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Starving Student PCB's - Page 6

post #76 of 222

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Edited by vixr - 10/20/13 at 10:27am
post #77 of 222

I was given a PCB as a gift, but without doumentation. Is there a schematic and stuffing diagram for the PCB?

 The PCB is a light green with a dark green solder mask. has provision for 6 pin pot on the top side and has  X10034 as an identifier, 3"x3". I was told it was for a 12au7 version of the design, not for the 19C6 tube.... it has provisions for 2 tubes and 2 mosfets.


Edited by eroline - 10/14/13 at 7:10am
post #78 of 222
Thread Starter 

Have a look at the first post for pictures

and

The official staving student thread for schematics

 

cheers

post #79 of 222

I've got most of the BOM stuff in a cart on mouser, but they don't appear to stock tube sockets. Would this be appropriate? Oh, and those leads for the MOSFETs, anyone know where to get those?


Edited by xdmkii - 10/17/13 at 7:31am
post #80 of 222
Thread Starter 

Those tube sockets are fine, the lead for the mosfets are just wires soldered on and covered with heat shrink

 

cheers

post #81 of 222

I'm eyeing this board myself. I'm a bit curious, how much did the one you have pictured cost to make?

post #82 of 222
Thread Starter 

If you mean the board on the first page, it was mostly parts I had laying around the place so giving an accurate cost would be hard $20-$30 at a guess :-)

 

cheers

FRED

post #83 of 222

 I had sockets on order from china, I had everything else.  I stuffed mine for 24volt operation, Wes did his for 48volt supply.

Thanks for everyones support!!!!!! I have a hard time finishing someone else's design. I've just been building my own designs for years so I have full understanding of each component.

post #84 of 222

We built 2 boards over the weekend, one for 24 volt and one for 48 volt.  I used a 12au7 for the 24volt version and it works good. I upped the coupling caps, used 1/4watt resistors to stuff the PCB.

post #85 of 222

Just to check with you guys about grounding the metal enclosure. 

Is it just connect the Ground from the DC power supply? I know the center of the powert jack is positive 48V, then the outside of the jack is GND or Negative? 

post #86 of 222
Quote:
Originally Posted by RealSpark View Post
 

Just to check with you guys about grounding the metal enclosure. 

Is it just connect the Ground from the DC power supply? I know the center of the powert jack is positive 48V, then the outside of the jack is GND or Negative? 

Correct. It doesn't really matter where you ground the housing, als long as is not your main ground lead. Always hardwire your grounding.   

post #87 of 222

Hi guys,

 

Are there any PCBs left?

post #88 of 222

What do you mean "main ground lead"? Can I just get a wire connect between the housing and the DC jack (outside of course)? 

post #89 of 222
Quote:
Originally Posted by Kaaf View Post
 

Correct. It doesn't really matter where you ground the housing, als long as is not your main ground lead. Always hardwire your grounding.   

What do you mean "main ground lead"? Can I just get a wire connect between the housing and the DC jack (outside of course)? 

post #90 of 222
Thread Starter 
Quote:
Originally Posted by HighMasterGogo View Post
 

Hi guys,

 

Are there any PCBs left?

Yes no problems with the boards

 

cheers

FRED

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