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Rohde & Schwarz NGE100 Power Supply
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Topic: Rohde & Schwarz NGE100 Power Supply (Read 882 times)
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Scutarius
Regular Contributor
Posts: 108
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Rohde & Schwarz NGE100 Power Supply
«
on:
August 24, 2022, 02:40:35 pm »
Hi,
I have a power supply with both channels blew up, Dave's teardown has a good capture of the area
https://youtu.be/Z6F7Pwi6WLI?t=1174
What it looks to be the current sense resistor is totally damaged, does anyone here can confirm that it is a R050 metal foil resistor?
I can barely read the marks
R050 F
L4344
Any suggestions on the tolerance, 0.1%? Is the green material always an indication of a metal foil resistor?
Thanks,
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thm_w
Super Contributor
Posts: 7361
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Re: Rohde & Schwarz NGE100 Power Supply
«
Reply #1 on:
August 25, 2022, 11:27:52 pm »
R050 F
H204R (unsure about the 4)
Can you measure the package size to help narrow it down.
Metal foil.
F might be 1%:
https://www.yageo.com/upload/media/product/productsearch/datasheet/rchip/PYu-PE_521_RoHS_L_10.pdf
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Last Edit: August 25, 2022, 11:30:23 pm by thm_w
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Scutarius
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Re: Rohde & Schwarz NGE100 Power Supply
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Reply #2 on:
August 26, 2022, 01:36:18 pm »
Hi thanks!
it is ~3.15x6.3 mm
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thm_w
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Re: Rohde & Schwarz NGE100 Power Supply
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Reply #3 on:
August 26, 2022, 10:01:56 pm »
Thats 2512 package (0.25"x0.12").
If you can't find the exact part, there is a ohmite 0.5% 50ppm for $1.50 on digikey (PCS2512DR0500ET).
Would expect thats good enough.
Next question is how to recalibrate the current readings.
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Last Edit: August 26, 2022, 10:03:52 pm by thm_w
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Scutarius
Scutarius
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Re: Rohde & Schwarz NGE100 Power Supply
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Reply #4 on:
August 29, 2022, 01:55:18 pm »
Thanks
and assuming this no other damaged component...
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