Kurt -
You may be correct but we'll never know unless someone inside SolarEdge speaks
out.
Don't overlook the economic aspect. A solution to RFI might exist but it's
more costly than SolarEdge wants to accept. Hams are a tiny part of their
market.
W9IP
-----Original Message-----
From: RFI <rfi-bounces+nlsa=nlsa.com@contesting.com> On Behalf Of KD7JYK DM09
Sent: Wednesday, February 08, 2023 1:58 AM
To: rfi@contesting.com
Subject: Re: [RFI] k SolarEdge's "improved" system?
On 2/7/2023 18:55, NA6MB Mike wrote:
> They have been “working on” a new system / quieter system for several years
> now!
When I worked in prototyping, we had a fellow, that designed switching mode
power supplies. From idea, to design, to completed project, was about three
months, and most of that was waiting for others with monstrous backlogs. In
reality, it took about a week for him to come up with a design. That was one
guy, 23+ years ago, and having to hire out for assembly, compliance testing,
and certification.
I recall one time when an on-board supply didn't pass, another fellow had to
come up with a patch, and instructions for me to build/verify before sending it
to the manufacturer. That took about five hours, three before lunch, two
after, and about a half-dozen attempts. Once verified, the fellow grabbed the
modification sheet and ran out of the lab. I heard no more, the supply was
perfect.
I'd imagine, nowadays, with the personnel, and resources of an average sized
company, much more than a week or two for a solution, maybe a month at the
outside, with most of that just standing around, is purely jerking people
around, waiting for someone else's problem to go away.
A fellow asked earlier about the model, or information regarding a new quiet
system. It hardly matters. If quiet, then all new ones will be quiet from the
first quiet new build onward, the problem will no longer exist. If an old one
isn't, the replacement will be quiet, once the manufacturer is notified of an
issue, as all they will have on-hand is quiet replacement units.
Should a quiet system actually exist, perfect, problem solved- FOREVER.
Quiet modules won't be back-engineered into RFI spewing problematic garbage,
and noisy units will fail, or get swapped out upon notification, so,
ultimately, in the end, RFI silence.
I wouldn't hold my breath, rely on it, or even imagine there being a valid
solution, or it would have existed within days, to weeks of the issue coming
up, and, so far, based on comments in the forums, as recently as the last one,
solar edge has had RFI problems since their inception. If you have solar edge
based RFI, and had just one guess as to why, you'd almost certainly be right:
The issue exists, because a solution does not.
Kurt
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