Today's Message Index:
----------------------
1. 09:45 AM - What is a ON-ON-ON switch used for? (rparigor@SUFFOLK.LIB.NY.US)
2. 10:11 AM - Updating my Connection Book (MLWynn@aol.com)
3. 12:51 PM - Plasma III Wiring Again! (Bruce Bell)
4. 01:46 PM - Re: Updating my Connection Book (Robert L. Nuckolls, III)
5. 03:01 PM - Re: What is a ON-ON-ON switch used for? (Robert L. Nuckolls, III)
6. 03:04 PM - Re: What is a ON-ON-ON switch used for? (Ken)
Message 1
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Subject: | What is a ON-ON-ON switch used for? |
What is a ON-ON-ON switch used for?
We are in process of
balancing illumination on our bird at the moment.
I would
rather have a mini four pole triple throw switch than a four pole double
throw switch (center off)to accomplish task at hand.
Hmmm, Newark sells a mini four pole double throw switch with three
positions and it is called ON-ON-ON.
For under 4 bucks I
ordered one.
Not useful for me. The way it works iswith
thetoggle in the up position the center common is connected to the
lower ON. With toggle in the middle position the common is connected to
the upper ON, and with toggle in the down position the common is connected
to the upper ON.
In other words this switch does the exact same
thing with the toggle in the middle and down position. What exactly is a
switch like this used for with two positions doing exactly the same
thing?
I don't have much space (rotary switch?) is there such a
thing as a four pole, triple throw three position mini toggle switch with
three positions and 16 terminals?
If so where can you get
one?
I can make do with a 4 pole, double throw with center off
but the 4PTT would be "much more better" if such a thing
exists.
I want to control intensity of several different light
sources to achieve a "Day", "Night" and "Dark
night" level of intensity. Since all the light sources are different
(one linear regulator would not cut it), will choose resistors that are
close to what I want, and fit mini potentiometers to fine tune. A DPDT
could have up "Day", down "Night" and "Dark
night" could use middle to turn everything off. A triple throw would
allow me to have 3 intensities.
Thx.
Ron Parigoris
Message 2
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Subject: | Updating my Connection Book |
Hi folks,
I bought version 11 a couple of years ago. I am at the FWF portion of an RV
8 build and am starting to plan the wiring. I should say to begin with,
this book has been a true revelation about planning and executing a reliable
electrical system. I cannot begin to thank Bob for the work he has put into the
book and this site.
While I am perfectly fine with buying an entirely new copy, do I understand
correctly that I can keep my book up to date by downloading and printing the
files here:
_http://www.aeroelectric.com/Rev12A/_ (http://www.aeroelectric.com/Rev12A/)
Is there anything else I need to do to stay current?
I'm hoping to get the E-Book version to Rev 12 up on
the website early next week . . . and get the files off
to the printers for paper copies.
What is the E-Book version and how do I access that?
As a slightly off topic question, when are we going to see chapter 15
Pressure Measurement?
Regards,
Michael Wynn
RV 8 FWF
San Ramon, CA
I'm hoping to get the E-Book version to Rev 12 up on
the website early next week . . . and get the files off
to the printers for paper copies.
**************A Good Credit Score is 700 or Above. See yours in just 2 easy
steps!
www.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26hmpgID%3D62%26bcd%3DfebemailfooterNO62)
Message 3
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Subject: | Plasma III Wiring Again! |
I have installed my Plasma III on the hot side of the fire wall. I have a
shield around it with air from the rear engine baffle. Has anyone just ran a
ground wire from pin 15 to ground and pin 8 direct to the Mag switch and
then to the battery buss? The pull able breaker would be a 5A fuse. Why
would the power wire have to be shielded? Thanks! Bruce Bell RV-4 N23BB 65
hours so far. You got to love it! DO NOT ARCHIVE!
Message 4
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Subject: | Re: Updating my Connection Book |
Those are interim files that are being edited.
Don't download updates until they are officially
noted in the "Whats's New" section.
The E-book is an alternative to the paper book.
It will be offered for the first time at Revision 12.
