
Bootstrapp resistances must be 1 watt, zobel resistance 2 watts, and use emitter resistances in all your transistors, and better to use 15 pairs to each channel.
Transistors, all them, must be 200 volts units or even more than that..the ouput transistor can be the ones the DHR Turbo is using.
VAS heatsink must be big, also the VAS transistor must hold 2 watts in a very confortable way...must be low capacitance unit, a fast transistor, with gain bigger than 50.
Output can be the original, the ones DHR Turbo is using, but heatsink will not enter the Volkswagen Beetle lugage compartment, so bit it will be.
Prepare the list by youself, i am giving you a suggestion, a small helping hand, but i repeat, i do not guarantee such kind of monster amplifier..do it if you want, under your own risk.
If you do not know what is the bootstrapp condenser, or the resistance that feeds the zener, them do not build as you are not prepared to do that.
The voltage is dangerous, can kill you, and forum management do not allow us to publish such a dangerous schematic.
I do not know you, i can be talking with the best electronic man in the universe, a normal one, a novice or even worse one...so, this is up to you to see if you can do that.
I do not give follow up to amplifiers i have not tested....if you want 90 volts, do by yourself and be happy.
I will repeat to be very clear, i am not responsable for amplifiers using 90 volts symetrical supply, i really, personally, think they are too much dangerous..i have not made, i have not tested, a friend made and said was good, i could not see, i am not sure if he told the truth....he has not even sent me pictures, so, his word only.
Good luck,
regards,
Carlos
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Yes, you can use, but for 8 ohms loads, to a single channel, because
Your output power will be 335 Watts RMS and your consumption will match your transformer.... this means the voltage will drop, and no more 82 volts, and power output no more 335 watts...maybe 250 watts.
The transformer power is the limiting factor...we cannot generate, using audio oscilator (amplifier is audio oscilator, oscilates following, tracking the input audio wave) more power than the power transformer can deliver.
If you seriously want to build, say, really, then tell me and i will give some help and will tweak this amplifier i have made to myself, to lower distortion.
With this transformer you have, 5 pairs in the output is much more than needed.
The schematic attached shows two pairs, do not worry about that, was my testings, my tweekings, the condenser and capacitor voltage will need to be 100 volts, the bootstrapp condenser will need a 160 volts unit, the output coil i will inform if you decide to (really) build and other details too.
I am not providing all the stuff because there are a lot of folks that just ask and do not build, so, not to waste time, i am giving you some few informations about for your decision, latter on we can talk more, and better.
be happy,
regards,
Carlos
Your output power will be 335 Watts RMS and your consumption will match your transformer.... this means the voltage will drop, and no more 82 volts, and power output no more 335 watts...maybe 250 watts.
The transformer power is the limiting factor...we cannot generate, using audio oscilator (amplifier is audio oscilator, oscilates following, tracking the input audio wave) more power than the power transformer can deliver.
If you seriously want to build, say, really, then tell me and i will give some help and will tweak this amplifier i have made to myself, to lower distortion.
With this transformer you have, 5 pairs in the output is much more than needed.
The schematic attached shows two pairs, do not worry about that, was my testings, my tweekings, the condenser and capacitor voltage will need to be 100 volts, the bootstrapp condenser will need a 160 volts unit, the output coil i will inform if you decide to (really) build and other details too.
I am not providing all the stuff because there are a lot of folks that just ask and do not build, so, not to waste time, i am giving you some few informations about for your decision, latter on we can talk more, and better.
be happy,
regards,
Carlos
All rigth, so, 77.55 Volts, it is all rigth, the 82 volts schematic will fit
In audio electronics, we have more or less 10 percent of voltage variation tollerance...also 20 percent may work too...so, if an amplifier is made for 35 volts, it can work with 28 or 42 Volts.
You see, our mains voltage also has some variation too....so, there are variations, acceptable within a certain tollerance.
regards,
Carlos
In audio electronics, we have more or less 10 percent of voltage variation tollerance...also 20 percent may work too...so, if an amplifier is made for 35 volts, it can work with 28 or 42 Volts.
You see, our mains voltage also has some variation too....so, there are variations, acceptable within a certain tollerance.
regards,
Carlos
Carlos, I can promise you I will build this amp also have the amp boards.How much is the minimum VA the amp needs per channel ?Maybe I build a regulated powersupply of Thel Audio.So I can use my 2x55AC/500VA toroid if it has enough Va for two channels.
There's a power chart in the DHR Turbo thread, search for it
VA means Volts multiplied by Amperes, this is Watts.
