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24th November 2006, 02:32 PM
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#1 |
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diyAudio Member
Join Date: Nov 2005
Location: serbia, zajecar
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JLH (my version)
Hi!
Impressed by the sound of the original (BJT `69 JLH amplifier) I decided to experiment a bit and this is my "enchased" version of a JLH amp. simulation results THD=0.002% Power on 4 Ohm (32W) Power on 8 Ohm (16W) OUtput mosfets bias (2A) This is the PCB I made and becouse I got very little expirience in developing PCB-s, I hope you`ll hel me debug the PCB layout... When all is done, PCB file and complete tutorial for making this amp will be attached for the interested DIY-ers. Cheers! Bogdan. |
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24th November 2006, 02:34 PM
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#2 |
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diyAudio Member
Join Date: Nov 2005
Location: serbia, zajecar
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pcb
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24th November 2006, 10:54 PM
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#4 |
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diyAudio Member
Join Date: Dec 2005
Location: the north
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JLH Class A - IRFP240 Vertical MOSFET
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Looks like a good nice DIY amplifier. Using IRFP240 vertical MOSFET, HEXFET. Push-Pull. Single Supply. Pure Class A. How much bias you have across 0.22 Ohm resistors? If simulations data are somewhat right then you have a real good HiFi amp there! 
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lineup |
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25th November 2006, 08:58 AM
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#5 |
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diyAudio Member
Join Date: Nov 2005
Location: serbia, zajecar
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bias is set to 2A.
the amp is wired now (point to point) and the sound is very, very good! I just need advide on PCB. Is there some "big" errors? I have no much expirience... |
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