Inductors in Disguise

RE: Inductors in Disguise

dang74 — Tue, 10 May 2022 14:05:19 GMT

I found it very satisfying that your calculated inductance matched the results from your VNA. So many times unseen factors cause our observed results to differ widely from our expectations. So we should take a moment to appreciate those times when the universe lines up in our favour because they are few and far between.

RE: Inductors in Disguise

DAB — Thu, 28 Apr 2022 20:23:13 GMT

Understanding your components is key to a good design.

I had not thought about a wire wound resister being an inductor, but it did make sense as I read your post.

Well done.

RE: Inductors in Disguise

shabaz — Wed, 27 Apr 2022 16:42:50 GMT

Great blog! I've been super-impressed with coil64, in the past up until a few months ago I'd use spreadsheets with formulas for coils, but coil64 has given very good results with each scenario I've tried with it.

For RF work there are expensive RF resistors, but another option (the cheaper/simpler option I go with) is as you say to just use normal thick film resistors - e.g. to buy a few hundred 49.9 ohm and 100 ohm standard thick film resistors, and then just measure them if the ultimate accuracy is needed (usually not).