Transformer isolation and opto-isolation are totally un-necessary if you follow the simple AC power and bonding rules in the two tutorials I cited in the headphone thread. 73, Jim Brown K9YC ________
Jim, Are you referring to this: http://www.audiosystemsgroup.com/RFI-Ham.pdf ? That is 66 pages of stuff that would take an EE degree to fully understand. Or are you referring to a much more condense
Yes, also the Ham Interfacing pdf. Not really. In fact, it is written for hams WITHOUT a college technical education, but who have done at least some studying of electronics and how radio works. You
Well... kinda... There IS a bit of relativity to all of this. What may seem elementary to an electrical engineer, may still, in turn, seem like a totally foreign language to another with a vastly dif
My background is pretty deep on the electronics engineering side. In reading over Jim's material, it was not hard for me to digest. However, in my field, communications, I often encounter people who
My point is this: Jim wants people to stop using isolation circuits and his "carrot" to them is simply to tell them to do it the "right way" and the right way is to go study 66+ pages of technical ma
Not true. I specifically pointed you to two small portions of the tutorial, each only a few pages. I'm simply trying to help hams who are always crying "poor" to save their hard earned money. Nothing
Ha ! Interesting perspectives, Phil. Based, I am sure, on much real world experience. Legal clients are the same way... they want a one sentence answer to a complex question, or no explanation at all
I understand and appreciate your angst... but if I understand Jim's position correctly, he advocates rooting out the cause of the problem, rather than putting a bandage on it - even if the bandage is
To chime in on the subject, I think Jim has done a real good job explaining some subject matter that is mystifying to most hams. He debunks a lot of myths and steers people in the right direction for
I certainly agree that Jim did a fantastic job and certainly the benefit of his experience is appreciated by many, myself included. This exchange does remind me of "The little Red Hen." While everyon
Thanks Wes. Yes, you've hit it exactly right -- because the fundamentals of how ferrites behave is so different from what most hams (and most engineers) have long thought, it was necessary that I go