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Audio Isolation Amplifier Boards

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nuckollsr

Joined: 24 Mar 2009
Posts: 95
Location: Medicine Lodge, KS

Posted: Sat Nov 26, 2016 9:35 am Post subject: Audio Isolation Amplifier Boards

I've had some requests for the bare etched circuit board called out in the DIY amplifier project featured at http://tinyurl.com/hn28p2q



Unfortunately, there is a minimum quantity for fabricating these. If I could sell three more boards at $25 each postage paid, I would be wiling to bring another batch of these in house.



This was probably the most successful DIY project on the AeroElectric website. I think we sold about 80 of those boards over the years.



Bob . . .

art(at)zemon.name
Guest

Posted: Sat Nov 26, 2016 1:11 pm Post subject: Audio Isolation Amplifier Boards

I'm dim. What is an Audio Isolation Amplifier used for? Which is oblique way of asking, do I need one for my plane?

Â  Â  -- Art Z.



-- 

https://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

ceengland7(at)gmail.com
Guest

Posted: Sat Nov 26, 2016 2:58 pm Post subject: Audio Isolation Amplifier Boards

On 11/26/2016 12:58 PM, Art Zemon       wrote:

     

      	  Quote: 	
		                  I'm dim. What is an Audio Isolation           Amplifier used for? Which is oblique way of asking, do I need           one for my plane?

         

         

         Â  Â  -- Art Z.           

           

           -- 

                                                        https://CheerfulCurmudgeon.com/                                      "If                     I am not for myself, who is for me? And if I am only                     for myself, what am I? And if not now, when?" Hillel

                 

               

             

           

         

       

     	
     Hi Art,

     

     They can have two potential uses. If you open the .pdf file from     Bob's link, you'll see multiple sources listed that feed into one     destination. This is 'summing' function, that allows combining     multiple audio sources while maintaining isolation of the sources     from each other. (If you just tie them all together, some or all may     not be able to maintain a high enough level and/or have a clean     signal. Like tying too many speakers in parallel to your stereo, or     worse, tying the left and right outputs together.) With the     isolation amp, you hear them all, but they don't interfere with each     other.

     

     The second potential function (not implemented with the components     shown, but possible), is to supply 'gain', or amplification. Some     signal sources may not be loud enough to match up with other     sources, or you may need more volume in a loud cockpit than your     radios or intercom can supply. With a few tweaks to the circuit, it     could supply amplification, as well. (Verify with Bob that he's ok     with doing this in this particular circuit.)

     

     Charlie

cluros(at)gmail.com
Guest

Posted: Sat Nov 26, 2016 6:20 pm Post subject: Audio Isolation Amplifier Boards

I was wondering the same thing so I had a look at the .pdf. As far as I can tell it's a budget way of tying in several radios to your intercom without spending thousands on an audio panel. 



Sebastien



On Nov 26, 2016, at 13:58, Art Zemon <art(at)zemon.name (art(at)zemon.name)> wrote:

 	  Quote: 	
		  I'm dim. What is an Audio Isolation Amplifier used for? Which is oblique way of asking, do I need one for my plane?

    -- Art Z.



-- 

https://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

email(at)jaredyates.com
Guest

Posted: Sat Nov 26, 2016 7:52 pm Post subject: Audio Isolation Amplifier Boards

I use it to consolidate music, vhf nav audio, and dynon audio output into the single intercom input. 



On Nov 26, 2016, at 21:18, Sebastien <cluros(at)gmail.com (cluros(at)gmail.com)> wrote:

 	  Quote: 	
		  I was wondering the same thing so I had a look at the .pdf. As far as I can tell it's a budget way of tying in several radios to your intercom without spending thousands on an audio panel. 



Sebastien



On Nov 26, 2016, at 13:58, Art Zemon <art(at)zemon.name (art(at)zemon.name)> wrote:

 	  Quote: 	
		  I'm dim. What is an Audio Isolation Amplifier used for? Which is oblique way of asking, do I need one for my plane?

    -- Art Z.



-- 

https://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

merlewagner2

Joined: 01 Jun 2016
Posts: 18
Location: Spring Hill, FL

Posted: Sun Nov 27, 2016 3:58 am Post subject: Re: Audio Isolation Amplifier Boards

Bob, you can sign me up for 2 boards.



Merle

_________________
KC1DNJ
General Radiotelephone
Commercial SEL
A & P
Building scale P51, rebuilding Tailwind W10

Eric M. Jones

Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts

Posted: Sun Nov 27, 2016 7:40 am Post subject: Re: Audio Isolation Amplifier Boards

Bob,



Did you mean bare (not etched) circuit boards?



If so, a trip to you local PCB fab house will get you a truckload of boards in various thicknesses and single-double side configurations. Free.



