Group Buy: SSR03 Super Regulator Power Supply

[42001]

FYI

I bought two boards from the first buy. The first one was done with the LM431 and the other one is just finished with the LM329.

They both perform really good! But the LM329 is just a bit cleaner.

 

[Wungun]

LM329 15V BOM...
Line 25 says wire jumper...
But part number specifies a 1k resistor.
Can you clarify please...

 

[peranders]

Please check the schematics and the now updated BOM. Should be a wire jumper.

 

[Wungun]

Thanks PA...

The zeners for DZ1 and DZ2...
I want to mount LED's but on the board, polarity isn't indicated...
I've also gone thru the schematics but can find this location...?

 

[peranders]

You have to look a bit closer... 🙂 The polarity is also indicated. C and A stands for Cathode and Anode for the zener and the plus sign is for the LED. You can also compare this in the schematic.

 

[Wungun]

Thanks again...
My board doesn't have the c or a on it...but now I see the + and -
I thought the line on the + might of been the blocking line on a diode schematic...

Have to wait for a few parts to show up still, but it's 95% finished. Exciting!!

 

[peranders]

Please look at the assembly drawing.

 

[OldMike2]

Per Anders,
I'm waiting for my SSR03 boards to arrive but have been looking to source the components. What would you recommend for the obsolete BC546C/BC556C. What would be the lowest Hfe and frequency transition you would recommend for a +/-15volt board with AD825 and LM431

 

[peranders]

You can use BC560C/550C or some other "B" type.

 

[peranders]

Just wondering, everyone has got their pcb's?

 

[OldMike2]

Thanks Peranders,

I can source the BC550C/560C from Digikey.


I think my boards are held up by Canadian customs and christmas mail rush. I'll let you know when they arrive.

Mike

 

[OldMike2]

Boards were in my mail box today, Jan 1 2014. Excellent quality, thank you, now for some fun.

Best wishes for the new year

 

[OldMike2]

Peranders
Do you have a recommended grounding layout for the boards? e.g. Star ground or ? , best location on the board to take to star ground if used?

Mike

 

[peranders]

The pcb have a couple of ground connections so the star ground be there but it depends what you are up to.

 

[OldMike2]

Hi Peraneders,

I'm putting 2 boards in one cabinet and would like to go with a star ground.

One board will be powering 2 Linkwitz LX521 ASP's and the other board will be powering an additional LX521 ASP plus another 2 ASP's for sub woofers. I run balanced interconnects in and out of the ASP's but wish to minimize any potential ground loops by using a star ground arrangement with the 2 SSR03 boards.

Regards
Mike

 

[peranders]

If you have two transformers and two pcb's it's pretty easy, hard to get ground loops.

 

[OldMike2]

Thank you Peranders
I have 2 transformers so will just wire as is most convenient.

Mike

 

[OldMike2]

Peranders,
SSR03 up and running powering my ASP's for Linkwitz LX521 ASP's and subwoofer ASP's. Only problem was a "bad" resistor value from digikey, labeled as 56Kohm, actual 3.8Kohm, changed out for correct value and everything OK.

Sound is definitely cleaner versus the simple 78xx circuits I had before.

Thank you

 

[peranders]

Well done! I'm glad that you have succeeded.

 

[casshan]

Hi Peranders, could you tell me how to change components to output +-35V?

Thanks!