---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Mon 04/09/07: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:42 AM - Re: Starter contactor location (Robert L. Nuckolls, III) 2. 06:30 AM - Seminar in West Bend, WI (Robert L. Nuckolls, III) 3. 07:23 AM - Re: Final schematic (Gaye and Vaughn) 4. 07:33 AM - Re: aux music input quiet on flightcom 403mc (Bill Putney) 5. 06:17 PM - Dimmer for 5 volt lights (Don Vs) 6. 06:55 PM - Re: Final schematic (Roger Cole) 7. 07:52 PM - Re: Final schematic (sarg314) 8. 09:41 PM - Re: Dimmer for 5 volt lights (Robert L. Nuckolls, III) 9. 10:23 PM - Re: Dimmer for 5 volt lights (Don Vs) 10. 10:43 PM - Re: Dimmer for 5 volt lights (Ron Quillin) ________________________________ Message 1 _____________________________________ Time: 05:42:24 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Starter contactor location At 10:34 AM 4/8/2007 -0400, you wrote: > >OOPS > >Bob had already replied, my bad. NOT AT ALL my friend. It's not uncommon that a question here on the list generates more than one answer. Many times the answers are identical, but sometimes just similar or even an alternative. No matter how what you answer or whether it's repetitive, the act of formulating a collection of ideas into cogent words is a tool of the teacher. If you simply parrot what I or anyone else offers then you're demonstrating a level of knowledge but your ability to teach the concept from a position of understanding is not demonstrated. When you offer words that describe a collection of simple-ideas crafted into a recipe for success that you understand, then sir you are honing your skills as a teacher and that is appropriate any time. Bob . . . ---------------------------------------- ( IF one aspires to be "world class", ) ( what ever you do must be exercised ) ( EVERY day . . . ) ( R. L. Nuckolls III ) ---------------------------------------- ________________________________ Message 2 _____________________________________ Time: 06:30:14 AM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: Seminar in West Bend, WI Dr. Dee and are going to visit EAA Chapter 1158 in West Bend, Wisconsin next month for a weekend of good conversation and to deliver the third in our series of beta-seminars that's moving rapidly into the electronic presentations philosophies. We used to carry a lot of hands-on stuff on these trips but TSA is making it increasingly difficult. The alternative is to move the presentations to a "thumb-drive" and expand the scope of visuals utilized to replace the loss of hardware. One advantage of the new format is that everyone can take a copy of the presentation home with them. This will reduce the need to take notes and offer attendees an opportunity to share what they've learned with folks back at their own chapters. We'll invite the curious and motivated to consider joining us in what promises to be an exemplary meeting facility. I'm hearing some really amazing descriptions of this venue. Join us if you can at: http://aeroelectric.com/seminars/WestBend.html Bob . . . ---------------------------------------- ( IF one aspires to be "world class", ) ( what ever you do must be exercised ) ( EVERY day . . . ) ( R. L. Nuckolls III ) ---------------------------------------- ________________________________ Message 3 _____________________________________ Time: 07:23:08 AM PST US From: "Gaye and Vaughn" Subject: Re: AeroElectric-List: Final schematic Brevan Thanks for the comments. The flaps and monowheel are manually controlled with one lever. I will contact Airmaster to see if they recommend a switch for the prop. They told me that if it quit working, it stayed in the last postion that it was in before it failed. I did not think to ask if I needed an on/off switch. Thanks for bringing that to my attention. Vaughn Teegarden Europa XS mono, Rotax 914 ----- Original Message ----- From: B Tomm To: aeroelectric-list@matronics.com Sent: Sunday, April 08, 2007 3:53 PM Subject: RE: AeroElectric-List: Final schematic Are the flaps electric? If so, do they get there power from a fused circuit or a breaker? Likewise, shouldn't the prop controller come from a switched breaker circuit to aid in "resetting" it, and also positively overriding it's operation? What type of electric prop is it? Bevan RV7A finishing kit ------------------------------------------------------------------------- ----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Gaye and Vaughn Sent: Sunday, April 08, 2007 9:21 AM To: aeroelectric-list@matronics.com Subject: AeroElectric-List: Final schematic I am attaching my final(almost) main schematic. There