AeroElectric-List Digest Archive

Sun 02/05/17


Total Messages Posted: 16



Today's Message Index:
----------------------
 
     1. 05:13 AM - Re: Why is this diode there ? (MMiller)
     2. 05:53 AM - Re: Single EPL101x Series Dimmer For Dynon Skyview Brightness and RockRack Switch LEDs (Charlie England)
     3. 06:39 AM - Re: Why is this diode there ? (Robert L. Nuckolls, III)
     4. 07:29 AM - Re: RockRack Switches (Robert L. Nuckolls, III)
     5. 08:43 AM - Re: Single EPL101x Series Dimmer For Dynon Skyview Brightness and RockRack Switch LEDs (William Hunter)
     6. 11:47 AM - Re: Single EPL101x Series Dimmer For Dynon Skyview Brightness and RockRack Switch LEDs (Charlie England)
     7. 12:17 PM - Off-On-On Switch (Paul Eckenroth)
     8. 02:13 PM - Re: Single EPL101x Series Dimmer For Dynon Skyview Brightness a (user9253)
     9. 02:56 PM - Re: Off-On-On Switch (user9253)
    10. 02:58 PM - solenoid (Mark Donahue)
    11. 03:00 PM - Re: Off-On-On Switch (John Tipton)
    12. 03:40 PM - Re: RockRack Switches (donjohnston)
    13. 03:47 PM - Re: solenoid (user9253)
    14. 04:56 PM - Re: Re: Single EPL101x Series Dimmer For Dynon Skyview Brightness a (William Hunter)
    15. 05:52 PM - Re: Re: Single EPL101x Series Dimmer For Dynon Skyview Brightness a (Charlie England)
    16. 08:11 PM - Re: Single EPL101x Series Dimmer For Dynon Skyview Brightness a (user9253)
 
 
 


Message 1


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    Time: 05:13:49 AM PST US
    Subject: Re: Why is this diode there ?
    From: "MMiller" <mmill@optonline.net>
    The diode is minor, why do you want the starter contactor to self hold? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465783#465783


    Message 2


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    Time: 05:53:42 AM PST US
    From: Charlie England <ceengland7@gmail.com>
    Subject: Re: Single EPL101x Series Dimmer For Dynon Skyview
    Brightness and RockRack Switch LEDs Which Dynon screen do you have? A friend is winding up a Skyview install, and just mentioned to me that it has a PWM dimmer feature built in that will control panel LEDs in concert with screen brightness. He did mention that the PWM functions on the ground path, so the LEDs are fed 12V and the ground side of the LEDs are wired to the PWM dimmer terminal in the Skyview. So if that's what you have, it's worth diving back into the manual and/or giving Dynon a call. The diagram under the red X shows your control wired as a rheostat. The top diagram shows it wired as a potentiometer (voltage divider). If you wire it as a rheostat, it's unlikely to work well as an LED dimmer. It's unlikely to work well as an LED dimmer, anyway, unless you just get lucky and its resistance value range is perfect for the supply voltage/LED current range needed for bright to dim operation. https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie =UTF-8#q=rheostat+vs+potentiometer Charlie On Sat, Feb 4, 2017 at 11:24 PM, William Hunter <billhuntersemail@gmail.com > wrote: > Hi All (again), > > > I am trying to integrate a single rheostat for use with both the RockRack > switch LEDs and the Dynon Skyview. In other words I want to have the > single rheostat dim both the RockRack indicator LEDs and the Dynon > brightness with a turn of a single knob. > > > The Rheostat I bought is a bit confusing. I thought it would only have > only two wires (one in-ey and one out-ey) and I would simply connect the > in-ey wire to a fused 12 VDC source and then connect the out-ey to both t he > Dynon and the RockRack LED input spade. > > > This rheostat however has THREE wires. > > > The instructions have a =9CSimplified Hookup=9D but it states that this hookup > is for =9CIncandescent Lamps Only=9D. Is there a reason why I could not use > that hookup for the RockRack LEDs? > > > (Attached is a PDF of the instructions for the Rheostat) > > > OTHER INFORMATION: > > > The RockRack have an LED that illuminates when the switch is placed in th e > ON position. The voltage source for this LED can either be the output > voltage of the switch itself (example: Turn the landing light ON and the > power that goes out to the landing light is also tapped off to provide th e > power for the LED in the switch) or a rheostat with a controlled voltage > can be used as the source of power for the LEDs to make them dimmable. > > > I have the Dynon part figured outit has a =9Cpin 25 =9D that is a pin that > looks for a source signal voltage and when it sees a certain voltage, the > screens will dim to a user programmable brightness (example: If pin 25 > sees 14 VDC then the screens will go to 100 percent brightness and if the y > see 7 VDC then they will dim to 50 percent). > > > I do not have the schematic for the RockRack switches so I will have to > multimeter the spade connectors to see how to wire them. > > > Any help would be greatly appreciated > > > .. > > > Cheers!!! > > > Bill Hunter > >