Eric

_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net

rnjcurtis(at)charter.net
Guest

Posted: Sun Nov 27, 2016 8:58 am Post subject: Audio Isolation Amplifier Boards

Sent from Mail for Windows 10

From: Eric M. Jones (emjones(at)charter.net)

Sent: Sunday, November 27, 2016 10:43 AM

To: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)

Subject: AeroElectric-List: Re: Audio Isolation Amplifier Boards

--> AeroElectric-List message posted by: "Eric M. Jones" <emjones(at)charter.net>

Bob,

Did you mean bare (not etched) circuit boards?

He meant bare boards with no holes or copper. 

Â You drill your own holes mount the components, 

and run wires to complete the circuits.

Be real Eric!Â  You know exactly what Bob meant

Quit trying to stir the pot!

Roger

If so, a trip to you local PCB fab house will get you a truckload of boards in various thicknesses and single-double side configurations.

Eric

--------

Eric M. Jones

www.PerihelionDesign.com

113 Brentwood Drive

Southbridge, MA 01550

(508) 764-2072

emjones(at)charter.net

David Lewis

Joined: 27 Nov 2016
Posts: 3

Posted: Sun Nov 27, 2016 12:56 pm Post subject: Re: Audio Isolation Amplifier Boards

Bob . . . I would be interested in purchasing two of these boards as well. Should I go to the web site to place the order or is there a specific email you want us to use for the request?



David Lewis

Burbank, CA

davidlewisstart(at)gmail.com

nuckolls.bob(at)aeroelect
Guest

Posted: Mon Nov 28, 2016 9:13 am Post subject: Audio Isolation Amplifier Boards

At 09:40 AM 11/27/2016, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "Eric M. Jones" <emjones(at)charter.net>



 Bob,



 Did you mean bare (not etched) circuit boards?



 If so, a trip to you local PCB fab house will get you a truckload of boards in various thicknesses and single-double side configurations.



 Eric 	


  No, our 9009-300-2A etched circuit board is

  a component of the DIY audio isolation

  amplifier project described in . . .



  http://tinyurl.com/ngoo6hc



 

  [img]cid:7.1.0.9.0.20161128110438.05579d20(at)aeroelectric.com.0[/img]  



 Perhaps the better term is 'unpopulated'.  It looks

 like this when you're done.



 [img]cid:7.1.0.9.0.20161128110438.05579d20(at)aeroelectric.com.1[/img] 



 



 

 

   Bob . . .

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nuckolls.bob(at)aeroelect
Guest

Posted: Mon Nov 28, 2016 9:15 am Post subject: Audio Isolation Amplifier Boards

At 08:18 PM 11/26/2016, you wrote:

  	  Quote: 	
		  I was wondering the same thing so I had a look at the .pdf. As far as I can tell it's a budget way of tying in several radios to your intercom without spending thousands on an audio panel. 	




   Correct. Notice too on the pictures that

   there are gain setting resistors installed

   in a socket. For audio sources with no

   adjustable output, you can select the

   resistor that levels that source with

   the rest of your sources.



 

 

   Bob . . .

nuckolls.bob(at)aeroelect
Guest

Posted: Thu Dec 08, 2016 5:55 pm Post subject: Audio Isolation Amplifier Boards

I've had a number of folks express and interst in

 acquiring the boards to the DIY audio Isolation

 amplifier.



 Interested purchases can be made from our

 website at:



  http://tinyurl.com/cgr42l5



 Put your order details in the Commends/Special Rquests

 box at the bottom of the form. The boards are $22 ea

 plus first class postage of $2.25



 I'll plan on ordering boards on Monday . . .



 

 Assembly instructions for this project are available

 at:



  http://tinyurl.com/ngoo6hc



 

  [img]cid:7.1.0.9.0.20161208145544.068ddb70(at)aeroelectric.com.2[/img]   



 Perhaps the better term is 'unpopulated'.  It looks

 like this when you're done.



 [img]cid:7.1.0.9.0.20161208145544.068ddb70(at)aeroelectric.com.3[/img]  



 



 

 

   Bob . . .[url=??.htm] [/url]



 No virus found in this message.

 Checked by AVG - www.avg.com

 11/27/16

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nuckolls.bob(at)aeroelect
Guest

Posted: Sun Dec 11, 2016 8:53 pm Post subject: Audio Isolation Amplifier Boards

--> AeroElectric-List message posted by: "nuckollsr" <bob.nuckolls(at)aeroelectric.com>



 I've had some requests for the bare etched circuit board called out in the DIY amplifier project featured at  http://tinyurl.com/hn28p2q



 Unfortunately, there is a minimum quantity for fabricating these. If I could sell three more boards at $25 each postage paid, I would be wiling to bring another batch of these in house.



