Today's Message Index:
----------------------
1. 12:18 PM - 2019 List of Contributors (Matt Dralle)
2. 01:18 PM - Beech Explosion (Robert L. Nuckolls, III)
3. 01:32 PM - Re: B&C voltage regulator low voltage warning (ADDENDUM) (Robert L. Nuckolls, III)
4. 01:48 PM - Re: Beech Explosion (Ed Gilroy)
5. 02:39 PM - Re: B&C voltage regulator low voltage warning (ADDENDUM) (Robert L. Nuckolls, III)
Message 1
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| Subject: | 2019 List of Contributors |
Dear Listers,
The 2019 Matronics Email List and Forum Fund Raiser officially ended a couple of
weeks ago and it's time that I published this year's List of Contributors.
It is the people on this list that directly make these Email Lists and Forums
possible! Their generous Contributions keep the servers and Internet connection
up and running!
You can still show your support this year and pick up a great gift at the same
time. The Contribution Web Site is fast, easy, and secure:
http://www.matronics.com/contribution
Or, by dropping a personal check in the mail to:
Matt Dralle / Matronics
581 Jeannie Way
Livermore CA 94550
And finally, I'm proud to present The 2019 Fund Raiser List of Contributors:
http://www.matronics.com/loc
Thank you again to everyone that made a Contribution this year!!
Matt Dralle
Matronics Email List & Forum Administrator
Message 2
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Wichita Beechcraft (Textron East Campus) suffered
a massive explosion that's being attributed to
a malfunction in a liquid nitrogen system
https://tinyurl.com/roo35fk
My brother-in-law who lives blocks from the facility
tells me it really rattled his house and shook the
ground.
Pictures in the links above show a massive energy
release that disassembled one end of Beechcraft
Plant III and damaged the building just south
which I think used to be a finishing (interiors
and exterior paint) facility.
Thankfully, only a hand full of holiday crews
were on site at the time. 15 injured of which
11 were transported . . . one was 'serious'.
I've never heard of a 'nitrogen' explosion not
involving an extothermic reaction . . . but I
don't think there was any combustion associated
with the event.
Bob . . .
Message 3
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| Subject: | Re: B&C voltage regulator low voltage warning (ADDENDUM) |
>>Hi Deems... ref: http://aeroelectric.com/Pictures/Schematics/LR3_LV_Led_1.jpg
>>
>>
>>Deems Davis wrote:
>> > I would like to subsitute an LED for the Low Voltage bulb that came with
>> > the B&C LR3C-14 . I posed the question to Tim Hedding @ B&C and received
>> > this in response.
>> >
>> > If you use an LED instead of an incandescent lamp, install a 470
>> - 510 Ohm,
>> > 1/2 Watt, resistor between terminals 3 and 5 of the LR3C-14 (or
>> the SB1B-14)
>> > so that the LED does not glow dimly all of the time.
>
> Either of these techniques works . . . in fact,
> Tim's suggestion is probably the most elegant.
Now for the rest of the story . . .
Tim's simple resistor suggestion is valid only
if your proposed LED substitute has a resistor
already in series with it . . . many off-the-shelf
LED indicators are RATED at 12 volts and include
the necessary series resistor to properly power
the approx 3.5 volt LED.
If you're wanting to install a rudimentary
led in the as-supplied lamp fixture from
B&C, you'll need to add TWO resistors wired
as shown in the link above.
As a general rule, I recommend converting
your as-supplied fixture to LED using
the rudimentary lamp
Bright White LED 5mm (4 pack)
These are pretty easy to build into
the incandescent fixture . . . either
the as-supplied or one of your own
acquisition.
The advantage of a DIY indicator is that
you can select a high-intensity lamp
(10K+ MCD) for sunlight viewability.
If anyone needs a high-output lamp
for their project, drop me an address
and I'll fix you up. I have RED, AMBER,
WHITE, BLUE and GREEN high-intensity
lamps on hand.
Bob . . .
Message 4
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| Subject: | Re: Beech Explosion |
The news said something about a 4 inch gas main being breached by the
nitrogen release.
On Fri, Dec 27, 2019 at 4:23 PM Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> nuckolls.bob@aeroelectric.com>
>
>
> Wichita Beechcraft (Textron East Campus) suffered
> a massive explosion that's being attributed to
> a malfunction in a liquid nitrogen system
>
>
> https://tinyurl.com/roo35fk
>
> My brother-in-law who lives blocks from the facility
> tells me it really rattled his house and shook the
> ground.
>
> Pictures in the links above show a massive energy
> release that disassembled one end of Beechcraft
> Plant III and damaged the building just south
> which I think used to be a finishing (interiors
> and exterior paint) facility.
>
> Thankfully, only a hand full of holiday crews
> were on site at the time. 15 injured of which
> 11 were transported . . . one was 'serious'.
>
> I've never heard of a 'nitrogen' explosion not
> involving an extothermic reaction . . . but I
> don't think there was any combustion associated
> with the event.
>
>
> Bob . . .
>
>
Message 5
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| Subject: | Re: B&C voltage regulator low voltage warning (ADDENDUM) |
>>Hi Deems... ref: http://aeroelectric.com/Pictures/Schematics/LR3_LV_Led_1.jpg
>>
>>
>>Deems Davis wrote:
>> > I would like to subsitute an LED for the Low Voltage bulb that came with
>> > the B&C LR3C-14 . I posed the question to Tim Hedding @ B&C and received
>> > this in response.
>> >
>> > If you use an LED instead of an incandescent lamp, install a 470
>> - 510 Ohm,
>> > 1/2 Watt, resistor between terminals 3 and 5 of the LR3C-14 (or
>> the SB1B-14)
>> > so that the LED does not glow dimly all of the time.
>
> Either of these techniques works . . . in fact,
> Tim's suggestion is probably the most elegant.
Now for the rest of the story . . .
Tim's simple resistor suggestion is valid only
if your proposed LED substitute has a resistor
already in series with it . . . many off-the-shelf
LED indicators are RATED at 12 volts and include
the necessary series resistor to properly power
the approx 3.5 volt LED.
If you're wanting to install a rudimentary
led in the as-supplied lamp fixture from
B&C, you'll need to add TWO resistors wired
as shown in the link above.
As a general rule, I recommend converting
your as-supplied fixture to LED using
the rudimentary lamp
Bright White LED 5mm (4 pack)
These are pretty easy to build into
the incandescent fixture . . . either
the as-supplied or one of your own
acquisition.
The advantage of a DIY indicator is that
you can select a high-intensity lamp
(10K+ MCD) for sunlight viewability.
If anyone needs a high-output lamp
for their project, drop me an address
and I'll fix you up. I have RED, AMBER,
WHITE, BLUE and GREEN high-intensity
lamps on hand.
Bob . . .
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