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Old 10th March 2012, 02:25 AM   #991
Rush is offline Rush  United States
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Default Fairchild 19N20 and 12P20

Teabag is true to his word!
When I got home today from a week of traveling, I have 4 pairs of Fairchild 19N20 (4 matched) and 12P20 (2 and 2 matched) outputs.
I will be glad to test the board.

UKToecutter, I will PM you to give you my address.

Can't wait!

Rush
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Old 10th March 2012, 02:31 AM   #992
a.wayne is offline a.wayne  United States
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Tea bag shipping trannies ..Taking orders ..... ?
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Old 10th March 2012, 10:30 AM   #993
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Hmmm,

I wonder how many he has....

Didn't somebody mention 'a truck load' a few pages back?
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Old 10th March 2012, 03:17 PM   #994
jj506 is offline jj506  Taiwan
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UKToecutter,

Check BOMs , R26 should be 10k=R25

JJ
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Old 10th March 2012, 03:21 PM   #995
jj506 is offline jj506  Taiwan
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UKToecutter,

Can you put each board size on the file, thanks.

JJ
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Old 10th March 2012, 05:37 PM   #996
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Quote:
Originally Posted by jj506 View Post
UKToecutter,

Check BOMs , R26 should be 10k=R25

JJ
JJ,

Check Papa's schematic. R26 is definately 47.5k

Andy
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Old 10th March 2012, 05:38 PM   #997
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Quote:
Originally Posted by jj506 View Post
UKToecutter,

Can you put each board size on the file, thanks.

JJ
Sure, no problem
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Old 11th March 2012, 02:33 PM   #998
Rush is offline Rush  United States
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Default F5 V2 BOM

Andy,

I was looking at the BOM for the V2 and I think R3 & R4 (10 ohms) should be 1 watt. At least they were in the standard F5. It may be hard to get 1 watt resistors in the space provided, but I will stand them up if needed.
That's the only thing I see so far.

Rush
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Old 11th March 2012, 02:56 PM   #999
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Rush,

I have found a Vishay Dale 1W 10R resistor that is 7.37mm long so that should fit lying down.
I'll check the original F5 documentation and change the BOM's.
Thanks

Andy
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Old 11th March 2012, 03:16 PM   #1000
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Rush

Have a look at this post....

F5 power amplifier

and this one;

F5 power amplifier

I think you're right. We'll go for 1W

Andy
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