Ilya, Thanks for sharing your information. My switchers wont even
power up with a 22,000uF electrolytic across the load (I'm not even
using low ESR type), I had to dial that back to 18,000uF...This is a
24V 6A supply! Unfortunately using better powersupplies is not an
option for my setup, and the idea of using resistors in series with
big caps just ruffles my feathers. I'm really hoping Brad's fixes work
for us.
--- In Ilya Goldberg <> wrote:
> The inrush current is limited by the ESR of the capacitors, so its
> far from a dead short. If the ESR is too low, that can be increased
> with resistors, but this has to always be less than the load unless
> you use a switch, and the whole point is KISS. I've never used
> additional resistors, and had no problems with the switchers I've used.
> Initially this will be well above their rated current, but good
> switchers should limit their output current by dropping the output
> voltage (rather than just shut-down).
> One of the ones I've used was an IDEC PS5R-SC12 (12V DC 2.5A,
> universal AC input).
>
> The one on-board the ts7260 (5 V) as well as the TS-12W had no
> problems with this either. It did take them a good long time to come
> up to voltage.
> Currently I'm working with a substantial 12 V battery (used run a a
> fairly large pump in a solar application), so its even less of a
> problem.
> -I
------------------------------------
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/ts-7000/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/ts-7000/join
(Yahoo! ID required)
<*> To change settings via email:
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|