Inductors in T Amp

[@lf]

I want to build air core inductors for my T-Amp.
Does anybody know how many wire turns, wire diameter (in mm) and air core height and diameter (in mm)?

 

[dillo]

Take a look at this.
http://colomar.com/Shavano/inductor_info.html
It's a good starting point

bye

 

[@lf]

Thank you! Now I have toroids And I know value - 10uH

 

[@lf]

My T-Amp

 

[audiotux]

Hallo @IF ,
thank you for the pictures of your T-Amp .
Can we see more pictures from the PCB ?
Can you please explain the Mods you have done ?
Greetings from Germany
Jürgen

 

[@lf]

My English is not so good but I'll try to explain...

First thing is that the shortest (possible) signal and/or power supply path is THE MOST IMPORTANT thing here. Like for the GainCard/GainClone amp. Again THE MOST IMPORTANT thing. If you fail here and leave only few millimeters of wire more than it's necessary result will be not so good.

You need good magnifying glass. I have two of them.
Big one is 7.99 eur and small one which is part (eyepiece or ocular) of toy microscope set. If you want you can find this toy microscope at
Toys "R" Us Ltd.

Concord, ON L4K 4M5
Maidenhead Berkshire UK

or

Toys "R" Us AG, 8305 Dietlikon
Koeln, Deutschland



Without this and good soldering iron you can't do much. But with this you can put two 1000-2200uf/16-25V caps close to TA2024 as TRIPATH suggest (see picture )

 

[@lf]

Then you need SLA battery and battery charger

And keep wires between TA2024 and battery as SHORT as posible

 

[@lf]

Next replace DIODES.
Find MBRS 130 T3 SHOTTKY 30V 1A diodes. Or other suitable Ultra Fast Recovery diodes

For maximum effectivness these diodes MUST be located close to the output pins and returned to their respective PGND tm

This means try to move new diodes closer to TA 2024 chip.

 

[@lf]

... then you need some SODER-WICK from Chemotronic or any other company AND minimum 100 m of silver wire, if possible

and here you have link about soldering SMD components...

http://members.lycos.nl/anthonyvh/index.php?page=smd

When you finish reading this you will realize that soldering smd's can be easier than we think...

 

[@lf]

 

[@lf]

... solder silver wire on pcb traces. Just follow traces to the connection points. Make pause every 5 minutes and drink beer

... and remove LED diode. You need all power for your TA 2024. Or make new power supply for LED.

 

[@lf]

connect directly 2,2uF caps with 22k resistors to pin 11 and 15 as it is shown on picture...

 

[@lf]

Aluminium box IS VERY IMPORTANT for this amplifier. Plastic or wood boxes are Boxes made of this materials can look really good but for this amp use aluminium or maybe copper...

and remove volume pot and replace it with Stevens & Billington Limited Audio transformers TX-102!

 

[audiotux]

Hallo @IF ,
thank you very much for the posts , you are a
great Blessing for us all . You have done a real good
Job with this Mods ,nice to see this pictures .
Thank you again , and when there more to show us
go ahead !
Enjoy the music !
Greetings from Germany
Jürgen

 

[@lf]

Thank you!

@ L F

 

[@lf]

Between pin 10 and 11 you have
36k feedback resistor

and

between pin 14 and 15 you have another
36k feedback resistor

Change this to 20K 0.1% smd resistors (see TRIPATH Technical Information)

The ideal gain of the TA 2040 is set by the ratio of two external resistors, R(I) and R(F). The ideal gain is 12V/V, whereas typical values are: Av=11.5V/V for 4ohm 11.7V/V for 8ohm.

 

[@lf]

 

[@lf]

 

[@lf]

... option...

 

[@lf]