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Old 16th January 2009, 02:18 PM   #391
Tea-Bag is offline Tea-Bag  United States
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Quote:
Originally posted by noelectrix
hope i can get immediate help here

my source resistors do measure 0,6 ohms instead of 0,47 ohms. The rings do lable them as 0,47 !

so can i use them and set the voltage across them just a bit higher to get the right bias? Or do I have to search ore suitable ones?

tnx
stefan

(if question s…ks here, gimme a hint)


< 5 ohm resistors don't measure well with most DMM.
Most of mine will measure .6 ot .7ohm.

I would assume they are good and stick with .6v.
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Old 16th January 2009, 02:24 PM   #392
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Quote:
Originally posted by cviller
You're right except for the multiplication... should be 780mV!

yes that what i meant. Dont try this at home
It is stuffed, completet exept the trannies led and R35.
Idon´t need R35 and the led to run it, right?

I have to go to an exhibition in 2 hours, and so I won´t finish it today. It was a pleasure to solder that thing.

Did I mention it anywhere… thanks a lot

stefan
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Old 16th January 2009, 02:27 PM   #393
cviller is offline cviller  Denmark
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Quote:
Originally posted by Tea-Bag




< 5 ohm resistors don't measure well with most DMM.
Most of mine will measure .6 ot .7ohm.

I would assume they are good and stick with .6v.

I think you're right.

Noelectrix, if you want to be absolutely sure, you could measure the rail current with your meter (if i has that option), and then you can see what the corresponding voltage is. You might discover that everything is all peachy!

EDIT: The led is completely optional, but if you have a LED and a >20k resistor, then just put it in for testing.
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Old 16th January 2009, 03:14 PM   #394
CfM is offline CfM  Germany
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My PCBs also arrived today.

Christian, thanks a lot.

Greetings,
Chris:
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Old 16th January 2009, 05:36 PM   #395
zei is offline zei  Sweden
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Got my PCB,s today.

They look fantastic!.



Tackar och bockar.


/JZ
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Old 16th January 2009, 05:53 PM   #396
steenoe is offline steenoe  Denmark
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Quote:
Originally posted by noelectrix
hope i can get immediate help here

my source resistors do measure 0,6 ohms instead of 0,47 ohms. The rings do lable them as 0,47 !

so can i use them and set the voltage across them just a bit higher to get the right bias? Or do I have to search ore suitable ones?

tnx
stefan

(if question s…ks here, gimme a hint)
How did you measure that? A cheap DMM can't measure so low a value precisely I bet that they are in fact 0.47r.
You have to send some voltage through them, and measure the voltage drop across them, if you want them to be precise. Ohm's law rule!. A DMM is much better at measuring voltage

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Old 16th January 2009, 05:57 PM   #397
helfred is online now helfred  Denmark
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My PCBs also arrived yesterday.

Christian, thanks a lot.

Regards,
helfred
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Old 17th January 2009, 08:57 AM   #398
rhysh is offline rhysh  United Kingdom
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PCB'S Arrived this morning, Thanks!
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Old 17th January 2009, 11:43 AM   #399
XELB is offline XELB  Portugal
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Received mine yesterday.
They look great, thanks!
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Old 17th January 2009, 08:51 PM   #400
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both channels working



veery nice trebles…

boards are very nice to adjust with mounted the trannies "under" and the board on top with pots nice to reach.

have to listen now
stefan
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