Wider traces
So why 0.5mm... Both Robert and I are metric persons. That makes use prefer 1mm, 0.5mm, 0.25mm and smaller to the limits of the fabricator/copper...
qdrives
Senior Member
Last Activity: Yesterday, 12:19 PM
Joined: 07-27-2020
Location: The Netherlands
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No, that is a common mistake many people make.
Let's consider a motor controller that needs to drive 25A. You need wide traces to get the current...Leave a comment:
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What kind of noise are you talking about? Audible or electrical or.....?
For electrical it is more the resistance than the composition.
h...Leave a comment:
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Often on boards of Robert, the inner layers are 18um copper (0.5oz) while the outer layers are 35um (1oz). This is due to plating. This also means that...Leave a comment:
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I would use a different color 'background'. The yellow traces a difficult to follow/find.Leave a comment:
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I once heard a story (15 years ago?) about an audio device designer who got mad at the assembly company because they selected 1% resistors and not 5%...Leave a comment:
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Let me ask you another set of questions:
- What is/does your supplier? Is it a design house, a fabricator, assembly company? Do they sell you the...Leave a comment:
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No, for most design(er)s it is:
- Power
- Package size
- Tolerance
- Price
- Stock
Even though I have tolerance...Leave a comment:
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Paul van Avesaath the very first mentioning of "choke" in the trilogy book mentions "storage choke". There goes my explanation.....Leave a comment:
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So if it needs to be "better than" IIIb, it cannot be IIIb, which also means it cannot have a CTI of 150.
Today there was the second...Leave a comment:
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The two reasons that I know for inductors is to either:
- Store energy in an magnetic field
- Suppress changes in current.
Storing energy...Leave a comment:
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Most of the low cost SMD resistors are thick film. These are the cheapest to produce, but not the best (mainly tolerance and temperature stability)...Leave a comment:
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As I stated, the switch signal in the simulation I created needs to high in order to switch on, NOT to Gnd.
If you want it to switch on when connected...Leave a comment:
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I would expect nerve wracking.
I only tried it a bit on a experiment design, not an actual fully done board....Leave a comment:
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So should it be material group IIIb or better than IIIb (i.e. IIIa, II or I)?...Leave a comment:
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From my board I get this (not a normal impedance requirement)
However, I does not state that actual trace widths used, just what the impedance...Leave a comment:
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1) Correct.
2a) Both switch and timer can switch on LEDs. But I do assume that switch and dock are either both connected or neither of them....Leave a comment:
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WhoKnewKnows Like the "Transmission Line Table" ?Leave a comment:
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I am not suggesting to move the switch. I am suggesting to have the LED current remain local. The control signal to drive the LEDs can be remote.
...Leave a comment:
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