Building a symmetrical psu B1 buffer - Page 79

sutantoroy · 29th December 2009, 08:27 AM

Upgraded the supply caps from elna for audio 4700uF/45V into Silmic II 3300uF/50V. My transformator out is 15-CT-15.

Will it goes significant better when using 4700uF instead 3300uF?
Is it a good idea to paralleling the caps using MKP or oil caps with small value (under 1uF)?
I am using 1N5819 diode, Is it okay paralleling each diode with 1nF to make into a soft recovery diode?

Thanks

samoloko · 29th December 2009, 09:36 AM

or will It goes even better with 6800 or 10000 uF
I am thinking of buying 6800 /35 Panasonic TS-HA for a similar project - what do you think about that cap

Salas · 29th December 2009, 11:48 AM

Quote:

Originally Posted by sutantoroy

Upgraded the supply caps from elna for audio 4700uF/45V into Silmic II 3300uF/50V. My transformator out is 15-CT-15.

Will it goes significant better when using 4700uF instead 3300uF?
Is it a good idea to paralleling the caps using MKP or oil caps with small value (under 1uF)?
I am using 1N5819 diode, Is it okay paralleling each diode with 1nF to make into a soft recovery diode?

Thanks

Those are Schottky just 40V. Soft enough naturally. Stressed for reverse voltage with 2X15VAC Tx. Use 8, 2 in series for each side of the rectification bridge. Personally I don't prefer paralleling small caps around, but those are harmless experiments you can try, maybe you get lucky. The main filter caps value is adequate, look for quality mainly.

Salas · 29th December 2009, 11:48 AM

Quote:

Originally Posted by samoloko

or will It goes even better with 6800 or 10000 uF
I am thinking of buying 6800 /35 Panasonic TS-HA for a similar project - what do you think about that cap

Good cap.

billyk · 29th December 2009, 01:41 PM

Quote:

Originally Posted by Tea-Bag

It would have to be something knob based, lots of knobs.

jleaman · 29th December 2009, 03:49 PM

Quote:

Originally Posted by merlin2069er

Can anyone suggest a case for the dcb1?

What kinda case you looking for ?

samoloko · 29th December 2009, 04:46 PM

Quote:

Originally Posted by Salas

Good cap.

thx for your support

sutantoroy · 4th January 2010, 09:46 AM

Hi,

Is it safe changing:
* 34R 1W into 10R 1W
* 220R into 1K

Thanks

AndrewT · 4th January 2010, 10:53 AM

which schematic are you referring to?

sutantoroy · 4th January 2010, 02:30 PM

The shunt regulated, posting #10-12 schematic.

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29th December 2009, 08:27 AM	#781
sutantoroy diyAudio Member Join Date: Dec 2008	Upgraded the supply caps from elna for audio 4700uF/45V into Silmic II 3300uF/50V. My transformator out is 15-CT-15. Will it goes significant better when using 4700uF instead 3300uF? Is it a good idea to paralleling the caps using MKP or oil caps with small value (under 1uF)? I am using 1N5819 diode, Is it okay paralleling each diode with 1nF to make into a soft recovery diode? Thanks

29th December 2009, 09:36 AM	#782
samoloko diyAudio Member Join Date: Jun 2006	or will It goes even better with 6800 or 10000 uF I am thinking of buying 6800 /35 Panasonic TS-HA for a similar project - what do you think about that cap

4th January 2010, 09:46 AM	#788
sutantoroy diyAudio Member Join Date: Dec 2008	Hi, Is it safe changing: * 34R 1W into 10R 1W * 220R into 1K Thanks

4th January 2010, 10:53 AM	#789
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	which schematic are you referring to?

4th January 2010, 02:30 PM	#790
sutantoroy diyAudio Member Join Date: Dec 2008	The shunt regulated, posting #10-12 schematic.