    Message 3


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    Time: 06:39:00 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: Why is this diode there ?
    At 12:33 PM 2/4/2017, you wrote: >Why is this diode in the Alternator B line ? > >Is it old thinking from way back in the day and old tech maybe to >protect the older alternators ? > > What is the source of this drawing? This diode MAY have been offered as an alternative to b-lead protection for failure/crash faults on the line to the alternator. but it's in error as to how the starter contactor is wired. There's also a curious diode in the ground power contactor wiring. This drawing has the 'smell' of having been copied from some more credible source as a 'simplified' wiring diagram not unlike those in the Cessna Pilot Handbooks of yesteryear. A guy named C.E. Fraley used to sit right behind me in Cessna's Tech Pubs department. He used to do all of the POH for the Pawnee Plant. On several occasions I was asked to vet figures that he distilled from the production wiring documents. Emacs! The simplification process needs to be conducted carefully lest errors creep in. I suspect that the drawing you cite may have fallen victim to errors in transcription. Bob . . .


    Message 4


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    Time: 07:29:07 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: RockRack Switches
    At 01:33 PM 2/4/2017, you wrote: >Does anyone by chance have a schematic for the ON-OFF-ON Rockrack switches?=C2 Do you have one of these switches in hand? Bob . . .


    Message 5


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    Time: 08:43:11 AM PST US
    From: "William Hunter" <billhuntersemail@gmail.com>
    Subject: Single EPL101x Series Dimmer For Dynon Skyview
    Brightness and RockRack Switch LEDs Charlie, !!!THANKS!!! Learning is taking place I am running dual SV-1000s plus the KNOBS, AUTOPILOT controller and the SV-RADIO. A SkyView display=99s backlighting can be controlled by the menu SCREEN > DIM to access the DIM Menu but that is a hassle so I want an external dimmer knob. The Skyview has a pin 26 and this is a 120 HZ Pulse Width Modulation (PWM) signal and it looks like that is what I want. I have 8 RockRack switches and each has an indicator LED. If I do use pin 26 as the PWM power source for the switch indicator LEDs then I imagine I simply branch off of pin 26 with 8 wires and run each to the "+" spade of the switch LED and then run the "-" spade of the switch LED to a convenient ground. QUESTION #2: I assume that I wire up my external EPL101x Series 12 V DC Dimmer as a simplified rheostat (bottom diagram) as opposed to a potentiometer (top diagram) in the instruction sheet and then that variable 12 VDC output signal of the rheostat will become the input signal to pin 25 of the Skyview? http://www.pcarv.com/images/Dimmer/EPL1012%20Website%20Instruction%20Shee t.pdf THANKS AGAIN I GREATLY APPRECIATE YOUR HELP (cyber yelling intentional)!!! .. Cheers!!! Bill Hunter From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Charlie England Sent: Sunday, February 5, 2017 5:51 AM Subject: Re: AeroElectric-List: Single EPL101x Series Dimmer For Dynon Skyview Brightness and RockRack Switch LEDs Which Dynon screen do you have? A friend is winding up a Skyview install, and just mentioned to me that it has a PWM dimmer feature built in that will control panel LEDs in concert with screen brightness. He did mention that the PWM functions on the ground path, so the LEDs are fed 12V and the ground side of the LEDs are wired to the PWM dimmer terminal in the Skyview. So if that's what you have, it's worth diving back into the manual and/or giving Dynon a call. The diagram under the red X shows your control wired as a rheostat. The top diagram shows it wired as a potentiometer (voltage divider). If you wire it as a rheostat, it's unlikely to work well as an LED dimmer. It's unlikely to work well as an LED dimmer, anyway, unless you just get lucky and its resistance value range is perfect for the supply voltage/LED current range needed for bright to dim operation. https://www.google.com/webhp?sourceid=chrome-instant <https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2& ie=UTF-8#q=rheostat+vs+potentiometer> &ion=1&espv=2&ie=UTF-8#q=rheostat+vs+potentiometer Charlie On Sat, Feb 4, 2017 at 11:24 PM, William Hunter <billhuntersemail@gmail.com <mailto:billhuntersemail@gmail.com> > wrote: Hi All (again), I am trying to integrate a single rheostat for use with both the RockRack switch LEDs and the Dynon Skyview. In other words I want to have the single rheostat dim both the RockRack indicator LEDs and the Dynon brightness with a turn of a single knob. The Rheostat I bought is a bit confusing. I thought it would only have only two wires (one in-ey and one out-ey) and I would simply connect the in-ey wire to a fused 12 VDC source and then connect the out-ey to both the Dynon and the RockRack LED input spade. This rheostat however has THREE wires. The instructions have a =9CSimplified Hookup=9D but it states that this hookup is for =9CIncandescent Lamps Only=9D. Is there a reason why I could not use that hookup for the RockRack LEDs? (Attached is a PDF of the instructions for the Rheostat) OTHER INFORMATION: The RockRack have an LED that illuminates when the switch is placed in the ON position. The voltage source for this LED can either be the output voltage of the switch itself (example: Turn the landing light ON and the power that goes out to the landing light is also tapped off to provide the power for the LED in the switch) or a rheostat with a controlled voltage can be used as the source of power for the LEDs to make them dimmable. I have the Dynon part figured outit has a =9Cpin 25=9D that is a pin that looks for a source signal voltage and when it sees a certain voltage, the screens will dim to a user programmable brightness (example: If pin 25 sees 14 VDC then the screens will go to 100 percent brightness and if they see 7 VDC then they will dim to 50 percent). I do not have the schematic for the RockRack switches so I will have to multimeter the spade connectors to see how to wire them. Any help would be greatly appreciated .. Cheers!!! Bill Hunter


