---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 04/03/15: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 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 _____________________________________ Time: 06:45:04 AM PST US Subject: AeroElectric-List: Re: Dimmers driving displays From: GLEN MATEJCEK > > > 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 _____________________________________ Time: 08:13:56 AM PST US From: C&K Subject: Re: AeroElectric-List: 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 _____________________________________ Time: 11:25:41 AM PST US From: john Snapp Subject: Re: AeroElectric-List: 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 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 _____________________________________ Time: 01:38:55 PM PST US Subject: AeroElectric-List: Re: Dimmers driving displays... From: "user9253" 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 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.