The Kuartlotron - keantoken's simple error-correction superbuffer - Page 53

Project16 · 2nd November 2015, 08:56 AM

Quote:

Originally Posted by thimios

Nice work!
Can you share the pcb and schematic for psu?
Can you share the pcb for buffer?

Hop!

thimios · 2nd November 2015, 09:46 AM

Quote:

Originally Posted by Project16

Hop!

Many many thanks!

jls001 · 6th November 2015, 07:28 PM

@Keantoken: I have a doubt about Vbe(Q4) and Veb(Q3). One left channel I measured Veb(Q4) = 0.6649, Veb(Q3) = 0.6017. So after calculating it becomes 60.0632. Similarly right channel is 60.0673. Is this the calculated value for R1 (=R2)?

keantoken · 6th November 2015, 08:31 PM

Yes, that is correct. Notice that is just a 7% difference from the original value of 56.

jls001 · 7th November 2015, 02:54 AM

Thanks!

I did the usual checks and adjustments (0.012 - 0.014 mV DC offset). This time there is absolutely no hum or hiss. I'll need some burn in as I'm experimenting with a thicker solid core internal wiring (20 gauge, Teflon insulation).

ammel68 · 9th November 2015, 04:35 PM

Quote:

Originally Posted by Project16

Hop!

Project, can you share the Sprint-Layout file for this power supply?

What style or brand of transformer fits on the board?

Thanks...

Project16 · 9th November 2015, 05:39 PM

Hello ammel68!

I used this transformer.
https://www.reichelt.de/Transformers...tnr&OFFSET=500

For the sprint layout file is importing gerber because originally the layout has been designed with DesignSpark.

ammel68 · 9th November 2015, 08:30 PM

Hello Project16,

Thank you for the zip file!

I'll have to search around and see if I can find a suitable transformer from Mouser or some other seller over here.

thimios · 21st November 2015, 11:14 AM

Another software based test.

keantoken · 21st November 2015, 11:55 AM

Can you list the exact parts you used? Is this before trimming?

6th November 2015, 08:31 PM	#524
keantoken diyAudio Member Join Date: Aug 2006 Location: Texas	Yes, that is correct. Notice that is just a 7% difference from the original value of 56. __________________ The Kmultiplier rail filter! -=- The Simple Kuartlotron Superbuffer! Need something built, repaired or modded? PM me and ask what I can do!

21st November 2015, 11:55 AM	#530
keantoken diyAudio Member Join Date: Aug 2006 Location: Texas	Can you list the exact parts you used? Is this before trimming? __________________ The Kmultiplier rail filter! -=- The Simple Kuartlotron Superbuffer! Need something built, repaired or modded? PM me and ask what I can do!

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6th November 2015, 07:28 PM	#523
jls001 diyAudio Member Join Date: Jan 2012 Location: Mumbai	@Keantoken: I have a doubt about Vbe(Q4) and Veb(Q3). One left channel I measured Veb(Q4) = 0.6649, Veb(Q3) = 0.6017. So after calculating it becomes 60.0632. Similarly right channel is 60.0673. Is this the calculated value for R1 (=R2)?

7th November 2015, 02:54 AM	#525
jls001 diyAudio Member Join Date: Jan 2012 Location: Mumbai	Thanks! I did the usual checks and adjustments (0.012 - 0.014 mV DC offset). This time there is absolutely no hum or hiss. I'll need some burn in as I'm experimenting with a thicker solid core internal wiring (20 gauge, Teflon insulation).

9th November 2015, 08:30 PM	#528
ammel68 Banned Join Date: Sep 2009 Location: Southeast, U.S.	Hello Project16, Thank you for the zip file! I'll have to search around and see if I can find a suitable transformer from Mouser or some other seller over here.