Your output power depends your voltage, off course and mainly depends on the current, and also depends your load impedance, so, there's the chart made to answer that.
AB amplifiers, when produce 100 watts, the consumption is 160 watts....i other words, to obtain 100 watts as a resultant power you will need 160VA transformer.
So, as you see you need almost twice (safety room) power in the transformer, almost half of that will be audio power....better to use twice.... if you want 500 watts in a single channel amplifier, then install a 1 kilowatt power transformer to this channel.
There's all you need to know to calculate by yourself and realise by yourself using Arithmetics or very basic Mathematics.
I have no chart, was posted, not only in the DHR Turbo thread but also in the Precision 1 thread.
You see, an audio amplifier, not only the DHR Turbo, but any audio amplifier, having 78 volts in the supply (78 plus 78 volts) is able to put out more than 52 volts rms of audio.... well, this means something around 335 watts in 8 ohms, maybe twice, or 770 at 4 ohms and can reach 1 kilowatts at 2 ohms...but this depends the audio source level, the amplifier adjusted sensitivity, and mainly depends the power transformer power.... to obtain 1 Kilowatt you need 2 kilowatt transformer...man!, this transformer, if E/I type will be a Alcohol moved vehicle battery, Ethanol moved vehicle, that needs high compression ratio in the combustion chamber, to turn that engine you need a battery able to continuously give you 100 Amperes, and many times more during the moments you force engine to run, when you turn the engine to start up....you see, that battery is huge..your transformer will be that size.... this is the main reason you do not have these transformers easily available, so the solution is Class D, as the transformer will be half that size, and if a switching supply was used it will be smaller than 1 litter milk box.
Imagine a stereo, pumping 1 kilowatt each channel, think about the size!...two enormous, battery sized, power transformers, the electrolitic bank will be enormous too, and very expensive, the heat generated enormous... and maybe 50 Amperes will be sucked from the transformer secondary coil.....the mains power will be also something alike... and home wiring and home fuses MAINS cannot provide that, so you will need to pick a direct cable, not your home mains cables, not the internal home cable...or will need a power generator, an engine coupled to a generator....you see how crazy that stuff can be... say, to have real 2 kilowatts of power, sinus power, continuous power, undistorted power, real rms power.
We do not create energy, in the reality we lost when we use the energy, there are losses, in our case is 50 percent losses...the amplifier power depends on the transformer power...no magic about that.
YES!, your 500 watts transformer is able to produce a total of 300 watts of power maybe, and this if this 500 watts is truth, here in Brasil this is normally over weigthed... so, you have 300 watts of power, or two channels of 150 watts RMS.... you can do whatever you do and will not have more than that, your voltage will drop down, you can use 4 ohms, 2 ohms, 1 ohms, you can use zillion microfarads condensers in your supply, does not matter, no magic allowable, your power, maximum power, will be 150 watts each channel.
regards,
Carlos
VA means Volts multiplied by Amperes, this is Watts.
Your output power depends your voltage, off course and mainly depends on the current, and also depends your load impedance, so, there's the chart made to answer that.
AB amplifiers, when produce 100 watts, the consumption is 160 watts....i other words, to obtain 100 watts as a resultant power you will need 160VA transformer.
So, as you see you need almost twice (safety room) power in the transformer, almost half of that will be audio power....better to use twice.... if you want 500 watts in a single channel amplifier, then install a 1 kilowatt power transformer to this channel.
There's all you need to know to calculate by yourself and realise by yourself using Arithmetics or very basic Mathematics.
I have no chart, was posted, not only in the DHR Turbo thread but also in the Precision 1 thread.
You see, an audio amplifier, not only the DHR Turbo, but any audio amplifier, having 78 volts in the supply (78 plus 78 volts) is able to put out more than 52 volts rms of audio.... well, this means something around 335 watts in 8 ohms, maybe twice, or 770 at 4 ohms and can reach 1 kilowatts at 2 ohms...but this depends the audio source level, the amplifier adjusted sensitivity, and mainly depends the power transformer power.... to obtain 1 Kilowatt you need 2 kilowatt transformer...man!, this transformer, if E/I type will be a Alcohol moved vehicle battery, Ethanol moved vehicle, that needs high compression ratio in the combustion chamber, to turn that engine you need a battery able to continuously give you 100 Amperes, and many times more during the moments you force engine to run, when you turn the engine to start up....you see, that battery is huge..your transformer will be that size.... this is the main reason you do not have these transformers easily available, so the solution is Class D, as the transformer will be half that size, and if a switching supply was used it will be smaller than 1 litter milk box.
