PSA: Chipamp.com snubberized PSU schematic with part numbers

Hogwild · 23rd October 2017, 09:01 PM

Hi everyone:

I've received so much help from you all on my Chipamp project, that I thought I'd make an (albeit small) contribution back. Here is a pic. of the Chipamp.com PSU with part numbers on top, as well as the LED power light indicator circuit and parts.

Hope this helps someone.

levistubby · 23rd October 2017, 09:13 PM

As has been pointed out in the past, the polarity of C6 is shown the wrong way round.

scottjoplin · 23rd October 2017, 09:44 PM

Actually, confusingly, it's the lower bridge that is reversed

Hogwild · 10:41 PM

scottjoplin:

I'm a total newbie with nearly zero electronics knowledge. If you would please clarify what you mean by that, I will try to fix the diagram.

scottjoplin · 23rd October 2017, 11:10 PM

Reverse D3,4,7&8

Hogwild · 23rd October 2017, 11:40 PM

scottjoplin:

Sorry, not clear. What do you mean by reverse? Do you mean swap label D3 with D8 and swap D7 with D4 or something completely different?

Nisbeth · 24th October 2017, 12:22 AM

Look at the two halves of the PSU - the same connections that give positive output on top give a negative output on the bottom

Leave C6 and the other components as they are, but connect the D3/D7-node to the negative side of C6 and the D4/D8-node to the positive side.

/U.

Hogwild · 24th October 2017, 05:25 AM

Nisbeth:

I can't really imagine in my mind exactly how that would look. Maybe someone else can change the diagram and re-post?

Mark Whitney · 24th October 2017, 08:51 AM

Current only flows in one direction through a diode. Some of the diodes are drawn the wrong way and need to be reversed. This schematic keeps popping up with the same response.

levistubby · 24th October 2017, 09:11 AM

The problem is only with the circuit diagram. The Chipamp power supply PCB is correct.

23rd October 2017, 10:37 PM	#4
Hogwild diyAudio Member Join Date: Oct 2010	scottjoplin: I'm a total newbie with nearly zero electronics knowledge. If you would please clarify what you mean by that, I will try to fix the diagram. Last edited by Hogwild; 23rd October 2017 at 10:41 PM.

24th October 2017, 12:22 AM	#7
Nisbeth diyAudio Member Join Date: Jan 2001 Location: Denmark	Look at the two halves of the PSU - the same connections that give positive output on top give a negative output on the bottom Leave C6 and the other components as they are, but connect the D3/D7-node to the negative side of C6 and the D4/D8-node to the positive side. /U. __________________ DIY projects blog

24th October 2017, 08:51 AM	#9
Mark Whitney diyAudio Member Join Date: Feb 2013 Location: Netherlands	Current only flows in one direction through a diode. Some of the diodes are drawn the wrong way and need to be reversed. This schematic keeps popping up with the same response. __________________ Regards Mark.

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23rd October 2017, 09:13 PM	#2
levistubby diyAudio Member Join Date: May 2011 Location: Hampshire coast UK	As has been pointed out in the past, the polarity of C6 is shown the wrong way round.

23rd October 2017, 09:44 PM	#3
scottjoplin diyAudio Member Join Date: Dec 2015 Location: Penrhyndeudraeth	Actually, confusingly, it's the lower bridge that is reversed

23rd October 2017, 11:10 PM	#5
scottjoplin diyAudio Member Join Date: Dec 2015 Location: Penrhyndeudraeth	Reverse D3,4,7&8

23rd October 2017, 11:40 PM	#6
Hogwild diyAudio Member Join Date: Oct 2010	scottjoplin: Sorry, not clear. What do you mean by reverse? Do you mean swap label D3 with D8 and swap D7 with D4 or something completely different?

24th October 2017, 05:25 AM	#8
Hogwild diyAudio Member Join Date: Oct 2010	Nisbeth: I can't really imagine in my mind exactly how that would look. Maybe someone else can change the diagram and re-post?

24th October 2017, 09:11 AM	#10
levistubby diyAudio Member Join Date: May 2011 Location: Hampshire coast UK	The problem is only with the circuit diagram. The Chipamp power supply PCB is correct.