Is Mooly's Amp Safe To Build?

Jay · 18th June 2010, 11:26 PM

Okay, I haven't built the amp. And I have had and is having a very high hope on this amplifier. But every time I see the output stage... I look at another circuit.

So I don't want to miss good opportunities just because of misconception about the safety of an amp. So I want somebody to help me clarify (with technical explanation) the following two issues/mythos:

1) When output capacitance (Co) of a mosfet is lower than its input capacitance (Ci) it will be beneficial to have a configuration where the output signal is taken from the drain so as to minimize total/effective capacitance. But...

2) I'm scared of P-channel transistor on the positive supply.

AKSA · 18th June 2010, 11:30 PM

Yes, Jay, emphatically. Build it, you will be astonished.

Hugh

Jay · 19th June 2010, 12:04 AM

Hehe thanks Hugh. Tho I cannot build amplifiers, I think when I can build one I will know what to do to get a good sounding one. I have seen many experts with many amplifiers (of course you're not included

) but honestly to my limited knowledge they don't look like understand what makes a good sounding amp, just curves

Mooly · 21st June 2010, 05:14 PM

Thanks for the thumbs up Hugh

18th June 2010, 11:26 PM	#1
Jay diyAudio Member Join Date: Feb 2003 Location: Jakarta	Is Mooly's Amp Safe To Build? Okay, I haven't built the amp. And I have had and is having a very high hope on this amplifier. But every time I see the output stage... I look at another circuit. So I don't want to miss good opportunities just because of misconception about the safety of an amp. So I want somebody to help me clarify (with technical explanation) the following two issues/mythos: 1) When output capacitance (Co) of a mosfet is lower than its input capacitance (Ci) it will be beneficial to have a configuration where the output signal is taken from the drain so as to minimize total/effective capacitance. But... 2) I'm scared of P-channel transistor on the positive supply.

18th June 2010, 11:30 PM	#2
AKSA diyAudio Member Join Date: Sep 2001 Location: Melbourne, Australia	Yes, Jay, emphatically. Build it, you will be astonished. Hugh __________________ Aspen Amplifiers P/L (Australia) www.aksaonline.com

21st June 2010, 05:14 PM	#4
Mooly diyAudio Member Join Date: Sep 2007	Thanks for the thumbs up Hugh __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

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19th June 2010, 12:04 AM	#3
Jay diyAudio Member Join Date: Feb 2003 Location: Jakarta	Hehe thanks Hugh. Tho I cannot build amplifiers, I think when I can build one I will know what to do to get a good sounding one. I have seen many experts with many amplifiers (of course you're not included ) but honestly to my limited knowledge they don't look like understand what makes a good sounding amp, just curves

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