Hello, I made 100R wire wound resistor with
0.08mm 114cm Manganin wire.
I have replaced on signal path resistor,
It's messy made and not stable.
0.08mm wire is so thin and fragile.
Actually it sounding pretty good.
Are there any advice or any experience?
0.08mm 114cm Manganin wire.
I have replaced on signal path resistor,
It's messy made and not stable.
0.08mm wire is so thin and fragile.
Actually it sounding pretty good.
Are there any advice or any experience?
Attachments
If this is for a load for a MC cartridge, the size and leads will increase the noise significantly.
Not sure how can you know *the resistor*
You post not schematic, not sure what is it actually doing in that circuit.
"A Nelson Pass amplifier" is not enough.
IF amp has highish input impedance, as I guess (>5k?), 100 ohm in series will do nothing.
Why do you think a low value wirewound resistor is needed there?
What problem are you trying to solve?
Not sure how you mount it, care to show a picture?.
You definitely added an inductor and an electromagnetic antenna at a sensitive point.
You post not schematic, not sure what is it actually doing in that circuit.
"A Nelson Pass amplifier" is not enough.
IF amp has highish input impedance, as I guess (>5k?), 100 ohm in series will do nothing.
Why do you think a low value wirewound resistor is needed there?
What problem are you trying to solve?
Not sure how you mount it, care to show a picture?.
You definitely added an inductor and an electromagnetic antenna at a sensitive point.
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To develop a voltage across it 😀
(sorry, couldn't resist ...... oh shoot there I go again 😛😀)
Not sure why the OP didn't just buy a decent 100r ............. 😕
Yes. It is important for that input resistor to have low inductance and low parasitics,
such as small size and short leads. It is best mounted adjacent to the input gates,
after the 100k, instead of before it.
such as small size and short leads. It is best mounted adjacent to the input gates,
after the 100k, instead of before it.
Yes, a bulk material resistor is best for low inductance. Some even use carbon composition types.
Because of the wound nature of your resistor, it will act as an inductor.
Your resistor will have poor high frequency performance.
The type of alloy is secondary to that issue.
Manganin wire is often seen used for its stabile characteristics in high quality metrology instruments, but achieving the level of stability often seen published requires a high level of expertise in fabricating manganin resistors. I suggest using manganin is not an applicable path to take for the OP's application or for a diyer.
The resistor coil will also have a self-resonant frequency, and will nosedive above that.
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Actually I wanted to try rhopoint Manganin wire wound resistors but 30 minimum order.
Zfoil and Manganin film are too bright in sound for me.
So very small inductance make sound smoother.