Right now, about half the book is still in legacy
word processor formats and I need to get ALL of
the present material updated and in common format
before I add any new materials. Ch15 on pressure
and 19 on motors will be next after that.
Bob . . .
At 12:00 PM 3/6/2009, you wrote:
>Hi folks,
>
>I bought version 11 a couple of years ago. I am at the FWF portion
>of an RV 8 build and am starting to plan the wiring. I should say
>to begin with, this book has been a true revelation about planning
>and executing a reliable electrical system. I cannot begin to thank
>Bob for the work he has put into the book and this site.
>
>While I am perfectly fine with buying an entirely new copy, do I
>understand correctly that I can keep my book up to date by
>downloading and printing the files here:
>
><http://www.aeroelectric.com/Rev12A/>http://www.aeroelectric.com/Rev12A/
>
>Is there anything else I need to do to stay current?
>
>I'm hoping to get the E-Book version to Rev 12 up on
>the website early next week . . . and get the files off
>to the printers for paper copies.
>
>What is the E-Book version and how do I access that?
>
>As a slightly off topic question, when are we going to see chapter
>15 Pressure Measurement?
Message 5
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Subject: | Re: What is a ON-ON-ON switch used for? |
At 11:39 AM 3/6/2009, you wrote:
>What is a ON-ON-ON switch used for?
>
>We are in process of balancing illumination on our bird at the moment.
>
>I would rather have a mini four pole triple throw switch than a four
>pole double throw switch (center off) to accomplish task at hand.
>
>Hmmm, Newark sells a mini four pole double throw switch with three
>positions and it is called ON-ON-ON.
>
>For under 4 bucks I ordered one.
>
>Not useful for me. The way it works is with the toggle in the up
>position the center common is connected to the lower ON. With toggle
>in the middle position the common is connected to the upper ON, and
>with toggle in the down position the common is connected to the upper ON.
>
>In other words this switch does the exact same thing with the toggle
>in the middle and down position. What exactly is a switch like this
>used for with two positions doing exactly the same thing?
They are not doing the same thing. ON-ON-ON is progressive
transfer as described in detail in the chapter on switches.
The 4-pole device can be wired to emulate a two-pole, three-position
switch.
>I don't have much space (rotary switch?) is there such a thing as a
>four pole, triple throw three position mini toggle switch with three
>positions and 16 terminals?
>
>If so where can you get one?
>I can make do with a 4 pole, double throw with center off but the
>4PTT would be "much more better" if such a thing exists.
>
>I want to control intensity of several different light sources to
>achieve a "Day", "Night" and "Dark night" level of intensity. Since
>all the light sources are different (one linear regulator would not
>cut it), will choose resistors that are close to what I want, and
>fit mini potentiometers to fine tune. A DPDT could have up "Day",
>down "Night" and "Dark night" could use middle to turn everything
>off. A triple throw would allow me to have 3 intensities.
>
>Thx.
>Ron Parigoris
Grayhill
#51PT30-01-4-03N
http://tinyurl.com/bsws4r
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
Message 6
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Subject: | Re: What is a ON-ON-ON switch used for? |
Ron
Have you considered putting a diode in series with each of your lighting
circuits and just using a single pole switch instead of four poles. A
0.6 volt drop from a 10 cent diode usually doesn't dim full brightness
very much with a 14+ volt supply. I might be missing something here
because I don't see how you will get more than two intensities plus off
from a double throw switch though.
I found it more satisfactory to fit 4 miniature pots. Electronic dimmers
can always be remotely located from the pots but I've got 4 LM317 based
dimmers in a space not much bigger than a cigarette pack and they
control incandescents, LED's, and EL strips nicely. Somewhat different
output voltage ranges for each type of light.
Ken
> I want to control intensity of several different light sources to
> achieve a "Day", "Night" and "Dark night" level of intensity. Since all
> the light sources are different (one linear regulator would not cut it),
> will choose resistors that are close to what I want, and fit mini
> potentiometers to fine tune. A DPDT could have up "Day", down "Night"
> and "Dark night" could use middle to turn everything off. A triple throw
> would allow me to have 3 intensities.
>
> Thx.
> Ron Parigoris
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