Line up and others interested to watch pictures with music
I have uploaded 12 files to filexoom
here is the link:
http://filexoom.com/myfiles/
Carlos
I have uploaded 12 files to filexoom
here is the link:
http://filexoom.com/myfiles/
Carlos
Re: Line up and others interested to watch pictures with music
Carlos, that link wont work for anybody else but you,
when you are Logged In.
---------------------------------------------
Here is what you links you should use
and what you must do
By the way - max file size to upload is: 50 MB
http://filexoom.com/members/info/56428
http://filexoom.com/members/browse/56428
You should goto 'your files'.
Select your Main folder ... and make it PUBLIC.
You can have other folder you keep private.
To select you click the RIGHT icon
.. it turns blue
.. then action = Make Public
Compare with my Public folder
where I have two public MPG for download.
I recommend the smaller: Winter1.mpg
http://filexoom.com/members/info/56451
http://filexoom.com/members/browse/56451
destroyer X said:
Carlos, that link wont work for anybody else but you,
when you are Logged In.
---------------------------------------------
Here is what you links you should use
and what you must do
By the way - max file size to upload is: 50 MB
http://filexoom.com/members/info/56428
http://filexoom.com/members/browse/56428
You should goto 'your files'.
Select your Main folder ... and make it PUBLIC.
You can have other folder you keep private.
To select you click the RIGHT icon
.. it turns blue
.. then action = Make Public
Compare with my Public folder
where I have two public MPG for download.
I recommend the smaller: Winter1.mpg
http://filexoom.com/members/info/56451
http://filexoom.com/members/browse/56451
I am trying a second supply, when test was finished i will return to tell you.
I will try a double voltage supply amplifier, Mr Jan Dupont,
from our forum, always have use this method…and now a days
many others are using too...having bigger voltage
to input differential , voltage amplifier and bias…all that, my
own will, is to to avoid any kind of audio modulation resulted
of supply voltage losses.
The supply case you see, have 15000 uf each rail, with
snubbers and by passes using capacitors of different values.
Capacitors are connected from plus to ground, negative to
ground and from positive to negative.
A second filter is used, having that one 8200uf each rail, and
it is connected using series inductors….again output electrolytic
condensers are bypassed using small capacitors (Cordell)
No fuse used…. A dangerous supply I know, this was decided
to have guaranteed low resistance related the connection with mains.
This will power my test amplifier.
Ideas came from Carlos FM and Bob Cordell
I will try a double voltage supply amplifier, Mr Jan Dupont,
from our forum, always have use this method…and now a days
many others are using too...having bigger voltage
to input differential , voltage amplifier and bias…all that, my
own will, is to to avoid any kind of audio modulation resulted
of supply voltage losses.
The supply case you see, have 15000 uf each rail, with
snubbers and by passes using capacitors of different values.
Capacitors are connected from plus to ground, negative to
ground and from positive to negative.
A second filter is used, having that one 8200uf each rail, and
it is connected using series inductors….again output electrolytic
condensers are bypassed using small capacitors (Cordell)
No fuse used…. A dangerous supply I know, this was decided
to have guaranteed low resistance related the connection with mains.
This will power my test amplifier.
Ideas came from Carlos FM and Bob Cordell
Attachments
I have installed dual supply voltage, with separated supplies
to feed the input i am using 38 Volts simetrical...and to output stage and driver a 35 Volts supply.
I have listened for minutes only, all i could perceive was more punch in the bass area.
The gain related more undistorted power was not possible to evaluate, as my speakers are almost jumping out from the speaker enclosure (4 ohms - 150 watts unit)
I have tried BC556 with 300 gain....twice the BF423 gain.
Also i have tried other Voltage amplifier, this one with sligthly less capacitance from base to emitter.
Sound continues very good...and the advantage resulted from double supply will need some check, i will have to return to original and switch to double supply once again.
2200uf condensers with 5uf in parallell and 100n were installed in the 35 volts rails...near the output colector.
47uf condensers with 100n in parallell were installed in the input voltage rails (38 volts rails).
Overall audio quality increased, but details about how much increase...or were i could find better result in sonics will need more auditions and more comparisons.
I have perceived as a "new amplifier".... something alike a Macintosh playing..quality was clear at first listening moment.
I have introduced 47uf Black Gates at the input...this one already used and burned in....but may need more time operating once more to turn more stable
regards,
Carlos
to feed the input i am using 38 Volts simetrical...and to output stage and driver a 35 Volts supply.
I have listened for minutes only, all i could perceive was more punch in the bass area.
The gain related more undistorted power was not possible to evaluate, as my speakers are almost jumping out from the speaker enclosure (4 ohms - 150 watts unit)
I have tried BC556 with 300 gain....twice the BF423 gain.
Also i have tried other Voltage amplifier, this one with sligthly less capacitance from base to emitter.
Sound continues very good...and the advantage resulted from double supply will need some check, i will have to return to original and switch to double supply once again.
2200uf condensers with 5uf in parallell and 100n were installed in the 35 volts rails...near the output colector.
47uf condensers with 100n in parallell were installed in the input voltage rails (38 volts rails).
