| Electronics > Projects, Designs, and Technical Stuff |
| Yet another resistance decade box |
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| iromero:
This is a great cheap project, i just ordered some boards and switches. I wonder what the tempco of the resistors in the kit is. |
| Fortran:
It's ±100ppm/°C CRCW1206 http://www.vishay.com/docs/20035/dcrcwe3.pdf The 0.1% was much better. Also much more expensive for some reason :) |
| TheAmmoniacal:
--- Quote from: Fortran on July 13, 2016, 01:11:26 pm ---It's ±100ppm/°C CRCW1206 http://www.vishay.com/docs/20035/dcrcwe3.pdf The 0.1% was much better. Also much more expensive for some reason :) --- End quote --- Which 0.1% resistors did you use? |
| Fortran:
A few different actually. The ones I linked in the beginning of the thread was out of stock. All have the same specs though. ±25ppm/°C http://www.yageo.com/documents/recent/PYu-RT_1-to-0.05_RoHS_L_6.pdf |
| Iwanushka:
--- Quote from: Fortran on July 13, 2016, 02:29:04 pm ---A few different actually. The ones I linked in the beginning of the thread was out of stock. All have the same specs though. ±25ppm/°C http://www.yageo.com/documents/recent/PYu-RT_1-to-0.05_RoHS_L_6.pdf --- End quote --- 25ppm is quite good for this project, and switch resistance does not matter we can always use der ee 500 to check actual value, I hope you will make new order soon :) |
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