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Group buy: SSR03 Super Regulator Power Supply Board
Group buy: SSR03 Super Regulator Power Supply Board
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Old 26th April 2018, 07:13 PM   #201
fred sonnen is offline fred sonnen  Germany
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Join Date: Dec 2014
I do short R2+4+10
X3 is 5V
R10=10V
installed load resistors
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Old 29th April 2018, 08:06 AM   #202
fred sonnen is offline fred sonnen  Germany
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Join Date: Dec 2014
exchanges the other side with the same results ;-)
Thank you!

But what is the price I do have to pay loosing R2-10?
A less stable PSU?
more Ripple?
?

just finished my first Project with one of your 18V to 15V psu: A analouge X-over for my DIY speakers
Click the image to open in full size.

Last edited by fred sonnen; 29th April 2018 at 08:31 AM.
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Old 1st May 2018, 12:03 PM   #203
peranders is offline peranders  Sweden
Electrons are yellow and more is better!
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Join Date: Apr 2002
Location: Göteborg, Sweden
Group buy: SSR03 Super Regulator Power Supply Board
The purpose of the resistors is to reduce harmonics on the raw voltage.
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/Per-Anders (my first name) or P-A as my friends call me.
SSR03 group buy. Sign up for interest HERE. 10 pcb's in order. 0 paid.
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Old 13th July 2018, 08:16 AM   #204
OlaW is offline OlaW
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Join Date: Jan 2016
Are boards still available. May I have 3 boards, and if possible with D44s and D45s.
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Old 13th July 2018, 08:39 AM   #205
peranders is offline peranders  Sweden
Electrons are yellow and more is better!
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Join Date: Apr 2002
Location: Göteborg, Sweden
Group buy: SSR03 Super Regulator Power Supply Board
Send me an email and tell me where you live (shipping cost).
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/Per-Anders (my first name) or P-A as my friends call me.
SSR03 group buy. Sign up for interest HERE. 10 pcb's in order. 0 paid.
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Old 7th August 2018, 09:20 AM   #206
peranders is offline peranders  Sweden
Electrons are yellow and more is better!
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Join Date: Apr 2002
Location: Göteborg, Sweden
Group buy: SSR03 Super Regulator Power Supply Board
This forth group buy is closed but I'm checking interest for a fifth round.

New thread here.
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/Per-Anders (my first name) or P-A as my friends call me.
SSR03 group buy. Sign up for interest HERE. 10 pcb's in order. 0 paid.

Last edited by peranders; 7th August 2018 at 09:26 AM.
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Old 29th August 2018, 07:49 PM   #207
kjb is offline kjb  Sweden
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Join Date: Sep 2003
Location: Sweden
Hi! I accidentally killed one of the caps, 100uF 50V (I put it the wrong way). So I took whatever I could find, a 220uf 50V and put it in place of c60 (on the output). Can that affect performance badly, make it oscillating or something? Is it better to use a smaller cap, I also found a 47uf laying around.
I can measure noise 4,7mV p-p on the negative output(where the wrong value cap is placed). Is that the cause?
I'm planning to exchange that cap for the correct value next time I order some components anyhow, but its good to know.
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Old 30th August 2018, 04:06 AM   #208
peranders is offline peranders  Sweden
Electrons are yellow and more is better!
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Join Date: Apr 2002
Location: Göteborg, Sweden
Group buy: SSR03 Super Regulator Power Supply Board
It will probably work with either value but if I had to pick one I would have taken 47 uF, How did you measure the noise? The result is 1000 times more than expected. Expected value is a few microvolts only.
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/Per-Anders (my first name) or P-A as my friends call me.
SSR03 group buy. Sign up for interest HERE. 10 pcb's in order. 0 paid.
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Old 30th August 2018, 02:13 PM   #209
kjb is offline kjb  Sweden
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Join Date: Sep 2003
Location: Sweden
I usead a cheap usb osilloscope to measure, so it may not be reliable. It has a function showing p-p voltage when measuring. However the positive voltage measured 0 uV p-p. So something must be wrong somewhere with the negative side.
I will try with another cap to start with.
Can a cap get damaged without being visually destroyed. I did manage to put two of them the wrong direction, one blew up (c42) almost instantly. The other I had at the c60 position, and it seemed to survive. So I removed the bad one(c42) and put the one that survived at c42. And choose a 220uF at c60 (just guessed that the value of c60 would be less critical). So maybe I should chenge both of them for new ones?
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Old 30th August 2018, 02:24 PM   #210
peranders is offline peranders  Sweden
Electrons are yellow and more is better!
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Join Date: Apr 2002
Location: Göteborg, Sweden
Group buy: SSR03 Super Regulator Power Supply Board
In case your oscilloscope shows "nothing" on the positive and something on the negative it can be a sign of noise but check your measurement setup carefully. Something could be damaged or a bad soldering joint. If your oscilloscope can handle 1 or 10 mV/div then you may have a problem.
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SSR03 group buy. Sign up for interest HERE. 10 pcb's in order. 0 paid.
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