SMPS for Class A amp?

dw1narso · 6th October 2011, 05:28 AM

Good day,

I reckon, Class A amp power requirement will not as critical as class B/AB... (Is it a wrong thinking?)

Would it be acceptable to power Class A amp with SMPS power supply?

Thanks,
David

mickeymoose · 6th October 2011, 01:47 PM

Any amp can be powered with a SMPS. As with a standard supply, you need to have low a ripple and noise output. With the SMPS that stuff tends to be at higher frequenzy though (@200kHz). E

Th3 uN1Qu3 · 6th October 2011, 04:40 PM

By definition class A has zero PSU ripple rejection, so it'll have to be a really good SMPS. On the other hand the power supply is going to live an easier life because unlike class AB the load is fairly constant.

dw1narso · 6th October 2011, 05:02 PM

thanks Guys...

ah yes, I only think about the load and forget about the ripple...

6th October 2011, 05:28 AM	#1
dw1narso diyAudio Member Join Date: Mar 2004 Location: Jakarta	SMPS for Class A amp? Good day, I reckon, Class A amp power requirement will not as critical as class B/AB... (Is it a wrong thinking?) Would it be acceptable to power Class A amp with SMPS power supply? Thanks, David

6th October 2011, 04:40 PM	#3
Th3 uN1Qu3 diyAudio Member Join Date: Feb 2010 Location: Bucharest	By definition class A has zero PSU ripple rejection, so it'll have to be a really good SMPS. On the other hand the power supply is going to live an easier life because unlike class AB the load is fairly constant. __________________ "Audio grade" components simply means that they failed at a more critical job.

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6th October 2011, 01:47 PM	#2
mickeymoose diyAudio Member Join Date: Nov 2008	Any amp can be powered with a SMPS. As with a standard supply, you need to have low a ripple and noise output. With the SMPS that stuff tends to be at higher frequenzy though (@200kHz). E

6th October 2011, 05:02 PM	#4
dw1narso diyAudio Member Join Date: Mar 2004 Location: Jakarta	thanks Guys... ah yes, I only think about the load and forget about the ripple...

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