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#1 |
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diyAudio Member
Join Date: Jun 2004
Location: XH
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(My english is BAD.)
From LM359(Norton OP AMP) PDF,I design this power AMP. 1.It use all NPN type tranistror. 2.The THD is low and even harmonious much more than odd harmonious. At Vout=4Vrms( 8ohm 1Khz) THD=0.1% and even harmonious(2KHz) is -43dB,odd harmonious(3KHz) is -67dB. 3.I think it is a CFB amp. |
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#2 |
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diyAudio Member
Join Date: Dec 2005
Location: the north
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locky_z
Good circuit ![]() Norton is interesting. We can get VERY FAST amplifiers like this. I attach the LM359 circuit diagram.
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#3 |
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diyAudio Member
Join Date: Dec 2005
Location: the north
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To overcome Lower Input impedance of Norton
we can use JFET Differential Input stage.
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