Chip Amp Photo Gallery - Page 133

davidhugo · 18th January 2010, 09:34 AM

Hi There
Your amp looks great. I am glad it sounds good as well. May I ask you a couple of questions as I am about to construct a Peter Daniel chip amp.

The 2 black ceramic caps which I presume are there to cut down switching on clicks? What value and voltage have you used?

Secondly the red caps shown on underside of the rectifier board are they Snubbers? Again what value have you used?

I would greatly appreciate this info before I start I want to completely try to understand what I am doing.
Many Thanks

dh

udailey · 18th January 2010, 12:49 PM

DH
Who are you talking to?
I dont see black ceramics on any recent pics but caps under a rectifier board would be snubbers and most likely if red they are Wima film caps of .1uf.
Voltage for any caps should be a minimum of 25% higher than the max voltage they will see. DC voltage will be 1.4 times higher than the AC voltage from the transformers secondaries.
Uriah

davidhugo · 18th January 2010, 05:14 PM

Quote:

Originally Posted by lanchile

Hello I just add more juice to my integrated chip-amp.I had two "extra" Mundorf caps. so Now it has 20000uf per channel.The sound is wonderful.

Hi There.

Your amp looks great. I am glad it sounds good as well.

May I ask you a couple of questions as I am about to construct a Peter Daniel chip amp.

The 2 black Capacitors connected across the mains input terminal strips which I presume are there to cut down switching on clicks? What value and voltage have you used?

Secondly the red caps shown on underside of the rectifier board are they Snubbers? Again what value have you used?

I would greatly appreciate this info before I start I want to completely try to understand what I am doing.
Many Thanks

dh

davidhugo · 18th January 2010, 05:16 PM

Quote:

Originally Posted by udailey

DH
Who are you talking to?

Hi I was trying to address lanchile;202963 but thanks for replying anyway

I dont see black ceramics on any recent pics but caps under a rectifier board would be snubbers and most likely if red they are Wima film caps of .1uf.
Voltage for any caps should be a minimum of 25% higher than the max voltage they will see. DC voltage will be 1.4 times higher than the AC voltage from the transformers secondaries.
Uriah

Wardsweb · 19th January 2010, 03:01 AM

Here is a little something I put together over the weekend - LM3886

troystg · 19th January 2010, 03:09 AM

Nice case. Where'd you get it?

Side note: The slots appear to be contradictory in the pictures unless the bottom and top slots are off set.

Wardsweb · 19th January 2010, 03:48 AM

Quote:

Originally Posted by troystg

Nice case. Where'd you get it?

Side note: The slots appear to be contradictory in the pictures unless the bottom and top slots are off set.

I bought the case (ATI-738U) from ATI Research back in 2007. It has been sitting on a shelf, so I decided to use it for this little weekend project.

The slot difference is an optical illusion. Top and bottom have center slots.

Wardsweb · 19th January 2010, 04:00 AM

Here is a picture of my old LM3875TF amp I did back around 2006. Acrylic, aluminum with heat pipes.

MJL21193 · 19th January 2010, 04:14 AM

Quote:

Originally Posted by Wardsweb

...with heat pipes.

Nice work!

Those "heat pipes" are pieces of hot water radiators.
Cool none the less.

Wardsweb · 19th January 2010, 04:46 AM

Quote:

Originally Posted by MJL21193

Nice work!

Those "heat pipes" are pieces of hot water radiators.
Cool none the less.

I had no clue. I saw Peter Daniel use some years ago and liked the look. I got these off Ebay. The pig tweak add some bottom end to the music.

18th January 2010, 09:34 AM	#1321
davidhugo diyAudio Member Join Date: Mar 2009	Hi There Your amp looks great. I am glad it sounds good as well. May I ask you a couple of questions as I am about to construct a Peter Daniel chip amp. The 2 black ceramic caps which I presume are there to cut down switching on clicks? What value and voltage have you used? Secondly the red caps shown on underside of the rectifier board are they Snubbers? Again what value have you used? I would greatly appreciate this info before I start I want to completely try to understand what I am doing. Many Thanks dh __________________ Power corrupts but powerlessness destroys you absolutely.

18th January 2010, 12:49 PM	#1322
udailey Passive Aggressive diyAudio Member Join Date: Mar 2008	DH Who are you talking to? I dont see black ceramics on any recent pics but caps under a rectifier board would be snubbers and most likely if red they are Wima film caps of .1uf. Voltage for any caps should be a minimum of 25% higher than the max voltage they will see. DC voltage will be 1.4 times higher than the AC voltage from the transformers secondaries. Uriah __________________ You can purchase LDRs anytime to build a standard LDR attenuator or to build my new LDR Attenuator "A Lighter Note". Email me. diyldr@gmail.com

19th January 2010, 03:09 AM	#1326
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Nice case. Where'd you get it? Side note: The slots appear to be contradictory in the pictures unless the bottom and top slots are off set. __________________ Troy Thinking positive doesn't make things better, it makes you a better person.

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19th January 2010, 03:01 AM	#1325
Wardsweb diyAudio Member Join Date: Feb 2003 Location: San Antonio, Texas	Here is a little something I put together over the weekend - LM3886

19th January 2010, 04:00 AM	#1328
Wardsweb diyAudio Member Join Date: Feb 2003 Location: San Antonio, Texas	Here is a picture of my old LM3875TF amp I did back around 2006. Acrylic, aluminum with heat pipes.