are lots of switches, but all up makes it run and all down kills the sparks. All subscribers feel free to critique, not criticize, due to delicate feelings of neophyte. Vaughn Teegarden Europa XS mono, Rotax 914 ________________________________ Message 4 _____________________________________ Time: 07:33:57 AM PST US From: Bill Putney Subject: Re: AeroElectric-List: aux music input quiet on flightcom 403mc I had this same problem with my intercom. The basic problem is that the MP3 player has headphone outputs that are low impedance. That is to say low voltage but high current output. The intercom input is high impedance and wants a little higher voltage. I fixed the problem by making a little box with 2 Radio Shack speaker to line transformers in it (one for left and one for right) and a pair of 1/8" stereo jacks. If I remember correctly the transformers were like 8 ohms on one side and 2000 ohms on the other side. That effectively gives a 1:250 increase in volume level to the intercom. I ruined an MP3 player running it at 100% volume and it still wasn't loud enough before I built this box. Now I never run above half volume. The best thing is that the transformer box doesn't need batteries and the battery in the MP3 player lasts a lot longer because it's not working so hard. I think if you need a mono output to your intercom, you could either mix the high impedance outputs of the transformers with a couple of 1K resistors or mix the inputs with a couple of 10 ohm resistors and then take that and put it through a single transformer. - Bill Ron Quillin wrote: > A couple of comments if I may. First I have to agree with Bob, > directly connecting two outputs to one another is not a good idea, at > all, and can cause damage to the output circuit of the source device. > 47 ohms would work, but at a minimum use a value equal to the > impedance (resistance) of the earphone/speaker normally connected; say > 10 ohms minimum. Also, the 10 ohm 10uF combination will limit low > frequencies below ~1600Hz; Ok if you don't want much low end, but... > > Attached is a pdf you may want to try. Keep the rest as you had it if > it seems to work well. This one will sum (mix) the L & R signals > without nuking the mp3 player's output, should give you cleaner audio > as well. If you don't like the 10/100 ohm pair, go to 100/1k instead. > Also with this combination the LF will be extended down to about > 160Hz. > > Ron Q. > old audio engineer. > >> > Anyway, I'm not >> > an electrical engineer (I'm mechanical) so I am really not all that >> great >> > at designing circuits, but this one works for me. I thought I would >> post >> > it in case anybody want to use it as a starting point for their own >> amp. >> > >> >http://www.geocities.com/bryanflood2001/AudioAmpfor403MC.bmp >> >> You might want to consider a couple of resistors in >> series with each of the stereo outputs before you >> bring them together as a monophonic mix. Output >> signals from the two channels are not identical >> and some degradation of audio will occur when the >> outputs "load" each other as described in the chapter >> on audio systems. Something on the order of 47 ohms >> per side is suggested. >> >> Bob . . . ________________________________ Message 5 _____________________________________ Time: 06:17:39 PM PST US From: "Don Vs" Subject: AeroElectric-List: Dimmer for 5 volt lights I am looking gor a recopmendation on purchase of a dimmer system for 5 volt panel lights. My AC has a 14 volt system and the people who are building an ecgraved panel for me recomended 5 volt lights vs 14 volt because they last considerably longer.So, does anyone know of a good dimmer with a masx output of 5 volts with 14 volts in? Thanks. Don ________________________________ Message 6 _____________________________________ Time: 06:55:20 PM PST US From: Roger Cole Subject: Re: AeroElectric-List: Final schematic Vaughn, My only suggestion would be to make a space on the panel between the four groups of switches (i.e/, DC Power, Engine, Avionics, and Lights). That way you will be able to find the switch that you want by feel in darkness, turbulence, or whatever. Roger Cole Murphy Elite (building wings) On Apr 8, 2007, at 11:20 AM, Gaye and Vaughn wrote: > I am attaching my final(almost) main schematic. There are lots of > switches, but all up makes it run and all down kills the sparks. > All subscribers feel free to critique, not criticize, due to > delicate feelings of neophyte. > > Vaughn Teegarden > Europa XS mono, Rotax 914 > > > ________________________________ Message 7 _____________________________________ Time: 07:52:06 PM PST US From: sarg314 Subject: Re: AeroElectric-List: Final schematic I strongly second roger's observation. A row of a dozen identical toggle switches spaced exactly evenly is hard to use - you'll find yourself trying to read the little labels in flight. Mine are in groups of 2 or 3 and not even all in a row at the bottom of the panel. It makes it easy to find the switch you want without looking or even in the dark. I recall an article about panel design in Kit Planes a few years ago that made this same point. Roger Cole wrote: > Vaughn, > My only suggestion would be to make a space on the panel between the > four groups of switches (i.e/, DC Power, Engine, Avionics, and > Lights). That way you will be able to find the switch that you want > by feel in darkness, turbulence, or whatever. > Roger Cole Tom Sargent, RV-6A, wiring. ________________________________ Message 8 _____________________________________ Time: 09:41:15 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Dimmer for 5 volt lights At 06:17 PM 4/9/2007 -0700, you wrote: > >I am looking gor a recopmendation on purchase of a dimmer system for 5 volt >panel lights. My AC has a 14 volt system and the people who are building an >ecgraved panel for me recomended 5 volt lights vs 14 volt because they last >considerably longer.So, does anyone know of a good dimmer with a masx output >of 5 volts with 14 volts in? Thanks. Don It just so happens that I'm building one for a customer. Details are not finalized yet but it looks like the critter will be rated at 0.7 to 5.0 volts output at up to 4A. It will be packaged in the same enclosure as shown on page 2 of http://www.aeroelectric.com/Catalog/AEC/9011/9011-700-1C.pdf I'll know more in about a week. Prototyping parts are expected here later this week but I won't be able to play with them until next week. I think the price will be something on the order of $55 and will include the externally mounted dimmer control pot. The part number will be AEC9033-1. Bob . . . ---------------------------------------- ( IF one aspires to be "world class", ) ( what ever you do must be exercised ) ( EVERY day . . . ) ( R. L. Nuckolls III ) ---------------------------------------- ________________________________ Message 9 _____________________________________ Time: 10:23:29 PM PST US From: "Don Vs" Subject: RE: AeroElectric-List: Dimmer for 5 volt lights Bob, I will take one. I need to know the size hole that the pot will require in the panel so that I can proceed with that part of the project. If you can please send me that information and please let me know when the dimmer is available. Thanks. Don -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Robert L. Nuckolls, III Sent: Monday, April 09, 2007 10:40 PM Subject: Re: AeroElectric-List: Dimmer for 5 volt lights At 06:17 PM 4/9/2007 -0700, you wrote: > >I am looking gor a recopmendation on purchase of a dimmer system for 5 volt >panel lights. My AC has a 14 volt system and the people who are building an >ecgraved panel for me recomended 5 volt lights vs 14 volt because they last >considerably longer.So, does anyone know of a good dimmer with a masx output >of 5 volts with 14 volts in? Thanks. Don It just so happens that I'm building one for a customer. Details are not finalized yet but it looks like the critter will be rated at 0.7 to 5.0 volts output at up to 4A. It will be packaged in the same enclosure as shown on page 2 of http://www.aeroelectric.com/Catalog/AEC/9011/9011-700-1C.pdf I'll know more in about a week. Prototyping parts are expected here later this week but I won't be able to play with them until next week. I think the price will be something on the order of $55 and will include the externally mounted dimmer control pot. The part number will be AEC9033-1. Bob . . . ---------------------------------------- ( IF one aspires to be "world class", ) ( what ever you do must be exercised ) ( EVERY day . . . ) ( R. L. Nuckolls III ) ---------------------------------------- ________________________________ Message 10 ____________________________________ Time: 10:43:21 PM PST US Subject: Re: AeroElectric-List: Dimmer for 5 volt lights From: Ron Quillin At 22:40 4/9/2007, you wrote: >I think the price will be something on the order of $55 > and will include the externally mounted dimmer control > pot. > > The part number will be AEC9033-1. > > Bob . . . Any chance you could make it track an existing 14V dimmer circuit as an option? Ron Q. ------------------------------------------------------------------------------------- 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.