Author Topic: C5-60T precision wire-wound resistor  (Read 2025 times)

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Offline shodan@micron

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C5-60T precision wire-wound resistor
« on: June 15, 2021, 01:15:12 pm »
void
« Last Edit: July 14, 2021, 05:17:52 pm by shodan@micron »
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Offline doktor pyta

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Re: C5-60T semi-precision wire-wound resistor
« Reply #1 on: June 15, 2021, 03:43:59 pm »
Why semi-precision?
I'd say that hermetic sealing give them long term stability and make them suitable for metrology-grade applications.
P.S. I own 4 of these, all with T.C. of about 1ppm/C.
« Last Edit: June 15, 2021, 03:48:53 pm by doktor pyta »
 

Offline Mickle T.

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Re: C5-60T semi-precision wire-wound resistor
« Reply #2 on: June 15, 2021, 06:26:40 pm »
No problem to buy a slightly better "thing" :)
 

Offline TimFox

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Re: C5-60T semi-precision wire-wound resistor
« Reply #3 on: June 15, 2021, 08:45:28 pm »
The digital readout on the meter is a good example of why we must be careful with majuscule and minuscule prefixes:
1 P \$\Omega\$ = 1 kV / pA = 1 V / fA.
 

Offline branadic

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Re: C5-60T semi-precision wire-wound resistor
« Reply #4 on: June 16, 2021, 07:52:57 am »
Looks like they used some insulator made out of PEEK. Could you take a detailed picture of how the leads are attached to the bobbin and how they attached the wire to the leads? Thanks.

-branadic-
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Offline wan1788

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Re: C5-60T semi-precision wire-wound resistor
« Reply #5 on: June 16, 2021, 08:22:33 am »
Looks like they used some insulator made out of PEEK. Could you take a detailed picture of how the leads are attached to the bobbin and how they attached the wire to the leads? Thanks.

-branadic-
In the third photo of the second post, there are folding petals.  They are clearly visible on the side cage. The resistor leads are made of magnetic material and have a high thermo efm.
 

Offline ramon

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Re: C5-60T semi-precision wire-wound resistor
« Reply #6 on: June 16, 2021, 11:44:32 am »
I have count 160 turns. What is the diameter of the ceramic core? And the length between the first turn and the last one?
« Last Edit: June 16, 2021, 11:51:21 am by ramon »
 

Offline ramon

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Re: C5-60T semi-precision wire-wound resistor
« Reply #7 on: June 16, 2021, 02:41:28 pm »
Thank you so much !!!

This reminds me some experiment I made some time ago. Will need to find time to continue ...



« Last Edit: June 16, 2021, 02:43:14 pm by ramon »
 
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Offline ramon

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Re: C5-60T semi-precision wire-wound resistor
« Reply #8 on: June 16, 2021, 02:56:13 pm »
If the number of turns is correct, then I think that it should be 0.025mm wire.

    2*Pi*((7.487-0.025-0.025)/2) * 160 turns = 3.738 meters
    3.738 m * 2689 ohms/m = 10,052 ohms !
« Last Edit: June 16, 2021, 03:04:27 pm by ramon »
 

Offline ramon

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Re: C5-60T semi-precision wire-wound resistor
« Reply #9 on: June 16, 2021, 03:32:57 pm »
Interesting   :popcorn:
 

Offline Andreas

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Re: C5-60T semi-precision wire-wound resistor
« Reply #10 on: June 20, 2021, 08:49:23 am »
Hello,

not bad result.
for me additionally interesting would be if there is any hysteresis (or permanent shift) when cycling back to cold values.

with best regards

Andreas
 


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