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Old 23rd September 2002, 03:08 AM   #1
CryingDragon
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Question Are These Wattage Ratings Right?

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Old 23rd September 2002, 03:14 AM   #2
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Default Re: Are These Wattage Ratings Right?

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Originally posted by CryingDragon
???
Look fine to me. If anything, some verge a bit toward overkill (the 10 watter in the output network for example). But no one ever smoked a resistor because it could handle too much power.

se
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Old 23rd September 2002, 03:21 AM   #3
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Thanks
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Old 23rd September 2002, 04:07 AM   #4
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The output network resistor can be 3W.
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Old 23rd September 2002, 04:14 AM   #5
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So aside from the output network are most of them the right size (or in toher words as small as they can safely be) because i wana use as close to the right value as possable but i don't wana go too low.
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Old 23rd September 2002, 04:45 AM   #6
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I don't know about this particular circuit, but usually if the resistor is not used to reduce the voltage, 0.25 or 0.5 W is enough. Anyway, if you notice that it gets too hot you can always replace it with a bigger one.
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Old 23rd September 2002, 04:56 AM   #7
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ok thanks for the info.
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Old 23rd September 2002, 08:28 AM   #8
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The feedback resistors (1k2 and 56k) can be 0.25W or 0.6 W metal film.
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Old 24th September 2002, 02:43 AM   #9
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The 4R7 output resistor only needs to be big if you are going to run full power 20 kHz sinewaves on the bench, or maybe for some non-audio application. For normal music a 1 watt should be just fine, use carbon not wirewound which are sometimes inductive and would therefore defeat the purpose.

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Old 24th September 2002, 06:48 AM   #10
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For this particular resistor you can also use a couple of 0.6 W metal film, 2-4 pcs. Easier if you have a couple of 22-47 ohms.
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