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Old 21st December 2007, 01:26 PM   #11
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Location: Recife - Brasil Northeast
Default My seven years old Volkswagen needs some repair

ball bearings, oil, steering box terminals, fuel tank floating piece,alignment, fuel injection cleaning, spark plugs substitution and more...more...more...more.

135 dollares will be the cost.

Brasil is wonderfull...in other country you may pay 2 times more.

My car is the same as the white one you see in the picture bottom.

I will answer, each one of you in a couple of hours.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 21st December 2007, 01:31 PM   #12
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Default Man, it is lunch time and i am hungry..watch this


Oh man!.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 21st December 2007, 02:35 PM   #13
Twaksak is offline Twaksak  South Africa
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Goeiedag Nordic,

I will be in for a pair of pcb's on DX precision II also. If this doesn't turn into enough customers I will make a pcb freebee for DIY and myself.

Happy festive season to all

Chris
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Old 21st December 2007, 04:04 PM   #14
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Default Thank you all folks.. nice support to the amplifier


And really sound very good... this one is Precision, the published schematic.... there's another one, Precision two that is better.

But also very complicated... a lot of parts.

thank you si-jopie, Giaime, Nordic,Sakis,Homemdder and twaksak.

I could read you all...very nice comments..good Sakis, nice Homemodder, very good help twaksak..also jopie.

Now, let's give time... the amplifier seed is into the ground..we will see how many interested and soon we will have folks offering boards for us.

My part in that one...the Precision, was already made...constructed and tested, after many different prototypes..monthes of hard work...now finished...also the model II gave a lot of work and it is still producing some hard work to me.

Model II, the Precision II will start to be constructed into January.... and will be a mess to organize there..suppliers and that stuff...also boards will be made there..but i cannot use those boards and show the schematic because agreement...maybe i will sell it in the future...but not now a days.

Now a days is time to follow the Precision constructors, to help them with the new amplifier.

When you see one guy posting that constructed..there are more 3 guys doing it into the shadows... and those, use to receive help into direct mail... those use to produce hard work, because when i can talk to hundreds into the forum... direct mail is one by one.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 21st December 2007, 04:06 PM   #15
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Your VAS might blow up when clipping, you should insert a collector resistor for the transistor driving the base of the VAS or insert the appropriate baker clamps.
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Old 21st December 2007, 04:18 PM   #16
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Default Prototype have not burned..and i made it work hard.


But you are not the first to comment this.

And i have to thank you by the kindness to inform this to us.

Here is some protection.... this way people will feel more safe..one transistor more and one resistance is not the problem.

Also the transistor can be other one, a more huge one, and the resistance can be splitted in two units to adjust better the operational point.... also a trimpot can be used to tune each unit into the clipping threshold.

But this was already discussed, deeply, into the Dx thread.

Into the Dx amplifier thread there are many posts about this subject...from UK, Graham Maynard and Andrew T.. they have already explored that weekness, and suggested modifications.

Was tested and did not blow without the protection...but to avoid this same old story once again..here is the protection.

regards,

Carlos
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File Type: pdf dx precision, with protection.pdf (16.8 KB, 1116 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 21st December 2007, 07:43 PM   #17
taj is offline taj
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Haha.

Carlos, how can we build your amplifiers if new versions are introduced 2 each day?? I can't keep up! My trash can is full of crumpled up paper from notes I write down about the the most recent version.

I will stop my revisions at HRII.55v. When I've finished building that one (and all the other amplifiers I'm building) then you will be at DX Amp version 2050 (in 2008). I will then build that one.

I am glad you continue designing, and I'm glad you started a new thread for this one!

Merry Christmas, Boss, I will gladly send you some Christmas weather. We have too much here. Your palm trees will not like it.

..Todd
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Old 21st December 2007, 09:33 PM   #18
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Default A little bit of ice and snow would be helpfull here.


Sorry Todd..... i have wait 3 monthes to publish this Precision... the next one have secret schematic... so you are not really delayed....only one!

I am using ventilator running all day long.... 3 to 4 showers each day... we are melting here.

I am really perceiving my place more hot than some years ago... also ocean level is higher.... waves are already hitting the front ocean buildings... soon we will have to construct ocean barriers because of that.

We still have people burning leaves here, in the place to let them into the ground.

This one finished... as i have complained he was poluting my air.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 21st December 2007, 10:39 PM   #19
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Default I have received the box from Dudainc... inside Nordic gifts to me and also from


Dudainc.

Inside.... thousand of resistances, multimeter, several parts, High Resolution II boards and much more.

Details and pictures published into the Dx amplifier thread.

regards,

Carlos
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Old 22nd December 2007, 12:44 AM   #20
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Default Re: A little bit of ice and snow would be helpfull here.

Quote:
Originally posted by destroyer X


A little bit of ice and snow would be helpfull here.

I am using ventilator running all day long.... 3 to 4 showers each day... we are melting here.

regards,

Carlos
Hello

Here we ad lot and lot of snow, some part of the Montreal city are still under snow, here is a photo.

I'm happy for you that you did finished the final version of the Dx precision.

Bye

Gaetan
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