Today's Message Index:
----------------------
1. 07:20 AM - Re: E-bus diode (user9253)
2. 07:56 AM - Re: E-bus diode (Robert L. Nuckolls, III)
3. 08:04 AM - Re: E-bus diode (Robert L. Nuckolls, III)
4. 08:45 AM - Re: Re: Source for Relay DPDT (On) Off (On ? -- VPX to Lancair Flap Motor Integration (Robert L. Nuckolls, III)
5. 08:53 AM - Re: E-bus diode (Jeff Luckey)
6. 08:55 AM - Re: E-bus diode (Jeff Page)
7. 09:48 AM - Re: E-bus diode (user9253)
8. 11:26 AM - Re: Re: Source for Relay DPDT (On) Off (On ? -- VPX to Lancair Flap Motor Integration (Valin & Allyson Thorn)
9. 01:51 PM - Re: E-bus diode (Eric M. Jones)
10. 02:58 PM - Re: Re: Source for Relay DPDT (On) Off (On ? -- VPX to Lancair Flap Motor Integration (Robert L. Nuckolls, III)
11. 08:41 PM - Re: E-bus diode (Thomas Blejwas)
Message 1
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This posting on VansAirforce by Mike Bullock
http://www.vansairforce.com/community/showpost.php?p=838578&postcount=2
led to this Schottky diode that costs $18
http://www.mouser.com/ProductDetail/IXYS/DSS2x61-0045A/?qs=%2fha2pyFadujmk%2fL9W%2fwlAGfqAiDlU%252bQn5Rt4HdD41QuAEJC6k4uxOg%3d%3d
It has two diodes inside of one package.
I believe the Mouser Mounting Style listed as SMD/SMT is incorrect.
Digikey lists it as Chassis Mount.
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=416376#416376
Message 2
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At 06:33 PM 12/29/2013, you wrote:
>
>Would this Schottky Diode be suitable for E-bus Feed?
>http://www.mouser.com/ProductDetail/IXYS/DSA300I200NA/?qs=sGAEpiMZZMtQ8nqTKtFS%2fAkrg%2fe%2fM1X2RJuduJKKNsI%3d
>It appears to be very robust with easy mounting.
>Joe
>
>--------
>Joe Gores
>
>
Yes, but you may want to seek anohter source.
Mouser seems to want to sell these in lots
of 10 minimum.
Bob . . .
Message 3
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At 08:04 PM 12/29/2013, you wrote:
><mrspudandcompany@verizon.net>
>
>>Would this Schottky Diode be suitable for E-bus Feed?
>>http://www.mouser.com/ProductDetail/IXYS/DSA300I200NA/?qs=sGAEpiMZZMtQ8nqTKtFS%2fAkrg%2fe%2fM1X2RJuduJKKNsI%3d
>>It appears to be very robust with easy mounting.
>
>
>The spec sheet says the forward voltage drop is 0.98V. Do you think
>that is acceptable?
That's a worst case condition which is almost never
realized in the manner in which we use them. Furhter,
as explained in other narratives concerning drops
in the e-bus normal feed diodes, there's no chance
that a diode offers an 'unacceptable' voltage drop.
The normally expected drops in all forms of diode
will produce an alternator-operating e-bus voltage
no less than 13v and probably HIGHER. While operating
the e-bus battery-only, available voltage will be 12.5
volts or LOWER . . . and we expect things to work
just fine at that level too.
Don't get wrapped about the "oh-my-gosh-there's-
a-voltage-drop" axle. It the grand scheme of
things its immaterial. This is why we've offered
and recommended the plain-vanilla, bridge rectifier
with fast-on tabs for nearly 20 years . . . cheap,
easy to mount and you can get the things at
Radio Shack.
Bob . . .
Message 4
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Subject: | Re: Source for Relay DPDT (On) Off (On ? -- |
VPX to Lancair Flap Motor Integration
At 06:00 PM 12/29/2013, you wrote:
>Thanks Bob McC, you have an excellent
>memory.=C2 I=99ve corrected those labels now.=C2
>
>I=99ve worked up a drawing with yours and the
>other=99s suggestion to just use two relays to
>interface between the VPX and Lancair flap motor
>circuitry.=C2 I=99ve attached the drawing.=C2 If
>anyone sees any problems or can suggest how to
>make it simpler please let me know.
>
>I expect Marc at VPX will be concerned the VPX
>will use the position senor to stop the flaps
>and if a limit switch stops it first the VPX
>will see it as a fault.=C2 So for it to work this
>way the VPX stop settings using the position
>sensor (not as accurate) will have to be in sync
>with the limit switches.=C2 And the position
>sensor may not be accurate enough to sync with the limit switches.
