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Old 3rd November 2011, 02:59 AM   #121
MrSlim is offline MrSlim  Canada
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Quote:
Originally Posted by nigelwright7557 View Post
Be careful what you do with the 12 volts to the 2092. It can be a bit touchy about decoupling close to the regulator and close to the 2092.
I didnt decouple mine well enough and I started getting clicking through the audio.
Turned out to be glitches on the VCC 12 volt rail.
Actually, I was just talking about how to modify a speaker protection board to use 12V DC vs 12VAC, not the L15D itself..
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Old 3rd November 2011, 05:59 PM   #122
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MrSlim,

Thanks, but that sounds more involved than wiring up the amp modules

I'll just spend a few bucks more and get Cristi's.
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Old 3rd November 2011, 06:02 PM   #123
Cyan is offline Cyan  Italy
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The jlm ones seem to me boards for the experts. Connexelectronic's ones are more user friendly. They even have boards at 150w at 4 ohm, without the need to change components as is required for the l15d to run at lower voltage and power.
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Old 9th November 2011, 02:57 PM   #124
ljm_ljm is offline ljm_ljm  China
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A friend asked me to help him make a connection diagram plus protection.

I paste to come over.
Attached Images
File Type: jpg L20D带保护连接图..jpg (183.2 KB, 1074 views)
File Type: jpg DSCN4122.jpg (314.9 KB, 1035 views)
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Old 9th November 2011, 03:06 PM   #125
Cyan is offline Cyan  Italy
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Quote:
Originally Posted by ljm_ljm View Post
A friend asked me to help him make a connection diagram plus protection.

I paste to come over.
I suddenly feel the urge to buy it...
Is that a speaker protection circuit? How much does it all cost, shipping included, without potentiometer?
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Old 2nd December 2011, 04:36 PM   #126
Bearman is offline Bearman  United States
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ljm_ljm, a 50k input pot on the L15D?
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Old 3rd December 2011, 01:44 AM   #127
ljm_ljm is offline ljm_ljm  China
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Quote:
Originally Posted by Bearman View Post
ljm_ljm, a 50k input pot on the L15D?
No problem
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Old 7th December 2011, 12:54 AM   #128
MrSlim is offline MrSlim  Canada
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ljm_ljm, I know your L15D and L20D are based on the IR reference design, but looking at the boards, is it correct to conclude that you did not include the over/under voltage protection circuitry(page 31 of the Reference Design document) in your designs? I don't see it in the board layout.

Last edited by MrSlim; 7th December 2011 at 01:04 AM.
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Old 7th December 2011, 12:57 AM   #129
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The 2092 can be a bit touchy about over voltage on its inputs and can go into protect mode if you go above +/-5 volts in.
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Old 7th December 2011, 01:01 AM   #130
MrSlim is offline MrSlim  Canada
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The over/under voltage protection I'm talking about in the International Rectifier 2092 Reference design is for the power supply voltages, not the input voltage..
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