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[SripBoard Design] Starving Student Millett Hybrid Vacum Tube Amp - Page 5

post #61 of 269
Quote:
Originally Posted by TestSubject View Post

@ NikonGod, Thanks a lot! 

 

@Zammykoo Well hope that my layout will help you if you choose the Protoboard way.

 

Here is V3.4:

Screen shot 2011-07-25 at 11.57.20 PM.png

 

Hope to get building soon!



Sorry the pots are wired wrong the wipers should go to the amp

 

cheers

FRED

 

 

post #62 of 269
Thread Starter 

Thanks! here is V3.4.1:

 

Screen shot 2011-07-27 at 4.24.35 PM.png

post #63 of 269

This looks Great I might make one depending on how yours turns out XD

post #64 of 269
Thread Starter 

Sure this is the reason i post here to help people like me who want a Stripboard design instead of p2p.

post #65 of 269

The little squares with red dots are supposed to be cuts in the traces?

post #66 of 269
Thread Starter 

Yes that's right.

post #67 of 269

Assuming the bottom pins on the mosfets are Source, then the top pins would be gate.

Top to bottom.....

Gate

Drain

Source

 

You can just swop the wires if we want to understand that the drawing is not correct.


Edited by digger945 - 7/28/11 at 6:53pm
post #68 of 269

R8, 390k from +48v to the lower mosfet Gate(assumed the center pin on the drawing)

post #69 of 269

R7, 33k from +48v to the plates of lower 12au7(pins 1 and 6)

 

We can assume that the traces will be cut beneath C2 and C4 before mounting.

 

Move C5 and C5a down one pin, so they couple the lower mosfet source pin with output Right.

post #70 of 269

The little squares with red dots to the far right, next to the output. 

Move the upper one up one trace.

Move the lower one down one trace.

So that they are blocking/terminating the trace with the center pin on the mosfets. 

post #71 of 269

R6 should be connected directly from Ground to the left output.

 

R12 missing, should be same 2k directly fro Ground to right output.

post #72 of 269

Ok, why don't you redraw and we can take up the rest of things tomorrow. I gotta hit the sack for tonight.

post #73 of 269
Thread Starter 

Sounds great thanks again!

post #74 of 269

Wow, stripboard layouts seem harder to follow than pcb, but I look forward to seeing the revised design. Looks like you got this round taken care of.

post #75 of 269
Thread Starter 

 

Hello,
 
I Havent been very well for the past week, but here is an update, I am about to order the components
 
BOM.jpg
A couple things are bugging me, for one, the price, 63 Euros, thats about 90$.
 
2) of all the recomanded brand for caps only wima was available, is it worth it sice i cant get the other good brands?
 
3) 33k Ohms resistors are only available at 1/2 watts
 
4) no 50 K available
 
5) MOSFETS IRF510 are not available, any alternative?
 
6) only stereo 50 K Pot is at 17 euros/ 25$ i mean really? looks good but...
442771_BB_00_FB.EPS.jpg
 
The Psu and tube sockets are ordered.

Edited by TestSubject - 8/7/11 at 1:56pm
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