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Old 28th May 2009, 05:51 AM   #1
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Default Dx amplifier, builder's thread


Here i will post images to help builders.

If needed, more images will be added, depending people needs

The best support are Greg Erskine pages:

http://users.tpg.com.au/users/gerskine/dxamp/
Attached Images
File Type: jpg schematic.jpg (99.2 KB, 545 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 28th May 2009, 05:54 AM   #2
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Default Here you have the board layout.


attached,
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File Type: gif dx copper lines layout.gif (21.3 KB, 484 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 28th May 2009, 05:55 AM   #3
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Default Wanna board layout in pdf?


attached.
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File Type: pdf dx board layout.pdf (12.4 KB, 79 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 28th May 2009, 06:03 AM   #4
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Default Bias board detail


here
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File Type: gif bias board detail.gif (78.0 KB, 467 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 28th May 2009, 06:07 AM   #5
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Default The bias adjustment board - VBE multiplier circuit


in a real image.

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File Type: gif vbe multiplier connection.gif (79.3 KB, 452 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 28th May 2009, 06:10 AM   #6
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Default Parts position over the board


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File Type: gif partsposition.gif (81.6 KB, 471 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 28th May 2009, 06:11 AM   #7
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Default Connections and jumpers


attached
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File Type: gif connections and jumpers.gif (66.5 KB, 346 views)
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 28th May 2009, 06:15 AM   #8
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Default Boards populated


You do not see the off set trimpot, because in this board, it was substituted by a fixed resistance
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File Type: jpg boards populated.jpg (93.1 KB, 343 views)
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Old 28th May 2009, 06:23 AM   #9
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Default Here is the baby... assembled by Greg Erskine

The one have designed the boardClick the image to open in full size.
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Old 28th May 2009, 06:27 AM   #10
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Default Here you have twin boards, home made, by



Klaas Veenstra
Click the image to open in full size.
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