Today's Message Index:
----------------------
1. 06:41 AM - test (Bob McCallum)
2. 06:50 AM - Re: test (BobsV35B@aol.com)
3. 05:12 PM - Capacitors for Whelen strobe power supply (Dennis Haverlah)
4. 06:47 PM - Good Deal on Power Guard (Speedy11@aol.com)
5. 07:40 PM - There is no 'ineptness' (Fergus Kyle)
6. 11:08 PM - Re: Capacitors for Whelen strobe power supply (James Foerster)
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 |
|
do not archive this test. (No list mail for two days)
Bob McC
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 |
|
In a message dated 3/25/2007 8:43:40 A.M. Central Daylight Time,
robert.mccallum2@sympatico.ca writes:
do not archive this test. (No list mail for two days)
Bob McC
Me Too!!
I think it is just slow due to 'Lectric Bob being out of town.
Do Not Archive.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
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: | Capacitors for Whelen strobe power supply |
A friend gave me his Whelen strobe power supply. It was still cycling
but not firing the strobes. Whelen will not repair it because they no
longer support this unit. I checked the capacitors and found one of the
two main capacitors has low resistance - partial short I believe. I'd
like to try to make it work again for use in my RV 7A.
The capacitors are 400UF - 300 VDC. They were manufactured by Sprague
and have the # D77072 on the aluminum case. Also the numbers 7821L
19-03 are also on the case. Does anyone have a source I can purchase 2
from? I have looked on the web but don't know which capacitor design
these are - aluminum, electroletic, etc.
Thanks much,
Dennis H.
Message 4
| 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: | Good Deal on Power Guard |
If anyone is interested, I have a 12V Composite Design Power Guard (see it at
_http://www.compositedesigninc.com/Power_Guard.htm_
(http://www.compositedesigninc.com/Power_Guard.htm) ) that I don't need and I'll sell it at 40% off
retail with free shipping. If you want photos send me a note off the list at
speedy11 at aol.com. It is new, unused and never installed.
It doesn't fit my needs but maybe someone on this list can use it.
Stan Sutterfield
Message 5
| 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: | There is no 'ineptness' |
.......only ineptitude.
Ferg Kyle
Message 6
| 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: Capacitors for Whelen strobe power supply |
Dennis,
Digikey catalog lists 12 different capacitors, 9 of which are in stock,
which would work for you if they fit mechanically. These are all 350v
at 390UF units. You can use anything rated 300 volts or better, and the
400UF is rather approximate, as the electrolytics are rated + and - 20%.
It seems that 390 UF is now commonly used. Prices run from the $5 to
$7 range. I will try to send you the results of the search on the
Digikey site privately. Below are 390UF at 350v units:
Diameter(mm) Length(mm)
P11920-ND 25 40
P11921-ND 30 30
P11790-ND 25 45
P11791-ND 30 30
There are others, but mainly the ratings differ for service life at
rated temperature. The first two are 3000 hr at 85 degrees C, the next
two are 2000 hr at 105 degrees C.
Search for these part numbers on the Digikey site, and they will lead
you to all the information.
Jim Foerster J400 wiring-veerry sloooly
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! --
|