Timeline for Precise Current Limiting for Variable 0–300VDC Supply
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Apr 25, 2017 at 2:19 | comment | added | user133493 | I believe we discussed the cutoff issue in the comments to the question before you posted. You may have missed it. At any rate, your excellent and instructive answer will surely be useful to others - it was to me - so I don't think it was wasted effort. | |
| Apr 25, 2017 at 1:27 | comment | added | Bruce Abbott | At 50mA the supply ripple would be ~2.7V or 0.9%. A capacitor on the pot wiper would reduce this ripple, but the question was about how to 'precisely limit the current... within a 5mA maximum deviation from the desired maximum value', not how to improve voltage stability. However the OP now says that voltage regulation is most important (when the circuit he supplied has none) and is asking for a way to cut the power (like a fuse) if current goes over the limit - a quite different function. So it seems all the time and effort I put into answering his question was wasted... | |
| Apr 25, 2017 at 0:20 | comment | added | user133493 | In similar designs one can find an RC filter after the bridge rectifier for further smoothing and something like 1uF from the wiper to ground. How would you recommend for the OP to assess whether these would help in his application? | |
| Apr 23, 2017 at 17:38 | vote | accept | Jack Lynch | ||
| Apr 23, 2017 at 10:16 | history | answered | Bruce Abbott | CC BY-SA 3.0 |