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Class D Switching Power Amplifiers and Power D/A conversion

Silicon chip magazine class d power amplifier
Silicon chip magazine class d power amplifier
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Old 3rd December 2017, 08:06 PM   #1
jamesfeline is offline jamesfeline  United Kingdom
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Default Silicon chip magazine class d power amplifier

Hello

I have the full kit kicking around my workshop, so decided to make the amplifier before I start losing some of the parts

the PCB'S are nicely made, good quality components .. so decided to make a couple of monoblock test beds .. just to evaluate the sound quality, plus I already had the kits so would be a stock budget build.
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Old 3rd December 2017, 08:09 PM   #2
jamesfeline is offline jamesfeline  United Kingdom
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so ... just a few pics before the build
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File Type: jpg IMG_0408[1].jpg (902.3 KB, 244 views)
File Type: jpg IMG_0409[1].jpg (470.4 KB, 226 views)
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Old 3rd December 2017, 08:12 PM   #3
jamesfeline is offline jamesfeline  United Kingdom
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few more pics of the parts bin
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Old 3rd December 2017, 08:14 PM   #4
jamesfeline is offline jamesfeline  United Kingdom
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few more pics
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Old 3rd December 2017, 08:16 PM   #5
jamesfeline is offline jamesfeline  United Kingdom
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ok ... just trying to bring all the parts together

so this is what I am making
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Old 3rd December 2017, 08:27 PM   #6
jamesfeline is offline jamesfeline  United Kingdom
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ok .. so tonight I made one of the protection modules .. the only thing that I changed was that I used small terminal blocks instead of the push connection fittings for the signal connections that would make the trip in a fault condition
Pictures of the fully built protection module
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Old 3rd December 2017, 08:36 PM   #7
jamesfeline is offline jamesfeline  United Kingdom
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some final pictures of the protection module
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Old 3rd December 2017, 08:38 PM   #8
jamesfeline is offline jamesfeline  United Kingdom
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some more final pictures of the 1st protection module .. I will be using 50 +/- supply DC rails
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File Type: jpg IMG_0419.jpg (413.8 KB, 50 views)
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Old 4th December 2017, 04:35 PM   #9
doctormord is offline doctormord  Germany
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Nice build.
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Old 7th December 2017, 07:29 AM   #10
Puffin is offline Puffin  United Kingdom
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I have made several projects featured in Everyday PE and Elektor and have been surprised at the eventual cost. I suppose it is the blessing/curse of ebay where built up boards and those in nice enclosures can be a fraction of the cost. It is sometimes though a case of you get what you pay for. Will be interested to hear what you think of them.
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