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Post by SteveC on Sept 2, 2017 14:48:30 GMT
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Post by SteveC on Sept 2, 2017 15:43:08 GMT
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Post by SteveC on Sept 2, 2017 16:29:17 GMT
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Post by SteveC on Sept 2, 2017 16:30:33 GMT
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Post by SteveC on Sept 2, 2017 16:32:19 GMT
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Post by SteveC on Sept 2, 2017 16:34:30 GMT
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Post by MartinT on Sept 2, 2017 16:34:47 GMT
They always fascinated me, but I never really got to the bottom of their topology and how they work. Perhaps @colin could shed light? |
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Post by SteveC on Sept 2, 2017 16:37:17 GMT
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Post by ChrisB on Sept 2, 2017 16:45:47 GMT
Lots of juicy stuff there Steve. Not only that but you're giving Jerry a run for his money on the quantity of photos.
Excellent!!
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Post by SteveC on Sept 2, 2017 18:30:51 GMT
Lots of juicy stuff there Steve. Not only that but you're giving Jerry a run for his money on the quantity of photos. Excellent!! Just a few of the nice toys that have passed through my hands Chris! I can't compete with Jerry's glowing bottles though!  |
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Post by Deleted on Sept 2, 2017 18:33:35 GMT
I Do not think anyone wants t o see my £300.00 piece of crap. however i don't have to prove expensive is better!
However some of these photos are rubbish wrapped in ££££££, but its a hi-forumat the end of the day
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Post by jandl100 on Sept 2, 2017 19:23:33 GMT
Kinter MA-180. Still in use in my conservatory system and sounding perfectly decent. I think this might win the contest for the lowest price bought new -- less than £10 delivered!  |
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Post by jandl100 on Sept 2, 2017 19:25:22 GMT
Sony TA-1150. Classic 70s looks and sounded astonishingly good.  |
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Post by jandl100 on Sept 2, 2017 19:30:02 GMT
Nobsound NS-02G Chinese build of the classic JLH circuit - 10wpc class A transistor amp. It sounds excellent - I must plumb it back in sometime and see how it compares with the mighty Pass X150.  |
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Post by tim1750 on Sept 2, 2017 20:17:24 GMT
They always fascinated me, but I never really got to the bottom of their topology and how they work. Perhaps @colin could shed light? Bob Carver built a sunfire 5 or 7 channel that produced pretty good audio for an A/V amp have you heard one Martin ?. |
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Post by MartinT on Sept 2, 2017 20:25:36 GMT
No, never. Seen the photos.
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Post by Deleted on Sept 3, 2017 10:23:36 GMT
They always fascinated me, but I never really got to the bottom of their topology and how they work. Perhaps @colin could shed light? From memory Bob changed the primary voltage and thus the secondary voltage of the PSU inside the amp to increase power dynamically . Not a bad idea but I can see a few problems with this method due to charge time and then signal to power demand timing. Now day I have tried linear to Hi-Speed Buck converter not to dissimilar to a CUK converter running at 1MHz , it works but the filtering is a pain, so I used very expensive ITW Paktron Low ESR capacitors to do the job. Future Components
DATA Patron |
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Post by MartinT on Sept 3, 2017 10:30:42 GMT
Thanks, Colin.
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Post by Deleted on Sept 3, 2017 10:58:44 GMT
How CUK converter should work. CUK on Youtube
The SECA design I use was based on a dynamic load I designed to test MIL SPEC CUK's in Portsmouth circa 1974, at the time the patent on CUK's could only be used for military PSU designs. |
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Post by Deleted on Sept 3, 2017 22:36:41 GMT
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[/url]fullsizeoutput_901 by Steve Coward, on Flickr