Overall audio quality increased, but details about how much increase...or were i could find better result in sonics will need more auditions and more comparisons.
I have perceived as a "new amplifier".... something alike a Macintosh playing..quality was clear at first listening moment.
I have introduced 47uf Black Gates at the input...this one already used and burned in....but may need more time operating once more to turn more stable
regards,
Carlos
Attachments
Carlos,
have you tried to put some capacitor across that 12V Zener diode....i am interested would it help to improve the sound of the amp...
also - maybe it would be nice to put some 0.22uF or 0.1uF across feedback electrolythic (220uF)....only my humble opinion - you are the master of disaster here heehehehehe....
nice that you are progressing in a positive way....very nice - congratulations....
have you tried to put some capacitor across that 12V Zener diode....i am interested would it help to improve the sound of the amp...
also - maybe it would be nice to put some 0.22uF or 0.1uF across feedback electrolythic (220uF)....only my humble opinion - you are the master of disaster here
heehehehehe....nice that you are progressing in a positive way....very nice - congratulations....
Exactly what i am doing....it is assemble and working near my bed...in my sleeping
room.... wife is jellows about the amplifier.... and i love to provocate her...i call the amplifier "Nikita"...hehe
I am changing parts...tried NP of black gates, some silver mica, ceramics, poliester and others....also tweaking those things...bypassing condensers and all stuff.
I have tried the capacitor near the zener...also big condensers near the power transistor colectors.....trying and hearing.
Master of destruction...ahahahhaha
Yes....i am this one also.....and other guys too.
regards,
Carlos
room.... wife is jellows about the amplifier.... and i love to provocate her...i call the amplifier "Nikita"...hehe
I am changing parts...tried NP of black gates, some silver mica, ceramics, poliester and others....also tweaking those things...bypassing condensers and all stuff.
I have tried the capacitor near the zener...also big condensers near the power transistor colectors.....trying and hearing.
Master of destruction...ahahahhaha
Yes....i am this one also.....and other guys too.
regards,
Carlos
you have a very high voltage gain:
39.000/330- 220uF = Gv 110
(input 0.200 Vrms gives output +/-30 Volt peak)
At supply +/- 35 V DC
I would lower this to 20-30.
Remember, the higher the global gain .. the more difficult to get HIFI.
Because the margins of transistor's gain capacity
will be challenged too much.
This is especially important, when have few stages.
Like only 3 stages.
I do not know what sources you have. For input.
But CD-players have average output ~0.5-0.7 Vrms.
Now, you do the math, destroyer X
Regards, lineup
39.000/330- 220uF = Gv 110
(input 0.200 Vrms gives output +/-30 Volt peak)
At supply +/- 35 V DC
I would lower this to 20-30.
Remember, the higher the global gain .. the more difficult to get HIFI.
Because the margins of transistor's gain capacity
will be challenged too much.
This is especially important, when have few stages.
Like only 3 stages.
I do not know what sources you have. For input.
But CD-players have average output ~0.5-0.7 Vrms.
Now, you do the math, destroyer X
Regards, lineup
Oh!....Mr. John Mateus is constructing the amplifier.
And he gave the name....it was called "Simplício"...this is "Simple man"...Simplex may be the meaning in English.
He found the amplifier simple.
Yes Line up....gain is too high..sensitivity is too big.....we can control this using the feedback resistor...but not to change too much i have included an input attenuator and i sent the values to Mr. John Mateus...as mine own values are different, as i am using a low impedance audio source.
As source i am using my Class D system headphone output...the place were i can pick analogic signal.... all the rest is pulse width modulated signal.
As changes may unballance the amplifier bias....the attenuator will work for a while...at least when i am waiting Mr. John construct the unit.
Also i am beeing a teacher in nearby electronic school, practice of construction teacher...hehe...wonderfull!!!.... and this amplifier will be calculated since the first component during classes...and them, all bugs will be removed in advance...or if some bug stay alive we gonna smash them together....me and my students.
Well...simplício is a little bit ridiculous.... has that simplórius...too much simple idea hidden behing the therm...but my friend Mateus decided this way...so...it will be this way....he is my co-producer.
regards,
Carlos
And he gave the name....it was called "Simplício"...this is "Simple man"...Simplex may be the meaning in English.
He found the amplifier simple.
Yes Line up....gain is too high..sensitivity is too big.....we can control this using the feedback resistor...but not to change too much i have included an input attenuator and i sent the values to Mr. John Mateus...as mine own values are different, as i am using a low impedance audio source.
As source i am using my Class D system headphone output...the place were i can pick analogic signal.... all the rest is pulse width modulated signal.
As changes may unballance the amplifier bias....the attenuator will work for a while...at least when i am waiting Mr. John construct the unit.
Also i am beeing a teacher in nearby electronic school, practice of construction teacher...hehe...wonderfull!!!.... and this amplifier will be calculated since the first component during classes...and them, all bugs will be removed in advance...or if some bug stay alive we gonna smash them together....me and my students.
