Hi Apex,Nice work, but C4 is 1uF/50V
Regards
For C1, C8, C9, C10, C11 it is also 50V or higher?
if we use max +/-75VDC, what is the minimum allowed(safe) for these caps rating?
Hi Reski,
well done
PCB size please?
Mine also has been changed(not tested yet), now its look more symmetric
Regards
Hi Reski,
well done
PCB size please?
Mine also has been changed(not tested yet), now its look more symmetric
Regards
Hi Bli John,ukuran pcbnya 172x70 mm...
I have modified the layout for dc servo.I uploaded this to share with, however this board has not been tested so be aware and try to review my work.goodluck and enjoy
regards,
drowranger
Nice work,
Regards
this is what i do in office...
regards,
joel
Hi Joel, can you share software for pcb layout.
regards
Here is a demo version, Demo versions you can not use "save,copy,cut" options in it but you can mark the surface that you want to save and use the "past" option in corel draw or other software in order to save it in a pdf,jpg or else. I use it when i need some simplier schematic or a pcb drawing.
120W/8R with +/-60V, minimum rail voltage +/-35V, 30-50mA per pair of outputs is minimum bias or 150-200mA in rail.
Regards
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That means the output voltage is 30Vrms !!
where remaining 12v has gone?
why that much voltage is wasted in this amplifier?
Regards
Jacob
Yes, I have some amps, both single output pair and dual output pair, that can do 110W into 8r0 from quiescent supply rails sitting @ +-50.5Vdc
the truth is, all these talk about power ratings on paper is meaningless until an actual power testing can be done using a signal generator, a scope and 8ohm power resistor or dummy loads or a distortion meter....
WHY?
because we really do not know the quality of the power transformer you are using.....we can spec it but the actual dc resistances of the windings we do not know.....
open loaded rails sag big under load...
the Pioneer Spec2 rated at 200wpc into 8ohms has an unloaded rails of 92volts, at full power, rails sag to 71volts.....
WHY?
because we really do not know the quality of the power transformer you are using.....we can spec it but the actual dc resistances of the windings we do not know.....
open loaded rails sag big under load...
the Pioneer Spec2 rated at 200wpc into 8ohms has an unloaded rails of 92volts, at full power, rails sag to 71volts.....
to reach specification output of 56Vpk they start with quiescent supply rails @ ~+-90Vdc and when under full power they sag to +-71Vdc. That's a lost 34Volts.
That is such abominable performance that I would be asking for my money back because the amp is not fit for purpose.