Hi friends,
By reading various pages on the capacitors best orientation (meaning how to locate the outer foil), I had found a person who had also tested the resistors orientation just after having tested the capacitors orientation.
But I cannot find again this article ...
If some of you knows articles talking about this, I am interested !😛
Thanks,
By reading various pages on the capacitors best orientation (meaning how to locate the outer foil), I had found a person who had also tested the resistors orientation just after having tested the capacitors orientation.
But I cannot find again this article ...
If some of you knows articles talking about this, I am interested !😛
Thanks,
Hi friends,
By reading various pages on the capacitors best orientation (meaning how to locate the outer foil), I had found a person who had also tested the resistors orientation just after having tested the capacitors orientation.
But I cannot find again this article ...
If some of you knows articles talking about this, I am interested !😛
Thanks,
As stated somewhat less kindly in a previous post conventional 2 terminal resistors are not orientation sensitive..
And (just to add to the pile-on) many people think/feel/believe that with modern capacitors, the orientation doesn't matter. (Most modern caps don't even have the 'foil' marking, IME.)
Even in old gear, the 'foil' orientation on the paper/wax caps was only used in RF equipment (and not always, even then).
Even in old gear, the 'foil' orientation on the paper/wax caps was only used in RF equipment (and not always, even then).
Many of the film resistors have spiral grooves in the film for higher values of resistance. Some claim an advantage to using two in inverse parallel to reduce the inductance. Theoretically that exists, the valid issue would be if that is enough of a difference to be heard.
Capacitors should of course be used with the outer foil at ground potential and if driven then the outer foil to the drive side.
Capacitors should of course be used with the outer foil at ground potential and if driven then the outer foil to the drive side.
The main reason to orient resistors all the same direction is that it looks neater when you are done.
I have heard this too, but honestly how much mutual inductance is there going to be between two spiral cut resistors next to each other, since they are not on a common core? I would expect it to be singularly ineffective.. Blackgate advocated this for some of their non-polar caps based on the idea that the ESL would cancel - and I have exactly the same objection to it.. 😀
Two of the same inductors in parallel have half the inductance to start with! Any extra reduction is a bonus!
There is a standard for orienting resistors. 1st band to the left or top!
I was also hopeful someone would know about the article asked about. Sometimes in what seems quite silly there is a bit of interesting information.
Except that when you turn a resistor round, the spiral still has the same orientation.
Not that I believe one second it could make any difference, but it shows the reasoning is flawed, and any effect attributed to it has to be imaginary.
Solution: create "chiral" resistors, with suffix -L and -R (and make big bucks in the process)
They could be be placed side by side, but with the connections crossed over to generate a reversed cancelling field.
But I like the idea of boutique clockwise and anticlockwise devices to market for L and R channels.
How about making "precision" standoffs to orientate the device parallel or perpendicular to the dip in the Earths magnetic field, which is more vertical than horizontal in Northern Europe
But I like the idea of boutique clockwise and anticlockwise devices to market for L and R channels.
How about making "precision" standoffs to orientate the device parallel or perpendicular to the dip in the Earths magnetic field, which is more vertical than horizontal in Northern Europe
I would so love to have mirrored parts available, especially transistors. It's incompatible with my (imagined) OCD when building mirrored channels and that darn FETs break the symmetry.
Proper orientation of capacitors makes sense, but resistors...I believe there are bigger fish to fry. But that's not saying I wouldn't read an article on effects resistor orientation... Unfortunately Google didn't turn up anything.
And while we're at it, is there a downside to those Mills MRA non-inductive resistors? More stray capacity perhaps?
Proper orientation of capacitors makes sense, but resistors...I believe there are bigger fish to fry. But that's not saying I wouldn't read an article on effects resistor orientation... Unfortunately Google didn't turn up anything.
And while we're at it, is there a downside to those Mills MRA non-inductive resistors? More stray capacity perhaps?
Yes if you wire matching ends, but if you cross wire then the "coupling" should show up! Just don't expect very much.
But don't tell me it doesn't make a difference unless you have actually done measurements. I am perfectly willing to believe you if you tell me you can't hear a difference.
I'm sure I could easily measure the difference using a good VNA and some averaging (and perhaps I will, one of these days).
But being able to measure something doesn't mean it impacts the sonic response.
If I paint a capacitor blue, sure it will have a huge measurable effect on an OSA. Which doesn't mean it will sound different (except of course, if the paint has an organic solvent and the cap is polystyrene, but that's we call a measurement bias).
????????????
Which is it- measurements or hearing?
Silly me- I thought that in science the onus is on the proposer of a novel idea to extend some proof.
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Good Grief!
A few nanohenries of inductance?
Why are you even discussing this?
It's silly to think that such a small amount of inductance could have any effect on an audio amplifier.
A few nanohenries of inductance?
Why are you even discussing this?
It's silly to think that such a small amount of inductance could have any effect on an audio amplifier.
Actually it can be as high as 500nH. Some small value wirewound resistors have enough inductance so LR resonance is below 100 Khz!
Measuring inductances in the nH range is hard. But it is within the realm of possibility that an ignored inductive component of a resistor can produce enough problems downstream that there could be artifacts to be heard. It is however not very likely.
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