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Old 6th October 2003, 04:45 PM   #1
purer is offline purer  China
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Default pass a30 pcb

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China Pass diy club http://www.cndiyclub.com/bbs/list.asp?boardid=7
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Old 6th October 2003, 05:31 PM   #2
moe29 is offline moe29  United States
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what part would go here? This looks to be an IC socket of some
kind??
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Old 6th October 2003, 05:55 PM   #3
hifi is offline hifi  Sweden
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I would guess thats just a jumper conecting the traces?

Anyway the Gate resistors are placed far away from the gates of the Mosfets (long trace) with is not a particulary good idea Im afraid..

/ Micke
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Old 6th October 2003, 05:56 PM   #4
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I think those are vias for high current use (linking the thick track)

cheers
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Old 6th October 2003, 06:06 PM   #5
BrianGT is offline BrianGT  United States
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I like this (from the link posted)

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--
Brian
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Old 6th October 2003, 06:28 PM   #6
grataku is offline grataku  United States
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I found this:
what's there NOT to like?

Plus they are ripping pictures off this website and have not much regard for copyrights either.
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Old 6th October 2003, 08:28 PM   #7
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Talking 24 steps DIY attenuator info

Brian:

What you see is a DIY attenuator available in Taiwan. The price is about $25 ~ $30 USD, but you need to assemble yourself.

The site that sell it is here:
http://www.my3c.net/product/detail.a...=&Sort=&Price=

The assemble DIY page is here:
http://www.diyzone.net/article.php?sid=369

It also has a page that allows you to calculate different value for your resistance needed, though all are in Chinese. If anyone needs help in translation, I will be glad to help.

The do sell and ship international, but the shipping is about $25 USD, which is high for one item; however, the shipping is fixed to any parts you buy!

Thomas
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Old 6th October 2003, 08:59 PM   #8
skilpad is offline skilpad  South Africa
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I have to agree with hifi
This is often used to "jumper" between layers
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Old 7th October 2003, 12:42 AM   #9
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Quote:
Originally posted by hifi
I would guess thats just a jumper conecting the traces?

Anyway the Gate resistors are placed far away from the gates of the Mosfets (long trace) with is not a particulary good idea Im afraid..

/ Micke
Yes,that's a jumper.
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Old 7th October 2003, 04:49 AM   #10
purer is offline purer  China
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Default that's a jumper

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Old 7th October 2003, 05:17 AM   #11
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Well, they do have style....
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Old 7th October 2003, 08:56 AM   #12
hifi is offline hifi  Sweden
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Am I the onlyone conserned with the approx 2-7cm gate resistor traces?...


/ Micke
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Old 7th October 2003, 09:02 AM   #13
uli is offline uli  Austria
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Default traces

I would consider them ok!
There are no other traces interfering them



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Old 7th October 2003, 09:15 AM   #14
hifi is offline hifi  Sweden
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hello!

But they still have inductance ... right?

And that makes them in to nice RCL circuits with the gate capacitance and gate resitors.


/ Micke
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Old 7th October 2003, 09:31 AM   #15
uli is offline uli  Austria
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Default inductance

I would not be too concerned about the inductivity of a trace
of about 2 inches nearly straight !

I bet you wont be able to measure it

We are not talking UHF here!


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