Yes... JFETs are extremely variable on their parameters so circuits using them need trimming of the external components if one needs a certain degree of precision. That, or negative feedback.
On Saturday, April 8, 2017 at 12:02:25 AM UTC-3, gregebert wrote: > > My concern with current limiters that rely heavily upon the datasheet > specs (Vgs for Depletion-mode regulator; Vbe for current-mirror) is that > variations due to process & temperature will have significant impact on the > actual current. Using a slightly more complex+costly design will mitigate > this; well-worth it in my opinion when you consider the value of the tubes > you are protecting. > > > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/54ea6325-162e-4425-9302-cab67a67558c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
