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Best resistors For I/V Conversion?
Best resistors For I/V Conversion?
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Old 25th March 2016, 08:30 PM   #31
UMarcus is offline UMarcus  Germany
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Best resistors For I/V Conversion?
I prefer Rhopoint GG102 Squaristor over TX2575 in DDDAC 1794 as I/V Resistor.
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Old 25th March 2016, 11:18 PM   #32
Damon Hill is offline Damon Hill  United States
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Quote:
Originally Posted by UMarcus View Post
I prefer Rhopoint GG102 Squaristor over TX2575 in DDDAC 1794 as I/V Resistor.
Very good specifications, closely approaching bulk foil resistors; adding them to my list since their form factor is nearly identical (probably intentional).

Caddock makes excellent thin film and possibly thick film resistors with excellent specifications and some audiophile popularity; my only quibble is their larger size and somewhat limited availability. Doubtless there are more resistor types out there from cost-effective to expensive high performance types.


--Damon
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Old 26th March 2016, 12:19 AM   #33
Eldam is offline Eldam  France
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Allen Bradley is strangly very good here as well!
Shinko works fine.

Remember Peter Walker used to putt a Cadock with the TDA1543... read it here somewhere in a long thread about the best rťsistors (no I/V mentioned in the title but talked in the thread)
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Old 26th March 2016, 05:30 AM   #34
canvas is offline canvas  Taiwan
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I never tried Caddock for I/ V, but I found Caddock works great in cross network. Caddock is my 1st choice for high wattage resistors.
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Old 5th November 2017, 11:53 PM   #35
VtinoAJV is offline VtinoAJV
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Have anyone tried Arcol RCC025 carbon composite compound? any idea how is it compared to Allen Bradley, or ohmite carbon composite resistors?
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Old 24th June 2018, 07:41 AM   #36
Dhruv Meena is offline Dhruv Meena
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Quote:
Originally Posted by Conrad Hoffman View Post
I'm a big fan of wire wound resistors for precision applications, but there's no such thing as a zero inductance wire wound resistor, and some winding techniques also produce significant stray capacitance. I'd be a bit leery of using them for high bandwidth I/V conversion. The bulk metal foil resistors best wirewounds in just about every way except maybe peak power handling, and I'm not even sure about that. A decent metal film like an RN55 or 60 type is also no slouch. The value of the resistor would affect my choice of type. For low values the wire wound can be excellent. For mid values the bulk metal foil or MF wins, and for high values the MF is the logical choice. Don't go near thick film, carbon film, carbon, or MOX resistors due to instability, noise and non-linearity with voltage, in spite of sometimes excellent HF performance.
Bro, I do the same thing
Wirewound rhopoint gg102a for below 100
TX2575 above that
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Old 3rd July 2018, 12:12 AM   #37
steveu is offline steveu  United States
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I think these are relevant and instructive vs the choice of resistor types:
"http://www.analog.com/media/en/training-seminars/tutorials/MT-019.pdf"

"http://www.ti.com/lit/ug/tidu022/tidu022.pdf"

The inductance of a wire wound resistor in series with a nul point input would tend to filter digital glitches but there are many better ways, the best of which would probably be a sample and hold.
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Old 3rd July 2018, 04:56 AM   #38
gentlevoice is offline gentlevoice  Denmark
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Best resistors For I/V Conversion?
Quote:
Quote:
Originally Posted by UMarcus View Post
I prefer Rhopoint GG102 Squaristor over TX2575 in DDDAC 1794 as I/V Resistor.
Very good specifications, closely approaching bulk foil resistors; adding them to my list since their form factor is nearly identical (probably intentional).
Hi ... I have listened to both the squaristor and Charcroft version of the TX2575 and they are somewhat different to my ears. The Charcroft is very clean and open - extended - and appears to have very little coloration, neutral. The squaristor (again to my ears) has more midrange tonal bloom & level, however, seemed to have an upper midrange/treble "tizziness" compared with the Charcroft. Very musically sounding.

Cheers,

Jesper
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Old 4th July 2018, 04:24 AM   #39
sumotan is offline sumotan  Indonesia
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Wow you guys are still at it ya. lol. Thereís really no best resistors, by itself it may be the best but in used it may not sync well with the rest. So its lots of testing for you to find out what works best for your set up.
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Old 6th July 2018, 12:14 PM   #40
DF96 is offline DF96  England
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Quote:
Originally Posted by VtinoAJV
Have anyone tried Arcol RCC025 carbon composite compound? any idea how is it compared to Allen Bradley, or ohmite carbon composite resistors?
Any carbon comp resistor is likely to introduce distortion, and possibly excess noise too; could make CD sound like LP!
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