0r68 3Watt MF resistors for sale in UK? - Page 2 - diyAudio
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Old 20th September 2012, 01:21 PM   #11
doolav is offline doolav  United Kingdom
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That's for F5 r1 amp
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Old 20th September 2012, 01:26 PM   #12
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then just use wirewound. there is just power. no signal
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Old 20th September 2012, 01:32 PM   #13
doolav is offline doolav  United Kingdom
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but this is for the output fets, not for PSU. Is not it supposed to be non inductive (i.e. non wirewound)?
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Old 20th September 2012, 01:38 PM   #14
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i use wirewound my self on F5 for the source resistors. thats no problem.
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Old 20th September 2012, 01:47 PM   #15
doolav is offline doolav  United Kingdom
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ok, thanks. What do you use (for what version of F5)?
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Old 20th September 2012, 01:50 PM   #16
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i use some vishay's and it is a standar F5 with 30% higher bias. and dual outputs
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Old 20th September 2012, 01:55 PM   #17
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and you don't need to use dual resistor pr fet a single 5W will get the job done.
f.ex a single 0R4 insted of 2 0R68 wich is 0R34.
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Old 20th September 2012, 02:02 PM   #18
doolav is offline doolav  United Kingdom
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if schematic refers to 2 x 0R68, 3Watt each, then should not the single substitution be at least 6Watt? (sorry about such dummy questions, I am a kind of at the beginning of these things, so just try to follow whatever guidance I have as close as I can)
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Old 20th September 2012, 02:14 PM   #19
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5W will do fine it of course depends on the bias. at 1A pr fet and 0R4 you are looking at 2.5W

Last edited by AudioSan; 20th September 2012 at 02:21 PM.
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