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Old 30th May 2008, 02:14 AM   #941
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Hi Goffe,
Your pcb is taking on a rather professional look! Looking good, rather neat design.

While you're doing the corrections, I would add a bit of room around the" IN/GND" points so can use a cable mount connector like a "Weidmuller, Phoenix, etc" with 5.08mm pin spaces also suitable for standard terminals - they all take up a lot of room but most of us undo our pcbs quite a lot - can solder directly when finalized. Perhaps also for the O/P pin, too. Brian has used the 1/4" QC connectors elsewhere to good effect. Fatten the track, there's plenty of space, less copper to remove - Nelson uses the smaller pads with the "spokes" - better, easier soldering.

Not sure about this - maybe add room for a resistor directly across the VR1,2 as the adjustment seems to be a bit sensitive.

Also, suggest" fatten-up" the other tracks too, (maybe double) , as probably plenty of resistor changes, too.

With the "optional extra" C1, you could add a few extra pads for different size caps like Brian, Peter, etc usually do

I like this - somebody doing all the hard work - many thanks.
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Old 30th May 2008, 02:20 AM   #942
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Sorry, perhaps a couple of pads near the V+,V_ input terminals for support, etc.
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Old 30th May 2008, 03:00 AM   #943
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Hi Goffe,

After the modification of the PCB, would you please also post a "Black & White" image for the "trace" side so that I can make it with a laser potter !

Thanks !
Thomas
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Old 30th May 2008, 03:09 AM   #944
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Goffe,

The 6moons article talks about possible oscillation problems when the
output signal interferes with the input. I would suggest
separating the input and output by a larger distance -- such as putting the input on the
opposite side of the jfets from the output.
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Old 30th May 2008, 04:04 AM   #945
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naah. I'm talking about morons who don't have a ground
connection. You guys worry too much.
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Old 30th May 2008, 05:15 AM   #946
Darry is offline Darry  France
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Quote:
Originally posted by tms0425


http://www.firstwatt.com/downloads/F5-om_sm-080527.pdf


Tom

Hello,

Incorrect link ?

Darry
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Old 30th May 2008, 11:04 AM   #947
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Yep, the F5 file is in the article section of FattWrist.

(i'm very well aware i'm a moron, thank you, no need to be so crude)
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Old 30th May 2008, 11:43 AM   #948
tms0425 is offline tms0425  United States
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Quote:
Originally posted by Darry



Hello,

Incorrect link ?

Darry
Yes, my point was to say that link doesn't work, at least for me.
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Old 30th May 2008, 01:08 PM   #949
pencoat is offline pencoat  Canada
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Quote:
Originally posted by jacco vermeulen
Yep, the F5 file is in the article section of FattWrist.

(i'm very well aware i'm a moron, thank you, no need to be so crude)

Are you talking about this one :

http://www.firstwatt.com/downloads/F...%20PassDIY.pdf

?
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Old 30th May 2008, 01:26 PM   #950
Darry is offline Darry  France
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Quote:
Originally posted by pencoat



Are you talking about this one :

http://www.firstwatt.com/downloads/F...%20PassDIY.pdf

?

I think that it is not the same document (service manual).

Darry
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