    Message 6


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    Time: 11:47:43 AM PST US
    From: Charlie England <ceengland7@gmail.com>
    Subject: Re: Single EPL101x Series Dimmer For Dynon Skyview
    Brightness and RockRack Switch LEDs I wish I could be more help, but my knowledge of the Skyview is limited to what my friend mentioned to me yesterday. :-) Basing my answer on 'general principles', it's unlikely that wiring it as a rheostat to an actual control pin would do what you want. A control input will likely have a very high input impedance, so varying the rheostat's resistance would cause little voltage change at the control pin (minimal voltage drop because there's minimal current flow through the rheostat). When wired as a potentiometer (voltage divider), the resistance between the 'wiper' (center terminal) and the ground terminal supplies the load, and in combination with the input side resistance (between input and wiper), creates the load so current actually flows through the pot and voltage drops. The control input on the Dynon would then see the varying voltage present on the wiper of the pot. Be sure that you're interpreting correctly how the Dynon pin 25 acts. If it has 14 V on it with the Dynon powered up nothing connected to pin 25, then Dynon is probably expecting you to supply a varying resistance to ground to control the pin. If, on the other hand, there's no voltage on that pin, then it's as you expect and Dynon expects you to supply a varying voltage to the pin. Again: this is speculation since I'm not looking at the Dynon manual. Charlie On Sun, Feb 5, 2017 at 10:38 AM, William Hunter <billhuntersemail@gmail.com > wrote: > Charlie, > > > !!!THANKS!!! > > > Learning is taking place > > > I am running dual SV-1000s plus the KNOBS, AUTOPILOT controller and the > SV-RADIO. > > > A SkyView display=99s backlighting can be controlled by the menu SC REEN > > DIM to access the DIM Menu but that is a hassle so I want an external > dimmer knob. > > > The Skyview has a pin 26 and this is a 120 HZ Pulse Width Modulation (PWM ) > signal and it looks like that is what I want. > > > I have 8 RockRack switches and each has an indicator LED. If I do use pin > 26 as the PWM power source for the switch indicator LEDs then I imagine I > simply branch off of pin 26 with 8 wires and run each to the "+" spade of > the switch LED and then run the "-" spade of the switch LED to a convenie nt > ground. > > > QUESTION #2: I assume that I wire up my external EPL101x Series 12 V DC > Dimmer as a simplified rheostat (bottom diagram) as opposed to a > potentiometer (top diagram) in the instruction sheet and then that variab le > 12 VDC output signal of the rheostat will become the input signal to pin 25 > of the Skyview? > > > http://www.pcarv.com/images/Dimmer/EPL1012%20Website% > 20Instruction%20Sheet.pdf > > > THANKS AGAIN I GREATLY APPRECIATE YOUR HELP (cyber yelling intentional)!! ! > > > .. > > > Cheers!!! > > > Bill Hunter > > > *From:* owner-aeroelectric-list-server@matronics.com [mailto: > owner-aeroelectric-list-server@matronics.com] *On Behalf Of *Charlie > England > *Sent:* Sunday, February 5, 2017 5:51 AM > *To:* aeroelectric-list@matronics.com > *Subject:* Re: AeroElectric-List: Single EPL101x Series Dimmer For Dynon > Skyview Brightness and RockRack Switch LEDs > > > Which Dynon screen do you have? A friend is winding up a Skyview install, > and just mentioned to me that it has a PWM dimmer feature built in that > will control panel LEDs in concert with screen brightness. He did mention > that the PWM functions on the ground path, so the LEDs are fed 12V and th e > ground side of the LEDs are wired to the PWM dimmer terminal in the > Skyview. So if that's what you have, it's worth diving back into the manu al > and/or giving Dynon a call. > > > The diagram under the red X shows your control wired as a rheostat. The > top diagram shows it wired as a potentiometer (voltage divider). If you > wire it as a rheostat, it's unlikely to work well as an LED dimmer. It's > unlikely to work well as an LED dimmer, anyway, unless you just get lucky > and its resistance value range is perfect for the supply voltage/LED > current range needed for bright to dim operation. > > > https://www.google.com/webhp?sourceid=chrome-instant&ion=1& > espv=2&ie=UTF-8#q=rheostat+vs+potentiometer > > > Charlie > > > On Sat, Feb 4, 2017 at 11:24 PM, William Hunter < > billhuntersemail@gmail.com> wrote: > > Hi All (again), > > > I am trying to integrate a single rheostat for use with both the RockRack > switch LEDs and the Dynon Skyview. In other words I want to have the > single rheostat dim both the RockRack indicator LEDs and the Dynon > brightness with a turn of a single knob. > > > The Rheostat I bought is a bit confusing. I thought it would only have > only two wires (one in-ey and one out-ey) and I would simply connect the > in-ey wire to a fused 12 VDC source and then connect the out-ey to both t he > Dynon and the RockRack LED input spade. > > > This rheostat however has THREE wires. > > > The instructions have a =9CSimplified Hookup=9D but it states that this hookup > is for =9CIncandescent Lamps Only=9D. Is there a reason why I could not use > that hookup for the RockRack LEDs? > > > (Attached is a PDF of the instructions for the Rheostat) > > > OTHER INFORMATION: > > > The RockRack have an LED that illuminates when the switch is placed in th e > ON position. The voltage source for this LED can either be the output > voltage of the switch itself (example: Turn the landing light ON and the > power that goes out to the landing light is also tapped off to provide th e > power for the LED in the switch) or a rheostat with a controlled voltage > can be used as the source of power for the LEDs to make them dimmable. > > > I have the Dynon part figured outit has a =9Cpin 25 =9D that is a pin that > looks for a source signal voltage and when it sees a certain voltage, the > screens will dim to a user programmable brightness (example: If pin 25 > sees 14 VDC then the screens will go to 100 percent brightness and if the y > see 7 VDC then they will dim to 50 percent). > > > I do not have the schematic for the RockRack switches so I will have to > multimeter the spade connectors to see how to wire them. > > > Any help would be greatly appreciated > > > .. > > > Cheers!!! > > > Bill Hunter > >


