Thanks, but the concern here is , not for myself, but for the owners of electronics companies who are throwing their money away for no reason, as i explain above.
I feel sorry for them, and am driven to help them.
Also, because they make less money, they pay less in taxation, which hampers the rest of us.
...And i know the electronics company owners are not stupid, ..they are making fortunes middle-manning in the Chinese electronics....but they could stop loosing so much money in their British "token" electronics business's if they took the advice above.
But yes , these folks are not stupid...they know that to get their hands in the pie of the "middle-man-millions-of-pounds", they have to maintain a British (or whichever country they are in) "token" electronics company....to "oil the wheels" of the electronics import business.
You have to have that "token" electronics presence.....makes you look like you know about electronics, so that people will place orders through you for the cheap Chinese Electronics imports.
I never forget working in one "token" electronics company...they were paranoid about people seeing their token electronics schems, and then leaving......their highest power product, was a 150W led lamp which used sequence switched linear regulators....they considered this the holy grail of secrets in electronics....nobody who saw the schem could leave the company....they even tried potting over it to "cover it up"....but it was so ruddy simple, that you could literally reverse engineer it just by simply looking at the mains input current waveform to it...........the mains input current, was stair-step sine.....There were 5 steps including the top plateau, and the current sloped smoothly up from ledge to ledge......so it was ruddy obvious that it was 5 linear regs that handed over to each other as the mains rose and fell over 10ms.....it was ruddy obvious that an inverting opamp was used to make the proceeding stage led current rise act so as to reduce the current of the preceeding stage...and then the proceeding stage, when in regulation, had its opamp output down low....so that was obviously used to turn a PNP on, and disable the preceeding stage.....i mean, it was just so obvious...you could have posted that schem over the world and it would have made no difference....bog standard electronics !!!....all already spewed out over the web anyhow.
These guys are making a massive mistake by not cycling loads of engineers through their companys....minimising the engineer count (throughput) does no good!
Please help me to help the electronics company owners.
And as for people taking out NDA's for bog standard SMPS topologies???!!!...madness...wasting their own time and money!
Was given a 150W single stage PFC to reverse engineer once..no schem as it was "top secret"....turned out to be the bog standard PFC bias coil supply...just with the boost diode made synchronous, and then they obviously had to add software to equalise the volt-seconds on the primary.......again...bog standard....and BTW, it dropped out on no load to full load transients....and had over 3x the rated ripple in the electrolytic......."top secret"
.......yeah right.......that company was likely just flogging that "top secret" as part of a token business........they likely make their real dosh from Chinese imports........interestingly, the "top secret" SMPS was also using a little HV Buck (SOIC8) bias supply chip....which had markings which were non identifiable in the western world....likely from their Chinese partner.