Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Hi,
It depends on the frequency...RC use 27, 35, 41 and 72MHz.
I always use surplus T/o/k/o coils from junk.
For a 7mm T/o/k/o sheilded coil 5 turns give about 0.3µH and 8 turns give 1.0µH. There is a +-20% tunning rage. For example for 72MHz a 0.27µH with 18pF will work. Wind the primary starting at the bottom two slugs (5 or 8 turns) and the secondry (usually 2 turns) at the third.
You will understand what I mean if you have already played with these coils. Or just write to T/o/k/o with your requirement and they will send you free samples
thanks hadihf
i think 2K159 is 1µH (deduction based on some schematics) but i'm not sure, because of parasitic capacitance in tracks
but i cant read value with my LCR meter even if it can reach down to 0.1µH , maybe test frequency is too low ???
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.