Today's Message Index:
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1. 05:56 AM - Re: lite blub (Rob Rowe)
2. 08:45 AM - Re: lite blub (glipaz)
3. 09:32 AM - Re: lite blub (Rob Rowe)
4. 10:36 AM - Re: Re: lite blub (Hans Oortman)
5. 10:41 AM - Help Keep Airport Courtesy Cars Running (gbrasch)
6. 01:12 PM - Re: Re: lite blub (Walter Lannon)
7. 03:27 PM - Re: lite blub (glipaz)
Message 1
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Hi Chris,
You may want to check that any LEDs you use are AC/DC capable, as ordinary LEDs
are intolerant of all but the smallest of negative voltages.
The AC capability adds a parallel ordinary diode, placed in opposition, that helps
protect the LED from the nasty transient spikes (usually negative) found on
YAK power rails arising from all the unsuppressed relays & solenoids used in
the aircraft.
Now while your battery, if it's in good condition, also helps absorb these transients
it should not be relied on to be your only source of protection.
I started using some ordinary LEDs in my -52 10 years ago and they progressively
died over the next couple of years, the AC capable replacements are still going
strong.
BTW - suggest you source matching colour LEDs if possible, the white ones tend
to wash out the plastic dome colours.
YMMV
Brgds, Rob
Looigi wrote:
> Hi Guys,
>
> Being that I am an Engineer and therefore always looking to fix a problem whilst
still retaining the biggest amount of cash, I have found these...
>
> https://www.aliexpress.com/item/Free-shipping-50pcs-lot-24V-BA9S-LED-T8-5-auto-led-light-bulbs-24V-bayonet-lights/32810924946.html?spm=2114.search0104.3.95.84nM2n&ws_ab_test=searchweb0_0,searchweb201602_3_10152_10065_10151_10344_10068_10345_10342_10547_10343_10340_10341_10548_10541_10084_10083_10307_5670020_5650020_10175_10060_10155_10154_10056_10055_10539_10537_10312_10536_10059_10313_10314_10534_10533_100031_5660020_10550_10103_10073_10551_10102_10552_10553_10554_10557_10142_10107-10102,searchweb201603_25,ppcSwitch_5&btsid=4fbc7dae-1a8c-4b0b-a4c2-064cb5c7e969&algo_expid=58009553-c625-4bd5-a0e6-fd7273f29680-12&algo_pvid=58009553-c625-4bd5-a0e6-fd7273f29680
>
> 50 of them for $12.00 including shipping (to NZ anyway). I haven't got any yet,
but these will be the ones I will use when the inevitable starts to happen.
>
> Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=474273#474273
Message 2
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Gents:
Are these the same bulbs for both Yak and CJ?!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=474278#474278
Message 3
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The Yak gear lamps are BA7S (bayonet, 7mm, short).
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=474279#474279
Message 4
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I don't think they will last long: BA7S is 12volts????
Hans O.
Op 04-11-17 17:32, Rob Rowe <yak-list@robrowe.plus.com> schreef:
>
> The Yak gear lamps are BA7S (bayonet, 7mm, short).
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=474279#474279
>
>
>
>
>
>
>
>
>
Message 5
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| Subject: | Help Keep Airport Courtesy Cars Running |
Last November, a few people (out of thousands) complained to me that my fundraising
efforts for the Airport Courtesy Cars site were too often. In response,
I will only ask for donations once a year, in November.
In the past few months I have transferred all the data to a web based platform.
As a result, the site will work on ANY device with no bugs, crashes, or Android
and Apple permissions required. Please refer to website for more details.
The site now lists over 1,830 courtesy cars across the U.S. I receive a very small
percent of my operating costs from advertisers. Most of my expenses are covered
from small donations from pilots like you. I take no salary.
Please consider any donation to keep the site up and running in the coming year.
Donations can be made via the secure PayPal tab on the site (you don not need
a PayPal account), or by mailing your donation to: Airport Courtesy Cars.
P.O. Box 85762, Tucson, Arizona 85754. All donors will be listed on the donor
page (unless you request not to be). Any donation is greatly appreciated.
Please share this post with a fellow pilot who might benefit from A.C.C.s
You can continue to email me your updates and suggestions to: airportcars101@gmail.com Thank you, Glenn www.airportcourtesycars.com
--------
Glenn Brasch
RV-9A Flying
Medevac Helicopter Pilot (Ret)
Owner, "Airport Courtesy Cars" Website www.airportcourtesycars.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=474322#474322
Message 6
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Yes and no:
Company: Superbrite, different size, operationally the same.
Panel lights for CJ6: B9As; (9mm) Yak 52 (etc?) B7As (7mm)
Work fine at 28VDC. All ind. lamps in my CJ are B9As for about 6 years.
No replacements yet.
Walt
-----Original Message-----
From: glipaz
Sent: Saturday, November 04, 2017 8:44 AM
Subject: Yak-List: Re: lite blub
Gents:
Are these the same bulbs for both Yak and CJ?!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=474278#474278
---
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Message 7
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Walt, what about for CJ landing light?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=474334#474334
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