Today's Message Index:
----------------------
1. 11:55 AM - Whelan capacitor substitute (Joe Dubner)
2. 03:59 PM - Re: Whelan capacitor substitute (Robert L. Nuckolls, III)
3. 07:54 PM - Re: Whelan capacitor substitute (Joe Dubner)
Message 1
INDEX | Back to Main INDEX |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Whelan capacitor substitute |
Does anyone have firsthand experience replacing the Whelan 51-3361401-42
capacitor assembly in a strobe power supply? Specifically, can you give me a
DigiKey, Mouser, Allied, etc. part number for a suitable photo flash capacitor
substitute based on firsthand experience?
The Whelan parts (and complete assemblies) are crazy-expensive. It's enough to
make me change out the entire system to LEDs :-( But I'd really rather just
repair the power supply and keep on flying.
Thanks,
Joe
Independence, OR
Message 2
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Whelan capacitor substitute |
At 01:54 PM 12/11/2013, you wrote:
>
>Does anyone have firsthand experience replacing the Whelan
>51-3361401-42 capacitor assembly in a strobe power
>supply? Specifically, can you give me a DigiKey, Mouser, Allied,
>etc. part number for a suitable photo flash capacitor substitute
>based on firsthand experience?
>
>The Whelan parts (and complete assemblies) are
>crazy-expensive. It's enough to make me change out the entire
>system to LEDs :-( But I'd really rather just repair the power
>supply and keep on flying.
Consider patching "non flash rated" capacitors
in. The worst that happens is that they don't
last as long as the original parts. But as long
as you can do the work yourself, the price differences
might make the shorter service life an attractive
alternative.
Can you read capacity and voltage values off
the parts?
Bob . . .
Message 3
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Whelan capacitor substitute |
Robert L. Nuckolls, III wrote, On 12/11/2013 15:58:
> <nuckolls.bob@aeroelectric.com>
>
> Consider patching "non flash rated" capacitors
> in. The worst that happens is that they don't
> last as long as the original parts. But as long
> as you can do the work yourself, the price differences
> might make the shorter service life an attractive
> alternative.
>
> Can you read capacity and voltage values off
> the parts?
There are no markings other than a "Whelen" brand name and part number. But a
web site selling replacement parts gave me a tip when it called them 400uF at
360WVDC. There are two of them in series and I measured 230VDC across each so
that 360 WVDC rating seems reasonable.
I "patched" in a couple of junkbox 470uF/450WVDC capacitors. Alas, the power
supply still does not work. Upon close examination I now see some charred
components and a swelled filter capacitor in the low voltage section. Rather
than make the huge effort to reverse engineer and fix it, I think I'll buy a new
Nova power supply for under $100 and move on.
Thanks for the idea, Bob. I'm attaching a picture of the HV capacitors if for
no other reason than to to satisfy peoples' curiosity.
Best,
Joe
Independence, OR
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|