Re:Learn electricity and electronics fundamentals without ta...
by neuroelectron on Saturday April 05, 2025 @05:52PM
(#43597103)
OK I get how they work conceptually, I get how they work physically, but when I actually try to build a circuit with them it never works.
Re:Learn electricity and electronics fundamentals without ta...
by ohgr on Saturday April 05, 2025 @06:31PM
(#43597351)
You clearly missed something in the former or latter or do not know how to verify if stuff is as expected.
Usually I build out the DC bias model (static operating point), test it in LTspice, then add the AC/small signal model on top. Or large signal model for switching etc. Everything generally works unless I did something stupid or it’s RF where things get a little less predictable.
If you really want to know how transistors work and how to use them properly it’s going to be difficult as they sit on a fairly large pile of algebra and theory. If you don’t know this you might be able to get simple circuits working by cutting and pasting bits but you won’t be able to get past that ever.
The best references on this are actually The Art of Electronics. Not necessarily the main book but the associated student manual. Also the book Experimental Methods in RF Design by Wes Hayward actually has the most useful functional description and modelling approach of transistors.