 This was probably the most successful DIY project on the AeroElectric website. I think we sold about 80 of those boards over the years.



 



    I've placed an order for the boards based

    on requests received to date. The boards

    are ordered in lots of 6. From the 2

    lots just ordered I'll have 4 residual

    boards available.



 

 

   Bob . . .

nuckolls.bob(at)aeroelect
Guest

Posted: Sat Dec 17, 2016 5:44 am Post subject: Audio Isolation Amplifier Boards

At 10:47 PM 12/11/2016, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "nuckollsr" <bob.nuckolls(at)aeroelectric.com>



 I've had some requests for the bare etched circuit board called out in the DIY amplifier project featured at  http://tinyurl.com/hn28p2q

 	


   All boards requested have been shipped and

   I'm out of boards.



 

 

   Bob . . .

donvansanten(at)gmail.com
Guest

Posted: Fri Dec 30, 2016 6:33 pm Post subject: Audio Isolation Amplifier Boards

Bob,



Just noticed this. Would this be a good way to connect an xm roady music receiver to my audio panel? 



Background, The roady has no volume control and is intended to plug into a cassette player using the supplied adapter. I wired it directly to my Garmin audio panel. It worked fine except The volume was lower than needed. I am changing to a PS Engineering PDA 360XR audio panel that has music input volume controls. I am not sure that the new install will have adequate volume.Â  Any ideas on how to increase the volume?

On Thu, Dec 8, 2016 at 1:00 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

 	  Quote: 	
		    I've had a number of folks express and interst in

 acquiring the boards to the DIY audio Isolation

 amplifier.



 Interested purchases can be made from our

 website at:



  http://tinyurl.com/cgr42l5



 Put your order details in the Commends/Special Rquests

 box at the bottom of the form. The boards are $22 ea

 plus first class postage of $2.25



 I'll plan on ordering boards on Monday . . .



 

 Assembly instructions for this project are available

 at:



  http://tinyurl.com/ngoo6hc



 

  [img]cid:7.1.0.9.0.20161208145544.068ddb70(at)aeroelectric.com.2[/img] Â  



 Perhaps the better term is 'unpopulated'.Â  It looks

 like this when you're done.



 [img]cid:7.1.0.9.0.20161208145544.068ddb70(at)aeroelectric.com.3[/img] Â 



 



 

 

 Â  Bob . . . 



 No virus found in this message.

 Checked by AVG - www.avg.com

 11/27/16



 

 

  



 Â  Bob . . .

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donvansanten(at)gmail.com
Guest

Posted: Fri Dec 30, 2016 6:43 pm Post subject: Audio Isolation Amplifier Boards

Bob,



Just noticed this. Would this be a good way to connect an xm roady music receiver to my audio panel? 



Background,  The roady has no volume control and is intended to plug into a cassette  player using the supplied adapter. I wired it directly to my Garmin  audio panel. It worked fine except The volume was lower than needed. I  am changing to a PS Engineering PDA 360XR audio panel that has music  input volume controls. I am not sure that the new install will have  adequate volume.Â  Any ideas on how to increase the volume?



On Fri, Dec 30, 2016 at 6:32 PM, don van santen <donvansanten(at)gmail.com (donvansanten(at)gmail.com)> wrote:

 	  Quote: 	
		  Bob,



Just noticed this. Would this be a good way to connect an xm roady music receiver to my audio panel? 



Background, The roady has no volume control and is intended to plug into a cassette player using the supplied adapter. I wired it directly to my Garmin audio panel. It worked fine except The volume was lower than needed. I am changing to a PS Engineering PDA 360XR audio panel that has music input volume controls. I am not sure that the new install will have adequate volume.Â  Any ideas on how to increase the volume?

On Thu, Dec 8, 2016 at 1:00 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

 	  Quote: 	
		    I've had a number of folks express and interst in

 acquiring the boards to the DIY audio Isolation

 amplifier.



 Interested purchases can be made from our

 website at:



  http://tinyurl.com/cgr42l5



 Put your order details in the Commends/Special Rquests

 box at the bottom of the form. The boards are $22 ea

 plus first class postage of $2.25



 I'll plan on ordering boards on Monday . . .



 

 Assembly instructions for this project are available

 at:



  http://tinyurl.com/ngoo6hc



 

  [img]cid:7.1.0.9.0.20161208145544.068ddb70(at)aeroelectric.com.2[/img] Â  



 Perhaps the better term is 'unpopulated'.Â  It looks

 like this when you're done.



 [img]cid:7.1.0.9.0.20161208145544.068ddb70(at)aeroelectric.com.3[/img] Â 



 



 

 

 Â  Bob . . . 



 No virus found in this message.

 Checked by AVG - www.avg.com

 11/27/16



 

 

  



 Â  Bob . . .

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