Group Buy: DRV134 pcb, unbalanced to balanced

[peranders]

I have upload the documentation for the DRV134 pcb. Can be found at the wiki page and here

I will order parts today and plan to start making kit's next week and I won't mix the parts so you won't have to worry about unmarked caps. I will colour mark the small parts.

 

[dudaindc]

P-A
I signed up for 2 DRV134 boards and updated the Wiki accordingly.
Thanks!
😀

 

[peranders]

The design is debugged.
http://www.diyaudio.com/forums/showthread.php?p=1944065

 

[Session]

peranders: I am a little confused. What is BPA300 compared to PA 150 compared to DRV134 ? I am interested in a litte more info. Be aware, I am a novice from Norway, but I am 120% certain that I can put together a module or 4 😉

 

[peranders]

The single LM3886 pcb is called PA150 and two such pcb's driven by a DRV134 is a BPA300 amp. You can check the webpage of the designer http://shine7.com

 

[Session]

Ahh... Now I see. So the BPA300 delivers around 150W into 8 Ohms?

 

[peranders]

http://www.national.com/an/AN/AN-1192.pdf

 

[JohnnyP00]

Hi Peranders,

Is there kits available for the DRV134 pcb's now. I'm confused at first you said there wouldn't be any but now it seems there are.😕

If there is can you change my WiKi to add the kits with my order. Just paypal me the difference.😀

Also one question, the rectifier is on board already, how much voltage is needed to run the DRV134 unit. Can I splice it from the big transformer (BPA300)

Thanks for your help... JohnnyP00

 

[peranders]

The SMD parts are for the PA150 pcb. I'll only offer the IC DRV134.

 

[peranders]

Also one question, the rectifier is on board already, how much voltage is needed to run the DRV134 unit. Can I splice it from the big transformer (BPA300)

You can check the datasheet for the DRV134 if you want to know any details but if you use the on-board regulators you will need 17 volts at least if you use the LM317/337.

 

[peranders]

I'm out of SMD-kits but you can sign up for more. I'll order when I have 20-25 kits.

 

[peranders]

Right now I'm waiting for the metal strip resistors. When I'll have them your stuff will leave me.

 

[HIPCHECK]

I have been gone for a long time, and havnt followed this forum much. I was without a computer. Peranders do you need the dale SMD power resistors? I have a reel left, and have donated to all the group buys before. please let me know in forum or email. Than you for your help with the previous group buy also.

 

[peranders]

Next week I will start delivering 🙂

 

[peranders]

Items are shipped

 

[Ed LaFontaine]

PA,

My DRV134 boards have arrived.

Thank You 😉

 

[pchw]

Ditto, arrived US West Coast as well.

Thanks!!

 

[Shaun]

Got mine, and it looks super-High End!

I'm just a bit puzzled by the errata note that P-A sent. I understand that +V and -V labels on X4 are swapped, but the other "minor" errors (X2 and X3) don't look wrong. What am I missing?

 

[peranders]

X4 is critical, smoke will appear if you connect it wrong but for X2 and X3 you will hardly notice the error unless you can hear the absolute phase.

 

[Shaun]

P-A, the note says:

X2 shall be GND -OUT. It is this way on the board already, apparently.
X3 shall be GND +OUT. This seems wrong, as the second terminal (from left) is connected to the ground plane.

WRT X2 and X3, the outer terminals are connected to ground plane.