power supply for 10m45s

mctavish · 13th July 2010, 02:31 PM

I am finishing a point to point SimpleSE build and I noticed there is no smoothing cap after the 10k that supply's the 10m45. I am not well versed in silicon so I ask; Is this cap not needed in this implementation? Is there no voltage swing over the resistor because the current drawn is constant? Will the addition of a cap make life easier/harder on the 10m45? Thanks for the assistance of a sand novice!

kmtang · 13th July 2010, 03:40 PM

Hi mctavish,

Do you mind posting the schematic? It is much easier to understand your question.

Thanks,
Johnny

kmtang · 13th July 2010, 03:45 PM

I believe you are talking about the TubeLab's Simple SE amp.

The 10K resistor works like a protection for the 10M45 CCS that does not require bypass capacitor at all. The dynamic resistance of the 10M45 that provides excellent power noise rejection.

Johnny

kevinkr · 13th July 2010, 04:28 PM

Quote:

Originally Posted by kmtang

I believe you are talking about the TubeLab's Simple SE amp.

The 10K resistor works like a protection for the 10M45 CCS that does not require bypass capacitor at all. The dynamic resistance of the 10M45 that provides excellent power noise rejection.

Johnny

Not having looked at the schematic I suspect the resistor is there primarily to reduce dissipation in the 10M45..

mctavish · 13th July 2010, 05:24 PM

Thanks for the replies. Yes, the amp is Tubelabs simplese. I am doing a p2p version.

nic6paul · 13th July 2010, 05:30 PM

Mctavish if you get a chance throw up some photos of yours, especially of the point to point work.

13th July 2010, 02:31 PM	#1
mctavish diyAudio Member Join Date: Feb 2008 Location: Niederösterreich	power supply for 10m45s I am finishing a point to point SimpleSE build and I noticed there is no smoothing cap after the 10k that supply's the 10m45. I am not well versed in silicon so I ask; Is this cap not needed in this implementation? Is there no voltage swing over the resistor because the current drawn is constant? Will the addition of a cap make life easier/harder on the 10m45? Thanks for the assistance of a sand novice!

13th July 2010, 05:30 PM	#6
nic6paul diyAudio Member Join Date: Jan 2007 Location: Minnesota	Mctavish if you get a chance throw up some photos of yours, especially of the point to point work. __________________ - Nic

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13th July 2010, 03:40 PM	#2
kmtang diyAudio Member Join Date: Nov 2004 Location: Vancouver	Hi mctavish, Do you mind posting the schematic? It is much easier to understand your question. Thanks, Johnny

13th July 2010, 03:45 PM	#3
kmtang diyAudio Member Join Date: Nov 2004 Location: Vancouver	I believe you are talking about the TubeLab's Simple SE amp. The 10K resistor works like a protection for the 10M45 CCS that does not require bypass capacitor at all. The dynamic resistance of the 10M45 that provides excellent power noise rejection. Johnny

13th July 2010, 05:24 PM	#5
mctavish diyAudio Member Join Date: Feb 2008 Location: Niederösterreich	Thanks for the replies. Yes, the amp is Tubelabs simplese. I am doing a p2p version.

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