Today's Message Index:
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1. 06:45 AM - Re: Dimmers driving displays (GLEN MATEJCEK)
2. 08:13 AM - Re: Re: Dimmers driving displays (C&K)
3. 11:25 AM - Re: Re: Dimmers driving displays... (john Snapp)
4. 01:38 PM - Re: Dimmers driving displays... (user9253)
Message 1
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| Subject: | Re: Dimmers driving displays |
>
>
> How are others solving this problem? I am trying to avoid having 17 dimmer
> controls.
>
> Thoughts?
>
> Andy
>
See: http://www.periheliondesign.com/egpavr.htm
IIRC, the incorporated switch is SPDT, so the OFF function can be made an
ON function.
Check with Eric; I'm surprised he's not chimed in yet...
Message 2
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| Subject: | Re: Dimmers driving displays |
Trutrak did this automatically as my ADI goes full bright when the
pre-existing dimmer circuit is off which seems to be what you want in
order to keep the post lights off during the day.
There are ways to trigger a 12 volt relay when the dimmer voltage is
minimum. I'd probably look at using an even cheaper Mosfet transistor
instead of the relay but a relay is simple. You could feed the coil
with a comparator circuit that turns on at any dimmer voltage you wish.
An ic comparator (or any op amp) could do that with a couple of
resistors added. Or a transistor and zener diode setup somewhat similar
to what triggers the OVM module would also do it. A couple of dollars
plus a relay and shipping if you don't have parts on hand but packaging
it is more awkward than just adding another switch. Stick it in a
plastic pill box and tie it to existing wires or something would work.
I actually like lots of dimmer controls to allow precise harmonizing
various intensities. Some commercial aircraft do indeed have 17 dimmer
controls. Switches are dead simple to troubleshoot and maintain.
Ken
On 03/04/2015 9:42 AM, GLEN MATEJCEK wrote:
>
>
> How are others solving this problem? I am trying to avoid having
> 17 dimmer controls.
>
> Thoughts?
>
> Andy
>
>
> See: http://www.periheliondesign.com/egpavr.htm
>
> IIRC, the incorporated switch is SPDT, so the OFF function can be made
> an ON function.
>
> Check with Eric; I'm surprised he's not chimed in yet...
> *
>
>
> *
Message 3
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| Subject: | Re: Dimmers driving displays... |
I simply used the relay and connected the relay to my existing nav light switch
to switch the relay. That way I did not have to add any extra switches,
John Snapp
+1.303.810.0600
( excuse the typos. This email was sent from a mobile device!)
> On Apr 2, 2015, at 10:55 AM, andymeyer <ameyer@mil-amax.com> wrote:
>
>
> No switched side of that dimmer knob... It's simply a pot - it may go open when
all of the way dim - not sure... I'd rather not change out the pot - something
simple and inline to the two instruments would be ideal. I thought about a
low pull-in voltage relay, but pull-in would have to be at a couple of volts
and very low current and rated for continuous duty at 14 volts, and still very
low current.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=440206#440206
>
>
>
>
>
>
>
>
>
>
Message 4
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| Subject: | Re: Dimmers driving displays... |
How about this circuit?
http://tinyurl.com/Low-Voltage-Indicator
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=440256#440256
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