Imagine a stereo, pumping 1 kilowatt each channel, think about the size!...two enormous, battery sized, power transformers, the electrolitic bank will be enormous too, and very expensive, the heat generated enormous... and maybe 50 Amperes will be sucked from the transformer secondary coil.....the mains power will be also something alike... and home wiring and home fuses MAINS cannot provide that, so you will need to pick a direct cable, not your home mains cables, not the internal home cable...or will need a power generator, an engine coupled to a generator....you see how crazy that stuff can be... say, to have real 2 kilowatts of power, sinus power, continuous power, undistorted power, real rms power.
We do not create energy, in the reality we lost when we use the energy, there are losses, in our case is 50 percent losses...the amplifier power depends on the transformer power...no magic about that.
YES!, your 500 watts transformer is able to produce a total of 300 watts of power maybe, and this if this 500 watts is truth, here in Brasil this is normally over weigthed... so, you have 300 watts of power, or two channels of 150 watts RMS.... you can do whatever you do and will not have more than that, your voltage will drop down, you can use 4 ohms, 2 ohms, 1 ohms, you can use zillion microfarads condensers in your supply, does not matter, no magic allowable, your power, maximum power, will be 150 watts each channel.
regards,
Carlos
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I have no pictures, but seems may be truth.
I have a friend, who belongs to my group of Orkut. He use to assemble all my amps to test, and use them at dances, at parties, where he fill with power sound big places, large environments ... and this guy rode two DHR Turbo bridge, with 90 volts on each of them, 30 pairs of transistors were used and the heat sink had a meter in length cooled turbo fans .. height of the sinks of 30 centimeters and a width of 40 centimeters ... transformer size may be alike automobile batteries.
regards,
Carlos
I have a friend, who belongs to my group of Orkut. He use to assemble all my amps to test, and use them at dances, at parties, where he fill with power sound big places, large environments ... and this guy rode two DHR Turbo bridge, with 90 volts on each of them, 30 pairs of transistors were used and the heat sink had a meter in length cooled turbo fans .. height of the sinks of 30 centimeters and a width of 40 centimeters ... transformer size may be alike automobile batteries.
regards,
Carlos
Attachments
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Dear black, if you are not able to produce our schematic, watching the DHR Turbo
published schematic, really, better not to build.
There are simple convertions, simple Mathematics to do that.
Try ESP pages, there you have big power too... and there everything is already made, and converted, nothing to calculate.
My standard schematic was posted, and i will not modify producing more customized ones, because people use to ask, them they do not build, happened with 99 percent of the guys asked, i do not understand why, but people that use to ask customized do not assemble.
Here you have the schematic, this one can work from 60 to 80 volts without any troubles.
regards,
Carlos
published schematic, really, better not to build.
There are simple convertions, simple Mathematics to do that.
Try ESP pages, there you have big power too... and there everything is already made, and converted, nothing to calculate.
My standard schematic was posted, and i will not modify producing more customized ones, because people use to ask, them they do not build, happened with 99 percent of the guys asked, i do not understand why, but people that use to ask customized do not assemble.
Here you have the schematic, this one can work from 60 to 80 volts without any troubles.
regards,
Carlos
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Hello everyone ..
This amplifier would be good for the subwoofer home .?
Lengths
Nelson Antunes
This amplifier would be good for the subwoofer home .?
Lengths
Nelson Antunes
YES!, your 500 watts transformer is able to produce a total of 300 watts of power maybe, and this if this 500 watts is truth, here in Brasil this is normally over weigthed... so, you have 300 watts of power, or two channels of 150 watts RMS.... you can do whatever you do and will not have more than that, your voltage will drop down, you can use 4 ohms, 2 ohms, 1 ohms, you can use zillion microfarads condensers in your supply, does not matter, no magic allowable, your power, maximum power, will be 150 watts each channel.
regards,
Carlos[/QUOTE]
I will follow your sugestions and go for the 2x150Watts and after a while maybe go for 1000VA toroids per channel and go for 2x 500 Watts.But I think that a 2x150 watt amp is enough fot now.
regards,
Carlos[/QUOTE]
I will follow your sugestions and go for the 2x150Watts and after a while maybe go for 1000VA toroids per channel and go for 2x 500 Watts.But I think that a 2x150 watt amp is enough fot now.
Power output depends on several things
each case is different... around 200 watts in 8 ohms is possible, but several factors will influence.
More common is to obtain 150 watts, because supply voltage drops with consumption.
Also, using a single transformer, under sized, the power can drop to 80 watts each channel or less.
Power depends on the transformer power too, not only the supply voltage unloaded.
