I should mention that I run a 40 amp tripplite power supply non-rack version.
About a year ago it blew the PA and controller on my 64 repeater. For
some reason the crow bar refused to fire and short out the supply
The problem was electrolytic capacitors that were 16V in areas where
25 volts and alot of ripple are present. Tripplite is famous for not
giving out schematics, but what I can tell is these caps were
filtering the AC voltage from the transformers secondary tap for the
main PCB. You can also put a voltmeter on AC and touch the output
terminals and measure the "ripple" I think it was at 350mV for me
before exploding and about 15mV now.
I don't know what failed first but I had the capacitors explode and
spray electrolyte on everything in the case. I had to replace all the
active components on the PCB, the 4 pass transistors and the 2
capacitors on the PCB, used 35V parts this time.
Feel the face of the power supply, if it is about 130-140 degrees, you
may have a problem. I thought it was normal, but on repair the face is
running fairly cold.
On 4/28/05, skipp025 <[EMAIL PROTECTED]> wrote:
> Hi Ron,
>
> Tis a Linear Supply. We don't use switchers yet
> as none have a low enough hf noise level to meet
> our requirements. Though they are getting much
> better...
>
> cheers,
> skipp
>
> > Ron" <Emailremovedforspamcontrol> wrote:
> > Skipp,
> > Is this Triplite supply a Switcher or a traditional
> > Linear ?
> > Ron
>
>
> Yahoo! Groups Links
>
>
>
>
>
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