Today's Message Index:
----------------------
1. 08:23 AM - Re: capacitor durability (Ken Ryan)
2. 10:05 AM - Re: capacitor durability (Robert L. Nuckolls, III)
3. 10:13 AM - Re: capacitor durability (Ken Ryan)
4. 11:30 AM - Re: Need a device to send 12volts when all 3 green lights are light (Robert L. Nuckolls, III)
5. 11:42 AM - Re: Need a device to send 12volts when all 3 green lights are light (Charlie England)
6. 01:33 PM - Re: Need a device to send 12volts when all 3 green lights are light (Robert L. Nuckolls, III)
7. 01:41 PM - Re: capacitor durability (Bill Maxwell)
8. 02:30 PM - Re: capacitor durability (Ken Ryan)
Message 1
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| Subject: | Re: capacitor durability |
The terminals are fine. How would one know that a capacitor was not working
properly in a (for example) Rotax installation? I know some guys don't even
use the capacitor.
On Thu, Jan 11, 2018 at 1:18 PM, Bill Maxwell <wrmaxwell@bigpond.com> wrote:
> Extremely unlikely to be damaged Ken, provided of course tthat the
> terminals weren't broken off.
>
> Bill
>
> On 12/01/2018 7:38 AM, Ken Ryan wrote:
>
> So yesterday I received my shiny new 33000 micro farad capacitor, for use
> with my Silent Hektik regulator. Within five minutes, I had managed to drop
> it from a height of three feet onto my hardwood floor. The floor is fine,
> but I wonder about the capacitor. How likely is it that it was damaged? How
> would such damage show up?
>
> Ken
>
>
Message 2
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| Subject: | Re: capacitor durability |
At 02:38 PM 1/11/2018, you wrote:
>So yesterday I received my shiny new 33000 micro farad capacitor,
>for use with my Silent Hektik regulator. Within five minutes, I had
>managed to drop it from a height of three feet onto my hardwood
>floor. The floor is fine, but I wonder about the capacitor. How
>likely is it that it was damaged? How would such damage show up?
If the case is not dented, the cap is probably
just fine. Even if it IS dented, risk to functionality
is low. Failure would show up as excessive leakage
precipitating a venting event. Generally nothing spectacular.
Bob . . .
Message 3
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| Subject: | Re: capacitor durability |
Thanks. I will pretend nothing happened.
On Jan 12, 2018 09:09, "Robert L. Nuckolls, III" <
nuckolls.bob@aeroelectric.com> wrote:
> At 02:38 PM 1/11/2018, you wrote:
>
> So yesterday I received my shiny new 33000 micro farad capacitor, for use
> with my Silent Hektik regulator. Within five minutes, I had managed to drop
> it from a height of three feet onto my hardwood floor. The floor is fine,
> but I wonder about the capacitor. How likely is it that it was damaged? How
> would such damage show up?
>
>
> If the case is not dented, the cap is probably
> just fine. Even if it IS dented, risk to functionality
> is low. Failure would show up as excessive leakage
> precipitating a venting event. Generally nothing spectacular.
>
> Bob . . .
>
Message 4
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| Subject: | Need a device to send 12volts when all 3 green |
lights are light
At 05:03 PM 1/11/2018, you wrote:
>Then I would lose each gear indication. This is for an audio alert
>device input if the gear is not down and locked (all 3)
>
>From: owner-aeroelectric-list-server@matronics.com
>[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
>Robert L. Nuckolls, III
>Sent: Thursday, January 11, 2018 3:04 PM
>To: aeroelectric-list@matronics.com
>Subject: Re: AeroElectric-List: Need a device to send 12volts when
>all 3 green lights are light
Okay, how about something like this:
Emacs!
Bob . . .
Message 5
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| Subject: | Re: Need a device to send 12volts when all 3 green |
lights are light
On 1/12/2018 1:30 PM, Robert L. Nuckolls, III wrote:
> At 05:03 PM 1/11/2018, you wrote:
>> Then I would lose each gear indication. This is for an audio alert
>> device input if the gear is not down and locked (all 3)
>>
>> *From:* owner-aeroelectric-list-server@matronics.com
>> [mailto:owner-aeroelectric-list-server@matronics.com
>> <mailto:owner-aeroelectric-list-server@matronics.com>] *On Behalf Of
>> *Robert L. Nuckolls, III
>> *Sent:* Thursday, January 11, 2018 3:04 PM
>> *To:* aeroelectric-list@matronics.com
>> *Subject:* Re: AeroElectric-List: Need a device to send 12volts when
>> all 3 green lights are light
>
> Okay, how about something like this:
>
> Emacs!