>
>A big thanks for everyone=99s help!
>
>Valin
I think you're making this much more complicated
than it needs to be. See:
http://tinyurl.com/lel2jep
You don't want to ground the flap motor power
on the instrument panel ground bus . . . that
goes to the firewall ground.
As you've noted, pins 5 & 6 need to be identified
for which one is +extend and +retract.
You want to disable the VP-X limit switch functions
or nullify them by programming them outside the
points where the limit switches operate.
Bob . . .
Message 5
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I recently purchased just a few from Mouser...=0A=0A=0A=0A=0A______________
__________________=0A From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroele
ctric.com>=0ATo: aeroelectric-list@matronics.com =0ASent: Monday, December
30, 2013 7:55 AM=0ASubject: Re: AeroElectric-List: E-bus diode=0A =0A=0A-->
AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.b
ob@aeroelectric.com>=0A=0AAt 06:33 PM 12/29/2013, you wrote:=0A>--> AeroEle
ctric-List message posted by: "user9253" <fransew@gmail.com>=0A>=0A>Would t
his Schottky Diode be suitable for E-bus Feed?=0A>http://www.mouser.com/Pro
ductDetail/IXYS/DSA300I200NA/?qs=sGAEpiMZZMtQ8nqTKtFS%2fAkrg%2fe%2fM1X2RJ
uduJKKNsI%3d=0A>It appears to be very robust with easy mounting.=0A>Joe=0A>
=0A>--------=0A>Joe Gores=0A>=0A>=0A=0A- Yes, but you may want to seek a
nohter source.=0A- Mouser seems to want to sell these in lots=0A- of
=- - - - - - - - - - - - - - - -Matt Dralle
===
Message 6
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Joe,
How about the IXYS DSS 2x81-0045A ? It is in the same SOT-227B package.
It is a lower current device, but still capable of much larger
currents than those likely seen on the E-Bus. According to the graph,
it has a typical forward drop of 0.34V at 10A.
Even better - you can buy 1 instead of minimum quantity 10 and they
are 25% cheaper :-)
Jeff Page
Dream Aircraft Tundra #10
http://ca.mouser.com/ProductDetail/IXYS/DSS2x61-0045A/?qs=%2fha2pyFaduhdMr45WqeM8mDZl76obrBu5hnr8BNQ46k%3d
> Would this Schottky Diode be suitable for E-bus Feed?
> http://www.mouser.com/ProductDetail/IXYS/DSA300I200NA/?qs=sGAEpiMZZMtQ8nqTKtFS%2fAkrg%2fe%2fM1X2RJuduJKKNsI%3d
> It appears to be very robust with easy mounting.
> Joe
>
> --------
> Joe Gores
Message 7
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Jeff, did you mean DSS2x61-0045A? It has the characteristics that you mentioned.
I could not find DSS 2x81-0045A.
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=416389#416389
Message 8
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Subject: | Re: Source for Relay DPDT (On) Off (On ? -- |
VPX to Lancair Flap Motor Integration
Thanks Bob =93 that=99s much simpler and elegant. As I
looked at your design I just kept saying =9CBob=99s a
genius=9D :) I think I was stuck on preserving the
Lancair circuitry instead of just solving the problem.
Thank you very much!
Valin
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Robert L. Nuckolls, III
Sent: Monday, December 30, 2013 9:45 AM
Subject: RE: AeroElectric-List: Re: Source for Relay DPDT (On) Off (On ?
-- VPX to Lancair Flap Motor Integration
At 06:00 PM 12/29/2013, you wrote:
Thanks Bob McC, you have an excellent memory.=C3=82
I=C3=A2=82=AC=84=A2ve corrected those labels now.=C3=82
I=C3=A2=82=AC=84=A2ve worked up a drawing with yours and the
other=C3=A2=82=AC=84=A2s suggestion to just use two relays to
interface between the VPX and Lancair flap motor circuitry.=C3=82
I=C3=A2=82=AC=84=A2ve attached the drawing.=C3=82 If anyone sees
any problems or can suggest how to make it simpler please let me know.
I expect Marc at VPX will be concerned the VPX will use the position
senor to stop the flaps and if a limit switch stops it first the VPX
will see it as a fault.=C3=82 So for it to work this way the VPX stop
settings using the position sensor (not as accurate) will have to be in
sync with the limit switches.=C3=82 And the position sensor may not be
accurate enough to sync with the limit switches.
A big thanks for everyone=C3=A2=82=AC=84=A2s help!
