A quasi-comp all N-channel Hexfet design. It has a bias transistor on the heatsink, so it's probably class AB. The 63V caps suggest it should run at about ±57V or so, maybe 300W/4R.
Not a good pcb, an electrolyt may explode. Not good design, it has huge drop voltages that means it lost much power rating and getting very hot. 14dBgain for high open loop gain will affect in high damping factor, it will not satisfy your ear for long time listening.
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hi nazirdigi
this is quasi nmos350 workin on +-70 vols.this is nmos200 pcb modified by me.
forgot to raise the caps voltages.you can find the schematic and pcb on quasis site.
Nmos350 / 500 - Quasi's DIY Audio Site
regards
ravs
be a vegeterian.......
this is quasi nmos350 workin on +-70 vols.this is nmos200 pcb modified by me.
forgot to raise the caps voltages.you can find the schematic and pcb on quasis site.
Nmos350 / 500 - Quasi's DIY Audio Site
regards
ravs
be a vegeterian.......
http://sites.google.com/site/quasisdiyaudiosite/Nnmos350-500schematic.pdf?attredirects=0
T7 would benefit from a resistor in the range of 330R in series with the base. This resistor prevents the voltage reference (D1, D2) from collapsing when T7 saturates during a negative clip, improving the recovery time (see any Pass amplifier schematic with a similar front-end).
I would also consider using gate zeners if driving a 2R load.
T7 would benefit from a resistor in the range of 330R in series with the base. This resistor prevents the voltage reference (D1, D2) from collapsing when T7 saturates during a negative clip, improving the recovery time (see any Pass amplifier schematic with a similar front-end).
I would also consider using gate zeners if driving a 2R load.
Hi Ravs
My life is so busy man and I have little time for DIY. Even so I recently helped a friend build a set of AOS transmission line speakers (very nice) and I have begun to build an Nmos350 Mk2.5 (not yet published) as well as some other small electronics projects (non-audio).
I am also trying to landscape our garden, raise 2 sons, keep a happy wife and a hectic job.
How's life with you man?
Cheers
Q
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