Electronics > Beginners
Amprobe resistor identification
David Hess:
--- Quote from: Captnshacky on May 08, 2019, 10:37:56 am ---Will it matter that its 10% and not 5%? Thanks
--- End quote ---
No, it will not matter.
I also think it is 1k 5%. It is some sort of flame proof or fusible resistor for safety and overload protection.
retiredcaps:
--- Quote from: Captnshacky on May 08, 2019, 10:37:56 am ---Will it matter that its 10% and not 5%? Thanks
--- End quote ---
Modemhead's blog that I linked tells you why.
http://mrmodemhead.com/blog/fluke-87-fusible-resistor/
"The replacement I’ve selected is a 1kΩ 2W Vishay metal-film fusible resistor. It is 5% tolerance instead of the original 1%, but the value of this resistor does not affect the calibration. (It is in series with the voltage divider’s 10 Meg input impedance, which far outweighs any variations in this resistor.)"
Captnshacky:
R2C is open. You assume correct. Thanks for the help
retiredcaps:
Since RC2 is open, it's prudent and very quick, qucker for you test, than for me to write this out, PTC, SPG1, SPG2 and SPG3.
The PTC should be around 1k ohm. SPG1, 2 and 3 should all measure open circuit.
Captnshacky:
--- Quote from: retiredcaps on May 08, 2019, 11:05:22 pm ---Since RC2 is open, it's prudent and very quick, qucker for you test, than for me to write this out, PTC, SPG1, SPG2 and SPG3.
The PTC should be around 1k ohm. SPG1, 2 and 3 should all measure open circuit.
--- End quote ---
all correct 1.7k ohms on PTC Thank you so much for the help. :)
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version