Search for a chart in this same thread, read the thread if you want to build, i have already informed all that stuff in details.
regards,
Carlos
each case is different... around 200 watts in 8 ohms is possible, but several factors will influence.
More common is to obtain 150 watts, because supply voltage drops with consumption.
Also, using a single transformer, under sized, the power can drop to 80 watts each channel or less.
Power depends on the transformer power too, not only the supply voltage unloaded.
Search for a chart in this same thread, read the thread if you want to build, i have already informed all that stuff in details.
regards,
Carlos
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I do not know, but maybe I expressed myself badly.
I was referring to the latest version of (tdr turbo) at +-70v ...
And in the first few pages of the topic I had read..
"DHR Turbo - revision 2 ... 70 plus supply 70 Vdc
Rail Power RMS current Total current. Impedance
610W 7.9A 15.8A 2 ohms
620W 6.5A 13.0A 3 ohms
485W 5.0A 10.0A 4 ohms
405W 4.0A 8.0A 5 Ohm
340W 3.4A 6.8A 6 ohms
290W 2.9A 5.8A 7 ohms
270W 2.6A 5.2A 8 ohms "
And I use smps (chaveada) 70v source (1000w), is already made and tested.
Lengths
Nelson Antunes
I was referring to the latest version of (tdr turbo) at +-70v ...
And in the first few pages of the topic I had read..
"DHR Turbo - revision 2 ... 70 plus supply 70 Vdc
Rail Power RMS current Total current. Impedance
610W 7.9A 15.8A 2 ohms
620W 6.5A 13.0A 3 ohms
485W 5.0A 10.0A 4 ohms
405W 4.0A 8.0A 5 Ohm
340W 3.4A 6.8A 6 ohms
290W 2.9A 5.8A 7 ohms
270W 2.6A 5.2A 8 ohms "
And I use smps (chaveada) 70v source (1000w), is already made and tested.
Lengths
Nelson Antunes
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So you have the informations, just read them
Que queres homem?, já não tens as informações na tabela?
Não use cumprimentos no google translator que êle traduz tudo errado... êle entende comprimento, medida do comprimento.
Leia, tudo já foi esplicado, não tou te entendendo, dá pra escrever em portugues pra ver se compreendo o que realmente queres?
What do you really want man!, you already got the information from the chart.
Do not use word "cumprimentos", the google translator is translating as lengths, this means distance, alike width, heigth.
Read, everything was already explained, i am not understanding you, can you please write in portuguese, directly to my email, i really do not know what you want..you have it and asking...does not make any sense to me.
carlos.eugenio1951@yahoo.com
Your smps supply, if really 1000 watts, will make you able to have around 500 watts of power if a single channel, if stereo, your power will be 250 watts aproximatelly (or even more)..but this will happens (500 watts) if you use only one channel connected to your supply, if you decide to plug two channels in this same supply, then you gonna have something around and aproximatelly 250 watts into 4 ohms loads, a sinusoidal continuous tone must enter the amplifier, frequency of 1 Kilohertz and the level entering must be 750 milivolts rms, the output is not clipped... you can have more, this is just the guaranteed power, a reference power, if you smps really was able to supply 1000 watts maintaining stable 70 volts in the output terminals, and this i doubt.
Sua fonte chaveada, se realmente fornece 1000 watts, produzira, aproximadamente, 500 watts de potencia (até mais) mas isso em um canal apenas, se usares dois canais ligados à essa fonte, daí vais ter alguma coisa como 250 watts por canal, senoidais, continuos, 1 Kilohertz e sobre carga de 4 ohms e se entrares nos amplificadores com sinal de audio senoidal, na amplitude de 750 milivolts rms...sinal não ceifado.
Maybe you feel i am not so kind with brazilian compared with strangers, if you feel that you are 100percent rigth, i am not more hard because forum management does not allow us to be rude...and the reason why is that brazilians are always sniffing an oportunity to make money with those free designs we publish here, when i had never trouble with strangers, they respect our rigths about out designs..in several years i have no problem with them, but in Brazil Orkut, with just 300 guys i had in two years several troubles...now my orkut group was reduced, to avoid people copying schematics to sell kits, happened several times....i became very neurothic against my people because not very honest..really, no doubts i am sick about that.
You seem Brazilian... i hope you are not.... related that stuff, Brazilian (most of them) are awfull.
regards,
Carlos
Que queres homem?, já não tens as informações na tabela?
Não use cumprimentos no google translator que êle traduz tudo errado... êle entende comprimento, medida do comprimento.