Valin
I think you're making this much more complicated
than it needs to be. See:
http://tinyurl.com/lel2jep
You don't want to ground the flap motor power
on the instrument panel ground bus . . . that
goes to the firewall ground.
As you've noted, pins 5 & 6 need to be identified
for which one is +extend and +retract.
You want to disable the VP-X limit switch functions
or nullify them by programming them outside the
points where the limit switches operate.
Bob . . .
<http://www.aeroelectric.com>
<http://www.buildersbooks.com>
<http://www.homebuilthelp.com>
<http://www.mypilotstore.com>
Message 9
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For several years I have sold: IXYS DSSX61-0045A with a heatsinks, mounting hardware,
shipping and manual. It's a good choice.
Eric M. Jones
PerihelionDesign.com
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=416393#416393
Message 10
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Subject: | Re: Source for Relay DPDT (On) Off (On ? -- |
VPX to Lancair Flap Motor Integration
At 01:25 PM 12/30/2013, you wrote:
>Thanks Bob ' that=99s much simpler and
>ellegant.=C2 As I looked at your design I just
>kept saying =9CBob=99s a genius=85=9D=C2 J=C2 =C2 I
>think I was stuck on preserving the Lancair
>circuitry instead of just solving the problem.=C2
>
>Thank you very much!
>
>Valin
My pleasure. I'll explore the details with Marc
but at the present, I'm 99.8% certain that we're
golden.
Bob . . .
Message 11
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-Of course a higher voltage drop leads to a higher heat generated and,-
hence, for many of us, the attraction of the Schottky diodes.- I've been
searching for single diodes to use in a modified version of -Bob's new Z-
07.- I'll have 12-15 amps-of current through one diode.-I'm wondering
about a diode in the ITO-220 case, like =0Ahttp://www.digikey.com/product-
detail/en/VFT4045BP-M3%2F4W/VFT4045BP-M3%2F4W-ND/3102977=0A=0AWith a forwar
d of current of around 0.5V, the power to be thermally accommodated is less
than 8W. and many heat sinks are available for the-TO-220 configuration.
- The connections on the TO-220-must be soldered, but I'm less concerne
d about soldered connections after reading Bob's recent article in Kitplane
.- =0A=0AAre there other reasons for rejecting a diode like this?=0A=0ATo
m=0A=0A=0A=0A=0A>________________________________=0A> From: "Robert L. Nuck
olls, III" <nuckolls.bob@aeroelectric.com>=0A>To: aeroelectric-list@matroni
cs.com =0A>Sent: Monday, December 30, 2013 9:01 AM=0A>Subject: Re: AeroElec
tric-List: E-bus diode=0A> =0A>=0A>--> AeroElectric-List message posted by
: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>=0A>=0A>At 08:04
oger & Jean" <mrspudandcompany@verizon.net>=0A>> =0A>>> Would this Schottky
Diode be suitable for E-bus Feed?=0A>>> http://www.mouser.com/ProductDetai
l/IXYS/DSA300I200NA/?qs=sGAEpiMZZMtQ8nqTKtFS%2fAkrg%2fe%2fM1X2RJuduJKKNsI
%3d=0A>>> It appears to be very robust with easy mounting.=0A>> =0A>> =0A>>
The spec sheet says the forward voltage drop is 0.98V.- Do you think tha
t is acceptable?=0A>=0A>- That's a worst case condition which is almost n
ever=0A>- realized in the manner in which we use them. Furhter,=0A>- as
explained in other narratives concerning drops=0A>- in the e-bus normal
feed diodes, there's no chance=0A>- that a diode offers an 'unacceptable'
voltage drop.=0A>=0A>- The normally expected drops in all forms of diode
=0A>- will produce an alternator-operating e-bus voltage=0A>- no less t
han 13v and probably HIGHER. While operating=0A>- the e-bus battery-only,
available voltage will be 12.5=0A>- volts or LOWER . . . and we expect t
hings to work=0A>- just fine at that level too.=0A>=0A>- Don't get wrap
ped about the "oh-my-gosh-there's-=0A>- a-voltage-drop" axle.- It the g
rand scheme of=0A>- things its immaterial. This is why we've offered=0A>
- and recommended the plain-vanilla, bridge rectifier=0A>- with fast-on
tabs for nearly 20 years . . . cheap,=0A>- easy to mount and you can get
the things at=0A>- Radio Shack.=0A>=0A>=0A>=0A>=0A>- Bob . . . =0A>=0A
=============0A>=0A>=0A>=0A>=0A>=0A>
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