    Message 7


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    Time: 12:17:59 PM PST US
    From: Paul Eckenroth <paul@eckenroth.com>
    Subject: Off-On-On Switch
    Need some help from the experts. I have been looking for a DPDT switch off-on-on non progressive. It seems like such an animal does not exist. The switch will be used for wigwag/ landing lights. I am considering using the wig/wag module sold by Crazed Pilot. Possibly there is another switch that with creative wiring will give off-on-on. If so please advise and include the creative wiring required. I could go with a on-off-on and have what I need but I would like to keep all off functions down which is why I am searching for the requested switch, Thanks Paul Eckenroth


    Message 8


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    Time: 02:13:49 PM PST US
    Subject: Re: Single EPL101x Series Dimmer For Dynon Skyview
    Brightness a
    From: "user9253" <fransew@gmail.com>
    Looking at the SkyView System Installation Guide Revision U, page 4-23 Pin 26 is negative, NOT positive. So connect pin 26 to the negative side of LEDs. The positive side of LEDs need to be connect to positive 12 VDC. Pin 25 expects a voltage, no current. Do NOT use that rheostat. Notice the rheostat directions state in red letters, "Connecting the Red and Black wires directly across 12 Volts will instantly burn out the Dimmer!" Use a 10K potentiometer or ask Dynon what value to use. I do not think it matters as long as the resistance is high enough to limit the current to a few milliamps. Connect the two outside POT terminals to GND and positive 12 volts. Connect the center terminal (wiper) to SkyView pin 25. Disclaimer: I have never wired a SkyView, just read the manual. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465809#465809


    Message 9


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    Time: 02:56:48 PM PST US
    Subject: Re: Off-On-On Switch
    From: "user9253" <fransew@gmail.com>
    Possibly B & C part number S700-2-11 http://www.bandc.aero/toggleswitch-doublepole.aspx or http://www.mouser.com/ProductDetail/Carling-Technologies/STG2EE-53/?qs=lk%252bUld%252bvit6bNyz8ck2TZQ%3d%3d or http://www.digikey.com/product-detail/en/copal-electronics-inc/ET210PA12-Z/563-1873-ND/5086777 ET210PA12Z Datasheet: http://www.nidec-copal-electronics.com/e/catalog/switch/et.pdf ET210PA12Z __ ON ON OFF ON Connecting terminals: 23 , 56 ON Connecting terminals: 56 OFF Connecting terminals: None You could call B & C and get their advice. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465810#465810


    Message 10


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    Time: 02:58:34 PM PST US
    From: "Mark Donahue" <marktdonahue@comcast.net>
    Subject: solenoid
    This is not plane related, but a friend has a diesel engine installation in his craft. He has a solenoid that operates a glow plug during starting sequence (hold key in glow plug position for 15 seconds before turning to start). The pre heat was not working so he has replaced the solenoid per the part list on the manual drawing which lists as 24v. But the system is wired for 12v. So the question is will a 24 volt solenoid work with 12 volt input? Thanks, Mark Donahue