Leia, tudo já foi esplicado, não tou te entendendo, dá pra escrever em portugues pra ver se compreendo o que realmente queres?
What do you really want man!, you already got the information from the chart.
Do not use word "cumprimentos", the google translator is translating as lengths, this means distance, alike width, heigth.
Read, everything was already explained, i am not understanding you, can you please write in portuguese, directly to my email, i really do not know what you want..you have it and asking...does not make any sense to me.
carlos.eugenio1951@yahoo.com
Your smps supply, if really 1000 watts, will make you able to have around 500 watts of power if a single channel, if stereo, your power will be 250 watts aproximatelly (or even more)..but this will happens (500 watts) if you use only one channel connected to your supply, if you decide to plug two channels in this same supply, then you gonna have something around and aproximatelly 250 watts into 4 ohms loads, a sinusoidal continuous tone must enter the amplifier, frequency of 1 Kilohertz and the level entering must be 750 milivolts rms, the output is not clipped... you can have more, this is just the guaranteed power, a reference power, if you smps really was able to supply 1000 watts maintaining stable 70 volts in the output terminals, and this i doubt.
Sua fonte chaveada, se realmente fornece 1000 watts, produzira, aproximadamente, 500 watts de potencia (até mais) mas isso em um canal apenas, se usares dois canais ligados à essa fonte, daí vais ter alguma coisa como 250 watts por canal, senoidais, continuos, 1 Kilohertz e sobre carga de 4 ohms e se entrares nos amplificadores com sinal de audio senoidal, na amplitude de 750 milivolts rms...sinal não ceifado.
Maybe you feel i am not so kind with brazilian compared with strangers, if you feel that you are 100percent rigth, i am not more hard because forum management does not allow us to be rude...and the reason why is that brazilians are always sniffing an oportunity to make money with those free designs we publish here, when i had never trouble with strangers, they respect our rigths about out designs..in several years i have no problem with them, but in Brazil Orkut, with just 300 guys i had in two years several troubles...now my orkut group was reduced, to avoid people copying schematics to sell kits, happened several times....i became very neurothic against my people because not very honest..really, no doubts i am sick about that.
You seem Brazilian... i hope you are not.... related that stuff, Brazilian (most of them) are awfull.
regards,
Carlos
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Me desculpe, mas o meu inglês é fraco por isso que vou no google..😎
Eu ja li muita coisa no fórum, mas como google não traduz bem fico leigo.. 😱
Eu nas primeiras paginas do tópico tinha lido..
DHR Turbo - versão 2
610W 7.9A 15.8A 2 ohms
620W 6.5A 13.0A 3 ohms
485W 5.0A 10.0A 4 ohms
405W 4.0A 8.0A 5 Ohm
340W 3.4A 6.8A 6 ohms
290W 2.9A 5.8A 7 ohms
270W 2.6A 5.2A 8 ohms
E pelo que vocé me disse a pouco, quer dizer o google que me disse a pouco 😉, eu percebi que este amplificador só fornece 150w a 8ohm na melhor das hipóteses..
E por isso que fico confuso.. O esquema a que eu tava associar essas medidas acima descritas era este em anexo..
Ou será outro, secalhar fiz confusão..
Eu precisa de um amplificador mais ou menos com os 250 ou 270w em 8 ohms, para subwoofer, é para uma sala..
Não, sou português mesmo e o meu hobby é o áudio.. Apenas quero aprender umas coisas e conseguir um som porreiro para minha sala..
Desde já obrigado
Eu ja li muita coisa no fórum, mas como google não traduz bem fico leigo.. 😱
Eu nas primeiras paginas do tópico tinha lido..
DHR Turbo - versão 2
610W 7.9A 15.8A 2 ohms
620W 6.5A 13.0A 3 ohms
485W 5.0A 10.0A 4 ohms
405W 4.0A 8.0A 5 Ohm
340W 3.4A 6.8A 6 ohms
290W 2.9A 5.8A 7 ohms
270W 2.6A 5.2A 8 ohms
E pelo que vocé me disse a pouco, quer dizer o google que me disse a pouco 😉, eu percebi que este amplificador só fornece 150w a 8ohm na melhor das hipóteses..
E por isso que fico confuso.. O esquema a que eu tava associar essas medidas acima descritas era este em anexo..
Ou será outro, secalhar fiz confusão..
Eu precisa de um amplificador mais ou menos com os 250 ou 270w em 8 ohms, para subwoofer, é para uma sala..
Não, sou português mesmo e o meu hobby é o áudio.. Apenas quero aprender umas coisas e conseguir um som porreiro para minha sala..
Desde já obrigado
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