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Old 1st February 2012, 09:18 AM   #441
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+/-15VDC can be used for a preamplifier,cooling fan or something else,and it is the output from 7815/7915 that is supplied from 2x18VAC. 2x18VAC is the only power supply that comes into the protection circuite. +/-15VDC comes out from the protection circuite and it is result from stabilising voltage after the bridge rectifier.
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Old 1st February 2012, 11:19 AM   #442
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Quote:
Originally Posted by 44250 View Post
+/-15VDC can be used for a preamplifier,cooling fan or something else,and it is the output from 7815/7915 that is supplied from 2x18VAC. 2x18VAC is the only power supply that comes into the protection circuite. +/-15VDC comes out from the protection circuite and it is result from stabilising voltage after the bridge rectifier.
can you make some drawing, how to connect protect to Amp, I had read about stereo protect in this forum, don't remember where.
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Old 1st February 2012, 12:23 PM   #443
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Quote:
Originally Posted by viki_v2 View Post
can you make some drawing, how to connect protect to Amp, I had read about stereo protect in this forum, don't remember where.
Attached Images
File Type: jpg APEX PA Protect Stereo.jpg (493.7 KB, 1037 views)
File Type: jpg APEX PA Protect Stereo layout.jpg (496.5 KB, 927 views)
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File Type: txt tekst.txt (508 Bytes, 107 views)
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Old 1st February 2012, 12:27 PM   #444
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That in upper post was for stereo,and this is for mono-one channel:
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File Type: jpg APEX H900 Protect Component layout.jpg (664.6 KB, 813 views)
File Type: jpg APEX PA PROTECT.jpg (226.1 KB, 695 views)
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File Type: txt New Text Document.txt (908 Bytes, 76 views)
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Old 1st February 2012, 07:35 PM   #445
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What value volume control potentiometer for sr200
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Old 1st February 2012, 09:03 PM   #446
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Quote:
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What value volume control potentiometer for sr200
5-10k
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Old 2nd February 2012, 05:14 AM   #447
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5-10k
Mile sir, Kindly check drawing if I am correct.
For Mono protect the relay 24v 16A is it different from relay for Stereo protect having 24v 2x10a.
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File Type: jpg Protect stereo for forum.jpg (819.3 KB, 779 views)
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Old 2nd February 2012, 09:35 AM   #448
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regarding Sr200 if I use MJL21193 and MJL21194- 2SC5200 Will be replaced BY 21194 and 2SA1943 Will be replaced By MJL21193- Is this correct
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Old 3rd February 2012, 10:46 AM   #449
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regarding Sr200 if I use MJL21193 and MJL21194- 2SC5200 Will be replaced BY 21194 and 2SA1943 Will be replaced By MJL21193- Is this correct
Replace pnp with pnp(2sa1943/mjl21193,and npn with npn(2sc5200/mjl21194). Simple as that...
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Old 3rd February 2012, 06:56 PM   #450
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Hi mile, I'm building SR200 for replacement of amp modules of my old yamaha ca2010.

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