Timeline for Precision circuit that is CC and CV circuit or power supply
Current License: CC BY-SA 4.0
17 events
| when toggle format | what | by | license | comment | |
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| May 22 at 14:53 | vote | accept | Voltage Spike♦ | ||
| S Sep 20, 2022 at 20:36 | vote | accept | Voltage Spike♦ | ||
| Sep 20, 2022 at 20:36 | |||||
| May 5, 2021 at 17:45 | history | edited | Voltage Spike♦ | CC BY-SA 4.0 |
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| Jun 11, 2019 at 16:44 | vote | accept | Voltage Spike♦ | ||
| S Sep 20, 2022 at 20:36 | |||||
| Jun 11, 2019 at 16:44 | vote | accept | Voltage Spike♦ | ||
| Jun 11, 2019 at 16:44 | |||||
| Apr 17, 2017 at 16:29 | vote | accept | Voltage Spike♦ | ||
| Jun 11, 2019 at 16:44 | |||||
| Apr 12, 2017 at 22:26 | comment | added | Voltage Spike♦ | Usually my requirements are in the uV or nV range so I don't think a set point accuracy in the 10uV range will be a problem. We'll probably calibrate the circuit. A 10 Ohm 0.01% resistor is expensive but it can save you a lot on calibration and give you accuracy. | |
| Apr 12, 2017 at 22:15 | comment | added | jonk | @laptop2d For temperature, you pay for a few exact calibration points (say 5 or 6) and in between you have to figure out the worst case deviations in order to provide specifications to the customer. If you support a wide-range of currents, you will have your own non-linearity issues to figure out, as well. This 0.1% thing is achievable. So is 0.01%. But I have to tell you that those 0.1% pieces of equipment were expensive and the 0.01% pieces were nearly sky-high (at the time, 20 years ago.) I used them, too, because we needed precision current to operate electron beams for IC wafer masks. | |
| Apr 12, 2017 at 22:08 | comment | added | jonk | @laptop2d I've specialized in temperature measurement. People want accuracy as well as precision as well as repeatability between instruments. You get nothing but pain from customers if they buy 5 instruments and measure the same freeze point with all 5 and get different values. Whether or not they are willing to pay for that, is another matter. But it's what they want. Had to maintain NIST traceable standards, usually only one step away (we didn't hire NIST, but hired someone who did.) | |
| Apr 12, 2017 at 21:54 | comment | added | Voltage Spike♦ | @jonk I don't know if this needs to be nist tracable, but I need to think about that, Thanks | |
| Apr 12, 2017 at 19:32 | comment | added | jonk | Interesting question. Even assuming temp-stabilized, I'm still stuck on the difficulty of accurate and 0.1%. How exactly will this be calibrated to NIST traceable standards and then maintained against drift over time? Precision is one thing. Accuracy yet another. | |
| Apr 12, 2017 at 18:45 | answer | added | Voltage Spike♦ | timeline score: 1 | |
| Apr 12, 2017 at 17:15 | answer | added | D.A.S. | timeline score: 2 | |
| Apr 12, 2017 at 16:33 | history | tweeted | twitter.com/StackElectronix/status/852197906257981440 | ||
| Apr 12, 2017 at 16:15 | answer | added | Neil_UK | timeline score: 10 | |
| Apr 12, 2017 at 16:09 | answer | added | user76844 | timeline score: 3 | |
| Apr 12, 2017 at 15:54 | history | asked | Voltage Spike♦ | CC BY-SA 3.0 |