    Message 11


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    Time: 03:00:02 PM PST US
    Subject: Re: Off-On-On Switch
    From: John Tipton <jmtipton@btopenworld.com>
    Paul Would Mike bullocks idea suit you better, not needing the 'crazed pilot' wig wag http://www.rvplane.com/?categoryid=&dayid=1145 John Sent from my iPad ----x--O--x---- > On 5 Feb 2017, at 08:13 pm, Paul Eckenroth <paul@eckenroth.com> wrote: > > Need some help from the experts. I have been looking for a DPDT switch off-on-on non progressive. It seems like such an animal does not exist. The switch will be used for wigwag/ landing lights. I am considering using the wig/wag module sold by Crazed Pilot. Possibly there is another switch that with creative wiring will give off-on-on. If so please advise and include the creative wiring required. I could go with a on-off-on and have what I need but I would like to keep all off functions down which is why I am searching for the requested switch, > > Thanks > Paul Eckenroth


    Message 12


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    Time: 03:40:42 PM PST US
    Subject: Re: RockRack Switches
    From: "donjohnston" <don@velocity-xl.com>
    Is this what you're looking for? http://www.aircraftspruce.com/catalog/pdf/RockRack-connections.pdf Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465813#465813


    Message 13


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    Time: 03:47:28 PM PST US
    Subject: Re: solenoid
    From: "user9253" <fransew@gmail.com>
    Probably will not work. By solenoid, I assume that you mean relay. Once pulled in, a relay will hold with half voltage. The problem is pulling it in initially. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465814#465814


    Message 14


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    Time: 04:56:53 PM PST US
    From: "William Hunter" <billhuntersemail@gmail.com>
    Subject: Re: Single EPL101x Series Dimmer For Dynon Skyview
    Brightness a Charlie and Joe, As always I am very grateful for your help. So the "DIM OUTPUT" signal is essentially a "variable ground" (I think they could have called it something different than "output"...just say 'in). The Skyview manual states that the DIM OUTPUT "can sink a maximum current of 120mA and a maximum voltage of 40V." So for my landing light circuit simply branch off one extra wire from the same spade as the circuit that goes to the landing light (+) and run this second wire to the (+) spade of the switch indicator light? I just received this from the dimmer manufacturer: "To clarify, the EPL1012 is a pulse width modulated power switch and not a rheostat. The switching takes place between the red wire and the black wire. The white wire supplies power to the switching circuit at around 300 Hz. Please note that there is no current limiting within the dimmer." Since the dimmer is essentially a variable voltage digital signal I am curious to see if it would work for the pin 25. I am hoping against hope because I already cut the hole in my panel for the dimmer...and I really like the looks of the little knob. I will ask Dynon. THANKS AGAIN!!!! .. Cheers!!! Bill Hunter -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of user9253 Sent: Sunday, February 5, 2017 2:10 PM Subject: AeroElectric-List: Re: Single EPL101x Series Dimmer For Dynon Skyview Brightness a Looking at the SkyView System Installation Guide Revision U, page 4-23 Pin 26 is negative, NOT positive. So connect pin 26 to the negative side of LEDs. The positive side of LEDs need to be connect to positive 12 VDC. Pin 25 expects a voltage, no current. Do NOT use that rheostat. Notice the rheostat directions state in red letters, "Connecting the Red and Black wires directly across 12 Volts will instantly burn out the Dimmer!" Use a 10K potentiometer or ask Dynon what value to use. I do not think it matters as long as the resistance is high enough to limit the current to a few milliamps. Connect the two outside POT terminals to GND and positive 12 volts. Connect the center terminal (wiper) to SkyView pin 25. Disclaimer: I have never wired a SkyView, just read the manual. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465809#465809