Well...simplício is a little bit ridiculous.... has that simplórius...too much simple idea hidden behing the therm...but my friend Mateus decided this way...so...it will be this way....he is my co-producer.
regards,
Carlos
Attachments
About the name, yes, I love the name Simplicio, it means Simplex
in English as the best I can tell. However, the reason why I like is
the fact that corresponds to a portuguese name common in Portugal
years and years ago and used mostly by the mountain people...
I found it really cute this is why I insisted with Carlos to keep it.
But of course we have to think about the english language people
and that - Simplicio - is not a very easy name to pronounce and make
it stick. So, call it what you guys like, it's optional, right Carlos?
I have a lot of hope in this amplifier and I'm going to build it so God
gives me the right motivation.
in English as the best I can tell. However, the reason why I like is
the fact that corresponds to a portuguese name common in Portugal
years and years ago and used mostly by the mountain people...
I found it really cute this is why I insisted with Carlos to keep it.
But of course we have to think about the english language people
and that - Simplicio - is not a very easy name to pronounce and make
it stick. So, call it what you guys like, it's optional, right Carlos?
I have a lot of hope in this amplifier and I'm going to build it so God
gives me the right motivation.
Re: Oh!....Mr. John Mateus is constructing the amplifier.
I understand, you do not want to tuch the amp in itself
if it is working rather good.
There can be reasons for having the option to use more gain.
Say when you use low voltage gear, as input devices.
Maybe mp3 player, low PC output .....
But it does not make sense from an amplifier designer
to use more gain than necessary.
It is not voltage followers that has got any distortion, to mention.
Base input and EMITTER output.
The distortion comes when we ask transistors to make voltage gain
= Base input and Collector output
And the less this gain can be made, the better performance.
Better in terms of HiFi.
We see sometimes this amateur approach - in tube amps
and even in solid state:
1. First an attenuator volume control, lower maybe voltage 10 times.
2. An amplifier with gain of x100
3. Overall result: x10
Sensible would be, to achieve same result:
1. Attenuator lower 2 times ( x0.5 )
2. An amplifier with gain of x20
3. Overall result: x10
Building a GOOD power amplifier, with gain x100
compared to x20,
it is SO MUCH more demanding and difficult
that I do not even want to think about it
You may require an extra VAS stage, to get good quality amplification.
I prefer to keep it without that extra = more simple.
mattafort
destroyer X said:
I understand, you do not want to tuch the amp in itself
if it is working rather good.
There can be reasons for having the option to use more gain.
Say when you use low voltage gear, as input devices.
Maybe mp3 player, low PC output .....
But it does not make sense from an amplifier designer
to use more gain than necessary.
It is not voltage followers that has got any distortion, to mention.
Base input and EMITTER output.
The distortion comes when we ask transistors to make voltage gain
= Base input and Collector output
And the less this gain can be made, the better performance.
Better in terms of HiFi.
We see sometimes this amateur approach - in tube amps
and even in solid state:
1. First an attenuator volume control, lower maybe voltage 10 times.
2. An amplifier with gain of x100
3. Overall result: x10
Sensible would be, to achieve same result:
1. Attenuator lower 2 times ( x0.5 )
2. An amplifier with gain of x20
3. Overall result: x10
Building a GOOD power amplifier, with gain x100
compared to x20,
it is SO MUCH more demanding and difficult
that I do not even want to think about it
You may require an extra VAS stage, to get good quality amplification.
I prefer to keep it without that extra = more simple.
mattafort
Thank you Mattafort.... i will show you the way i will construct
I will use this other heatsink.... the same size used in the Anthony Holton amplifier.... a fan blower will be needed.
Yes, i will use Sanken in one of the amplifiers and Toshiba in the other one.
Transistors shown will not be the ones i will use...they are there just to prepare holes to screws.
And construction will be over the copper lines, because easier and faster.
Board size, for a stereo unit will be 93 by 75 milimeters....it may be ready this weekend.
regards,
Carlos
I will use this other heatsink.... the same size used in the Anthony Holton amplifier.... a fan blower will be needed.
Yes, i will use Sanken in one of the amplifiers and Toshiba in the other one.
Transistors shown will not be the ones i will use...they are there just to prepare holes to screws.
And construction will be over the copper lines, because easier and faster.
Board size, for a stereo unit will be 93 by 75 milimeters....it may be ready this weekend.
regards,
Carlos
Attachments
jmateus said:
I think it's a good name. It's good that it's a bit different - easier to remember. The English speakers in North America shouldn't have much problem. Those of us in California and states that border Mexico have long been using some Spanish words. More and more the rest of the country and Canada too. Now the only thing better would be for Carlos to invent a new word.
Sheldon
But i continue to wonder how the USA boys will pronunciate this name
Well...the name is a little bit ugly...maybe people will memorize because of that.
Sym plea C U
Plea from please.
What a complication..the opposite related the amplifer that is very simple.
In the reality...when i think in that name the attached image comes to my mind....very Simplício...hehe
regards,
Carlos
Well...the name is a little bit ugly...maybe people will memorize because of that.
Sym plea C U
Plea from please.
What a complication..the opposite related the amplifer that is very simple.
In the reality...when i think in that name the attached image comes to my mind....very Simplício...hehe
regards,
Carlos
Attachments
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