>
>
> Bob . . .
>
What's wrong with using a CMOS 3 input AND gate (linked in an earlier
email)?
Here's one that works on 12V, & you get 2 spare devices in the package:
http://www.ti.com/lit/ds/symlink/cd4082b.pdf
---
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Message 6
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| Subject: | Re: Need a device to send 12volts when all 3 green |
lights are light
>> Bob . . .
>What's wrong with using a CMOS 3 input AND gate (linked in an earlier email)?
>
>Here's one that works on 12V, & you get 2 spare devices in the package:
><http://www.ti.com/lit/ds/symlink/cd4082b.pdf>http://www.ti.com/lit/ds/symlink/cd4082b.pdf
Not a thing . . . just one of several alternatives.
Bob . . .
Message 7
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| Subject: | Re: capacitor durability |
It can be tested both for its capacitance and for ESR, for both which
you would need the appropriate instrument. Hardly worth investing in
these if your only use is on this application. If you know a friendly
amateur radio operator, he or she should be able to do that for you, or
know of somebody who has the test instruments.
A simple test would be to put it across a battery and let it charge up,
then remove it and measure the voltage stored in the capacitor. Should
be close to the battery's voltage. Mind you don't touch both terminals
though, as it is capable of dumping its charge quickly into your body, a
trick I recall being often employed in high school physics classes.
A capacitor is a relatively simple device. In this application, it sits
across the DC supply from the alternator and regulator, where it smooths
out any remaining AC spikes that might otherwise show up as noise in
your radio or otherwise interfere with the proper operation of your
avionics.
On 13/01/2018 3:22 AM, Ken Ryan wrote:
> The terminals are fine. How would one know that a capacitor was not
> working properly in a (for example) Rotax installation? I know some
> guys don't even use the capacitor.
>
> On Thu, Jan 11, 2018 at 1:18 PM, Bill Maxwell <wrmaxwell@bigpond.com
> <mailto:wrmaxwell@bigpond.com>> wrote:
>
> Extremely unlikely to be damaged Ken, provided of course tthat the
> terminals weren't broken off.
>
> Bill
>
>
> On 12/01/2018 7:38 AM, Ken Ryan wrote:
>> So yesterday I received my shiny new 33000 micro farad capacitor,
>> for use with my Silent Hektik regulator. Within five minutes, I
>> had managed to drop it from a height of three feet onto my
>> hardwood floor. The floor is fine, but I wonder about the
>> capacitor. How likely is it that it was damaged? How would such
>> damage show up?
>>
>> Ken
>
>
Message 8
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| Subject: | Re: capacitor durability |
Thx Bill!
Sent from my Android. Sorry Steve.
On Jan 12, 2018 12:45, "Bill Maxwell" <wrmaxwell@bigpond.com> wrote:
> It can be tested both for its capacitance and for ESR, for both which you
> would need the appropriate instrument. Hardly worth investing in these if
> your only use is on this application. If you know a friendly amateur radio
> operator, he or she should be able to do that for you, or know of somebody
> who has the test instruments.
>
> A simple test would be to put it across a battery and let it charge up,
> then remove it and measure the voltage stored in the capacitor. Should be
> close to the battery's voltage. Mind you don't touch both terminals though,
> as it is capable of dumping its charge quickly into your body, a trick I
> recall being often employed in high school physics classes.
>
> A capacitor is a relatively simple device. In this application, it sits
> across the DC supply from the alternator and regulator, where it smooths
> out any remaining AC spikes that might otherwise show up as noise in your
> radio or otherwise interfere with the proper operation of your avionics.
>
> On 13/01/2018 3:22 AM, Ken Ryan wrote:
>
> The terminals are fine. How would one know that a capacitor was not
> working properly in a (for example) Rotax installation? I know some guys
> don't even use the capacitor.
>
> On Thu, Jan 11, 2018 at 1:18 PM, Bill Maxwell <wrmaxwell@bigpond.com>
> wrote:
>
>> Extremely unlikely to be damaged Ken, provided of course tthat the
>> terminals weren't broken off.
>>
>> Bill
>>
>> On 12/01/2018 7:38 AM, Ken Ryan wrote:
>>
>> So yesterday I received my shiny new 33000 micro farad capacitor, for use
>> with my Silent Hektik regulator. Within five minutes, I had managed to drop
>> it from a height of three feet onto my hardwood floor. The floor is fine,
>> but I wonder about the capacitor. How likely is it that it was damaged? How
>> would such damage show up?
>>
>> Ken
>>
>>
>>
>
>
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