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Old 2nd July 2014, 01:29 PM   #1271
AndrewT is offline AndrewT  Scotland
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Janusz,
post1267 .doc
where is the schematic that shows the components coding/numbers?
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Old 2nd July 2014, 07:56 PM   #1272
Pingrs is offline Pingrs  United Kingdom
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Quote:
Originally Posted by AndrewT View Post
Janusz,
post1267 .doc
where is the schematic that shows the components coding/numbers?
#1239
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Old 2nd July 2014, 11:24 PM   #1273
jdg123 is offline jdg123  United States
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kemicalx, you can assemble all you need by going to the DIYaudio store for the boards and casework then your favorite electronics site for the components from the BOM (or bill of materials). It's two-stop shopping instead of one; not bad at all!
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Old 3rd July 2014, 02:00 AM   #1274
janusz is offline janusz  Australia
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This is the upper part of the circuit. Values are just demonstration.

cheers,
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Old 3rd July 2014, 10:25 AM   #1275
AndrewT is offline AndrewT  Scotland
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The capacitor allows a different transient current limit, from the DC current limit.

A good IV protection system will allow all valid audio signals to pass into all valid audio loads.
If the IV system cannot meet that basic requirement, then it will be audible.

As a starter, look at what the limiting locus looks like when Vbe of the protection transistor is ~ 400mVbe, i.e. just turning on.
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Last edited by AndrewT; 3rd July 2014 at 10:27 AM.
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Old 3rd July 2014, 11:13 AM   #1276
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protection circuit installation you can see before and after
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Old 3rd July 2014, 11:14 AM   #1277
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!!!!!!!!! pictures are not in correct sequence ............
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