    Message 15


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    Time: 05:52:18 PM PST US
    Subject: Re: Single EPL101x Series Dimmer For Dynon Skyview
    Brightness a
    From: Charlie England <ceengland7@gmail.com>
    I wondered about whether that gadget was just a potentiometer, but there wasn't enough info in the brochure to tell. You might be able to use it to control overall system brightness, but you need to consult the manual (and Dynon). You *really* need to speak with, as in on the phone, Dynon. Again, I don't have the manual. But your description of the language indicates that pin 25 is the pin I mentioned in my earlier email. Key words are 'output' and 'sink'. They didn't call it an 'in' because it isn't listening; it's controlling. Sink type controls can be really confusing to understand, if you're not 'electron indoctrinated'. :-) Think of it like the Master switch in the Z diagrams; the Master is a sink-type control for the master contactor. It works on the ground side of the circuit. (Double E's, please forgive the analogy...) If we're getting the full picture on what the pin is doing, you would connect bus supply voltage to any LEDs you want lit, and the other leads would be collected and tied to pin 25. The LEDs' brightness will then track the Skyview's brightness. You have to be sure that the total current of all the LEDs added together is less than 120mA (which isn't much). Also, know that if you have LEDs of different pedigrees, they will all track the Skyview, but will likely have different relative intensities. That can be adjusted by inserting various value resisters in each LED's circuit (another discussion). For dimming a landing light *indicator* LED, you'd tie the load side of the switch (the + terminal of the landing light) to the indicator LED, and the other terminal of the indicator LED to pin 25. Charlie On 2/5/2017 6:52 PM, William Hunter wrote: > > Charlie and Joe, > > As always I am very grateful for your help. > > So the "DIM OUTPUT" signal is essentially a "variable ground" (I think they could have called it something different than "output"...just say 'in). > > The Skyview manual states that the DIM OUTPUT "can sink a maximum current of 120mA and a maximum voltage of 40V." So for my landing light circuit simply branch off one extra wire from the same spade as the circuit that goes to the landing light (+) and run this second wire to the (+) spade of the switch indicator light? > > I just received this from the dimmer manufacturer: "To clarify, the EPL1012 is a pulse width modulated power switch and not a rheostat. The switching takes place between the red wire and the black wire. The white wire supplies power to the switching circuit at around 300 Hz. Please note that there is no current limiting within the dimmer." > > Since the dimmer is essentially a variable voltage digital signal I am curious to see if it would work for the pin 25. I am hoping against hope because I already cut the hole in my panel for the dimmer...and I really like the looks of the little knob. I will ask Dynon. > > THANKS AGAIN!!!! > .. > > Cheers!!! > > Bill Hunter > > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of user9253 > Sent: Sunday, February 5, 2017 2:10 PM > To: aeroelectric-list@matronics.com > Subject: AeroElectric-List: Re: Single EPL101x Series Dimmer For Dynon Skyview Brightness a > > > Looking at the SkyView System Installation Guide Revision U, page 4-23 > > Pin 26 is negative, NOT positive. So connect pin 26 to the negative side of LEDs. The positive side of LEDs need to be connect to positive 12 VDC. > > Pin 25 expects a voltage, no current. Do NOT use that rheostat. Notice the rheostat directions state in red letters, "Connecting the Red and Black wires directly across 12 Volts will instantly burn out the Dimmer!" > > Use a 10K potentiometer or ask Dynon what value to use. I do not think it matters as long as the resistance is high enough to limit the current to a few milliamps. Connect the two outside POT terminals to GND and positive 12 volts. Connect the center terminal (wiper) to SkyView pin 25. > > Disclaimer: I have never wired a SkyView, just read the manual. > > -------- > Joe Gores


    Message 16


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    Time: 08:11:31 PM PST US
    Subject: Re: Single EPL101x Series Dimmer For Dynon Skyview
    Brightness a
    From: "user9253" <fransew@gmail.com>
    It seems that the EPL1012 and the SkyView work the same. They both pulse the negative supply. Connecting the EPL1012 directly to the SkyView DIM INPUT (Pin 25) is unlikely to work. But it might be possible to connect resistors and a capacitor between the output of the EPL1012 and pin 25 of the SkyView to smooth out the pulses. It would be a whole lot easier to use a potentiometer instead of the EPL1012 . Maybe one can be found to fit the hole that you drilled. What size hole is it? -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465825#465825




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