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PSU wanted
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Graham J
May 29, 2016, 11:40:24 AM5/29/16
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This is for a Port Designs Ergo Station II with 4 Port USB Hub, see:
https://www.amazon.co.uk/Port-Designs-Ergo-Station-Grey/dp/B000XWZZ4Q
The PSU has been lost.
I can't find any specification so I don't know the voltage, whether ac
or dc, pin polarity, etc. - nothing. If somebody has one of these and
can tell me what is written on the PSU I can improvise ...
TIA
--
Graham J
https://www.amazon.co.uk/Port-Designs-Ergo-Station-Grey/dp/B000XWZZ4Q
The PSU has been lost.
I can't find any specification so I don't know the voltage, whether ac
or dc, pin polarity, etc. - nothing. If somebody has one of these and
can tell me what is written on the PSU I can improvise ...
TIA
--
Graham J
Theo Markettos
May 29, 2016, 2:26:40 PM5/29/16
to
A simple check on polarity would be to check for continuity between the
inlet and the shell of a USB plug. My guess would be it's a barrel
connector with centre positive/shell negative. Probably 2.1mm or 2.5mm
barrel (they're annoyingly hard to tell apart).
Since it's 4 port, get one with at least 4A and that should be enough for
most USB devices.
Theo
Graham J
May 29, 2016, 5:41:28 PM5/29/16
to
diode so it probably wants about 9v dc and might tolerate polarity
reversal. There's also a transistor and a chip with about ten leads per
side. So a bit more reverse engineering and I will get there ...
--
Graham J
Dr J R Stockton
May 30, 2016, 6:48:48 PM5/30/16
to
In demon.tech.pc message <nifnm7$s21$1...@dont-email.me>, Sun, 29 May 2016
22:41:27, Graham J <gra...@invalid.com> posted:
>
>I took it apart. The pcb has what looks like a regulator chip and a
>big diode so it probably wants about 9v dc and might tolerate polarity
>reversal. There's also a transistor and a chip with about ten leads
>per side. So a bit more reverse engineering and I will get there ...
The "transistor" could be a three-pin voltage regulator. I suggest that
you give us (and Google-search) the part numbers of anything that looks
like a semiconductor, but perhaps not the "date" indicator (I cannot
recall what those looked like, and have not seen any with post-1999
notation).
--
(c) John Stockton, Surrey, UK. 拯merlyn.demon.co.uk Turnpike v6.05 MIME.
Merlyn Web Site < > - FAQish topics, acronyms, & links.
22:41:27, Graham J <gra...@invalid.com> posted:
>
>I took it apart. The pcb has what looks like a regulator chip and a
>big diode so it probably wants about 9v dc and might tolerate polarity
>reversal. There's also a transistor and a chip with about ten leads
>per side. So a bit more reverse engineering and I will get there ...
you give us (and Google-search) the part numbers of anything that looks
like a semiconductor, but perhaps not the "date" indicator (I cannot
recall what those looked like, and have not seen any with post-1999
notation).
--
(c) John Stockton, Surrey, UK. 拯merlyn.demon.co.uk Turnpike v6.05 MIME.
Merlyn Web Site < > - FAQish topics, acronyms, & links.
Graham J
Jun 1, 2016, 10:27:52 AM6/1/16
to
using that.
Thanks for all the help.
--
Graham J
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