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pmather
Joined: 17 Sep 2009
Posts: 33
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 Posted: Wed Sep 23, 2009 12:53 am Post subject: 5V from aircraft power - best practice? |
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pmather
Joined: 17 Sep 2009
Posts: 33
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| Posted: Wed Sep 23, 2009 1:12 am Post subject: Re: 5V from aircraft power - best practice? |
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Can anyone tell me why my message sent from outlook are coming through blank? This one sent viam the web forum.
Any message was:
Hi all
I'm building some PIC based circuits to provide some monitoring on my
aircraft including interfacing a HMC6343 compass module (very expensive!)
and wanted views on the best practice way to derive a clean 5V and 3.3V
supply from the aircraft power.
My current approach is as follows:
1 amp fuse - reverse polarity protection diodes - transorb and 4700uF
capacitor across power/GND inside the diodes. Isolating DC-DC convertor (e.g
TRACO TEL 3-2011) which gives 5V out from 10-30V in - MCP1700 low dropout
linear regulator to get 3.3V from the 5V rail (very low power required at
3.3V).
This is very much a one off so I'm not too worried about cost (especially
compared to the compass module) but want something simple, secure, and
reliable.
Thanks
Peter
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david.nelson(at)pobox.com
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| Posted: Wed Sep 23, 2009 5:54 am Post subject: 5V from aircraft power - best practice? |
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Hi Peter,
There was some recent discussion on this list regarding the 'blank emails'
topic. I think the common problem was that AVG anti-virus was used. If you
google for 'AVG anti-virus blank emails' you'll find various threads. Here are a
couple of threads that may help you:
http://www.zimbra.com/forums/zimbra-connector-outlook/7386-blank-email-body-anti-virus.html
http://techrepublic.com.com/5208-23-0.html?forumID=101&threadID 72602&messageID 581442
Regards,
/\/elson
On Wed, 23 Sep 2009, pmather wrote:
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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lists(at)stevet.net
Guest
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| Posted: Wed Sep 23, 2009 5:54 am Post subject: 5V from aircraft power - best practice? |
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You need to select "Plain Text" as your default for sending messages.
The mail you sent has some bad HTML code and it shows up as blank
unless you select "Raw Source" (if your email program allows that.)
Steve Thomas
________________________________________________________________________
On Sep 23, 2009, at 2:12 AM, pmather wrote:
| Quote: |
Can anyone tell me why my message sent from outlook are coming
through blank? This one sent viam the web forum.
Any message was:
Hi all
I'm building some PIC based circuits to provide some monitoring on my
aircraft including interfacing a HMC6343 compass module (very
expensive!)
and wanted views on the best practice way to derive a clean 5V and
3.3V
supply from the aircraft power.
My current approach is as follows:
1 amp fuse - reverse polarity protection diodes - transorb and 4700uF
capacitor across power/GND inside the diodes. Isolating DC-DC
convertor (e.g
TRACO TEL 3-2011) which gives 5V out from 10-30V in - MCP1700 low
dropout
linear regulator to get 3.3V from the 5V rail (very low power
required at
3.3V).
This is very much a one off so I'm not too worried about cost
(especially
compared to the compass module) but want something simple, secure, and
reliable.
Thanks
Peter
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 64465#264465
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pmather
Joined: 17 Sep 2009
Posts: 33
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| Posted: Wed Sep 23, 2009 6:37 am Post subject: Re: 5V from aircraft power - best practice? |
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Steve, David
Thanks for the info on the emails. I was already using plain text so it is clearly AVG that causes the problems.
However, back to the real subject of the email?
Best regards
Peter
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