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-   -   Tube-I-zator Professional PCB (http://www.diyaudio.com/forums/group-buys/156149-tube-i-zator-professional-pcb.html)

dvb projekt 4th December 2009 01:09 PM

Tube-I-zator Professional PCB
 
2 Attachment(s)
Hi to all,

Because of the big success of the I/V SRPP Tube Stage in my finished 4x TDA1541A DAC,
i am planning a PCB Group Buy for those who want to have a optical and technical perfect solution (minimum pre-order 20 PCBs).
This PCB is for "I-OUT" DACs with unbalanced output.
If you want to use it with a "V-OUT" DAC, you must insert a capacitor between the DAC and the PCB.

I have added my Heater-Switch Circuit to the PCB.
Now everyone is able to change between the Russian (6N1P, 6N2P ect.) and Western (12AX7, ECC83 ect.) pinout, without soldering.

The Anode and Heater PSU is included.
There will be the possibility to use an external Anode-PSU, e.g. for upgrading with a Tube rectifier.
Furthermore i made the Audio-Lines extra wide (1,5mm) and choose 70m copper to get minimal loss.

It will be a 2-Layer Design to seaprate the Audio-Lines (Bottom Layer) from the Electrical-Lines (Top-Layer).



The new Tube-I-zator V3.0

The evolution brings the following changes:

- Anode PSU with Salas SSHV Shunt Reg. onboard
- External B+ Input for usage with other Anode PSU
- Heater PSU with C-R-C filtering
- Heater PSU with Softstart circuit
- Heater PSU Power LED

Thanks to John (-ecdesigns-) for the following suggestions!

- Grid stoppers to prevent unwanted oscillations
- Bias current injection for TDA1541A usage
- Pull-down resistors to keep the coupling cap output at GND-potential

Still on the Module:

- Heater switch for 6N2P or 12AX7 usage



New version 3

You will find the BOM in my blog HERE!

For orders please send me a PM or a mail to diyaudiopcb (at) gmx.com


Best regards to the community
dvb-projekt

:wave:

dvb projekt 5th December 2009 01:02 PM

Please don´t forget to write your location in the pre-order, because of the shipping costs.

:cheers:

samoloko 6th December 2009 03:13 PM

schematic

I like to order but don't you think that usd 32 Is too high

Curly Woods 6th December 2009 03:17 PM

Quote:

Originally Posted by samoloko (Post 2003776)
schematic

I like to order but don't you think that usd 32 Is too high

If you are not willing to pay it, then I guess it is :)

dvb projekt 6th December 2009 03:22 PM

Quote:

Originally Posted by samoloko (Post 2003776)
schematic

I like to order but don't you think that usd 32 Is too high

Fell free to save $27 plus the $5 donation to diyAudio and make your own PCB. :no:

gabanyayaya 6th December 2009 03:26 PM

do you provide building guides for voltage out and current output dac for this board and some guides for the BOM...?

samoloko 6th December 2009 03:51 PM

would you post schematic

have you tried mu follower

dvb projekt 6th December 2009 04:00 PM

Quote:

Originally Posted by gabanyayaya (Post 2003791)
do you provide building guides for voltage out and current output dac for this board and some guides for the BOM...?

The parts you will need are all standard parts and are depending of the DAC and tubes you will use.

If i should give a recommendation:

Rectifier Diodes: Fairchild Stelth ISL9R460PF2 (Mouser Part-No: 512-ISL9R460PF2)
Resistors: Texas Components TX2575 (Texas Components - Precision Resistor & Microelectronics)
Tubes: Russian 6N2P-ER or the brand new E813CC from TechTube (www.techtubevalves.com)


If you will have additional questions, feel free to send a PM.
I will try my best to share my experiences.

Best regards,
Oliver[/FONT]

dvb projekt 6th December 2009 04:04 PM

Quote:

Originally Posted by samoloko (Post 2003818)
would you post schematic

have you tried mu follower

In my DAC projekt i have made only the SRPP-Stage.


Best,
Oliver

toufu 8th December 2009 04:49 AM

I will be interested in 3 boards. I am in the US. Thanks.


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