On 10 Aug 2015 17:43:24 GMT, joe hey Gave us:
Yeah and you almost have an inkling of human intelligence.
Then you go off all palsy wowsy with the group retard. The pommy bitch is a troll, dumbshit.
You are a complete and utter imbecile.
Sheesh...
You're AlwayWrong as usual. I've repaired plenty of HP/Agilent generators that have switchers in them. Why don't you download a service manual for an HP 8563E/EC and see for yourself?
SMPS have improved greatly during the years. In the old days SMPS was a no-no in high quality audio applications or for powering amateur radio HF-transceivers.
These days dithering the switching frequency or manually adjusting the switching frequency will either blend the spurs into background noise or at least move spurs out of desired reception frequency range.
However, based on the original question, the OP might be able with some help to construct a quiet linear (50/60 Hz) PS, but absolutely not a quiet SMPS.
On Tue, 11 Aug 2015 06:49:55 -0400, JW Gave us:
Oh boy! JW is a repair tech!
On Tue, 11 Aug 2015 15:07:55 +0300, snipped-for-privacy@downunder.com Gave us:
We are using envelope tracking and DPD. A good old fashioned EMI filter properly designed and placed at various locations in a design also serves well.
Of course he was. He was looking for a description of you:
Some opamps have terrible high-frequency PSRR. Some have negative PSRR in some configurations, namely gain from a supply rail to the output.
-- John Larkin Highland Technology, Inc lunatic fringe electronics jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Yup. Negative PSR is often putrid on 'single supply' op amps, for instance. Others are pretty good, e.g. the LME49990 (100 dB @ 20 kHz).
It's nice to be able to use the analogue supply rail for biasing, especially with a single supply, which is another argument for *ahem* advanced filtering. ;)
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Oops. That's a SA, but the same holds true for generators as well. Got my 856X mixed up with 866X.
Yup. I fix the T & M equipment (that incompetent pinheads like you blow up on a daily basis) for several large-ish used equipment dealers. Pay is excellent, and very little paperwork which I loathe. Best of all, I do it at home.
Anyway...
Care to address this particular piece of idiocy, or would you like to admit you were wrong, AW?
On Tue, 11 Aug 2015 08:42:03 -0500 John S wrote in Message id: :
Heh.
:)
Well, be that as it may, several designers here have been able to interpret the original, simple question without difficulty and have provided precisely the pointers I was looking for - and I'm most grateful to them. It's a shame some other folks have a basic English comprehension problem; perhaps it's not their first language, but that's life I guess. :-/
Yeah, and YOU obviously don't know how to read AT ALL.
On Tue, 11 Aug 2015 14:47:45 -0400, JW Gave us:
Just bought a 40GHz generator last week. Guess what type of supply it has.
Oh, that's right... you are too stupid to work with anything in that frequency range.
Just WTF do you think 'high end' means, chump?
-- In a linear supply, since the ripple will be squashed to nice, clean DC by the regulator following the reservoir cap(s), the type of capacitor doesn't matter as much as its value, since that'll determine the headroom available for the regulator to work under. John Fields
On Tue, 11 Aug 2015 21:24:20 +0000 (UTC), Cursitor Doom Gave us:
shrug... you're an idiot. Good job, shrug boy.
On Tue, 11 Aug 2015 16:56:30 -0500, John Fields Gave us:
Yes. One must match the stored energy with the expected loading.
With HV supplies this is especially true. The multiplier caps scale up with the load demands as does the final storage bank.
I don't guess. Why don't you tell me what the model number is? I'll be happy to admit I was wrong, unlike you.
*yawn*On Thu, 13 Aug 2015 08:44:20 -0400, JW Gave us:
Says the utter idiot who refers to someone as "AW".
Seems it fits you more so than anyone in your pathetic dreams.
Wiltron 6669A-40 A $50k 40GHz sweep generator way outside your realm.
You lose... again.
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.