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Old 27th October 2008, 07:11 PM   #41
massimo is offline massimo  Italy
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Hi Choky!
Maybe a silly question (but pls no silly answer!) or maybe already asked you too many times, but where can we buy the pcbs as seen in post 32?
I'm mainly interested on a couple of the shunt reg pcb.
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Old 27th October 2008, 07:44 PM   #42
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Quote:
Originally posted by massimo
Hi Choky!
Maybe a silly question (but pls no silly answer!) or maybe already asked you too many times, but where can we buy the pcbs as seen in post 32?
I'm mainly interested on a couple of the shunt reg pcb.

well - I'm not responsible for pcbs ( I am just for back of napkin sketch of circ ) , but you can ask bogdan_borko for that ;

dunno - seems that zei is working on split version ( Shinyy , in my hysteric nomenclature ) ; you can look in digital , Papa's D1 pcbs thread .....
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Old 28th October 2008, 07:23 PM   #43
GuidoR is offline GuidoR  Italy
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Hi all,
In case somebody agrees, here's the artwork of the Shinyy ( not yet tested!!!).

Guido

Massimo, in the next days I'll etch my sample: do you need one, too?
e-mail me

Guido
Attached Files
File Type: pdf shinyy.pdf (60.4 KB, 252 views)
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Old 28th October 2008, 07:27 PM   #44
GuidoR is offline GuidoR  Italy
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The files (Express PCB)
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File Type: zip shinyy pcb.zip (91.9 KB, 160 views)
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Old 28th October 2008, 10:05 PM   #45
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by GuidoR
Hi all,
In case somebody agrees, here's the artwork of the Shinyy ( not yet tested!!!).

Guido

Massimo, in the next days I'll etch my sample: do you need one, too?
e-mail me

Guido

Quote:
Originally posted by GuidoR
The files (Express PCB)



btw - express pcb file is Isnogood for any other proggie
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Old 29th October 2008, 01:37 AM   #46
massimo is offline massimo  Italy
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Quote:
Originally posted by GuidoR
Hi all,
In case somebody agrees, here's the artwork of the Shinyy ( not yet tested!!!).

Guido

Massimo, in the next days I'll etch my sample: do you need one, too?
e-mail me

Guido
Thank you for your offer, Guido.
No, I need a dual mono p.s. (2 x Shiny), not a dual p.s. (Shinyy).
I'm now working on my own pcb.
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Old 30th November 2009, 09:55 PM   #47
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Alors,

I built a shunty for the B1 but it won't turn on.

I hooked the circuit up to 42VDC and it draws like 60mA.
The section with the LM317s seems fine and puts out 27V.
But the voltage at the gate of the IRF510 won't rise above 5.7V. I replaced the FET. The one pulled from the circuit looks fine so it's likely that this wasn't the problem.
Could the BC546B be the cause?

(the darlington in the sim is not the actual one, it's a BDX53C)

The second channel I build won't turn on either, so I must have made the same mistake twice, hopefully.

Maybe someone can give me a hint.

Thanks guys!
Attached Images
File Type: jpg shunty_b1.jpg (158.9 KB, 283 views)
File Type: jpg shunty_bottom2.jpg (195.8 KB, 274 views)
File Type: jpg shunty_top.jpg (596.7 KB, 264 views)
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Old 30th November 2009, 11:41 PM   #48
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally Posted by Rodeodave View Post
Alors,

I built a shunty for the B1 but it won't turn on.

I hooked the circuit up to 42VDC and it draws like 60mA.
The section with the LM317s seems fine and puts out 27V.
But the voltage at the gate of the IRF510 won't rise above 5.7V. I replaced the FET. The one pulled from the circuit looks fine so it's likely that this wasn't the problem.
Could the BC546B be the cause?

(the darlington in the sim is not the actual one, it's a BDX53C)

The second channel I build won't turn on either, so I must have made the same mistake twice, hopefully.

Maybe someone can give me a hint.

Thanks guys!

circuit can't draw more than 0V65/R9

disconnect everything after CCS , then connect output of CCS via mA-meter to gnd and check current ;

on schematic everything looks good to me ; culprit must be somewhere in your actual implementation ;

did you checked twice orientation of parts , especially BDX ?

it's
Attached Images
File Type: gif bdx53.GIF (9.4 KB, 236 views)
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Last edited by Zen Mod; 30th November 2009 at 11:46 PM.
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Old 1st December 2009, 09:41 PM   #49
hates ground loops
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Thanks a lot, choky, I think I'm on to something. I disconnected everything after the CSS and checked what current it would push through a DMM to ground. It's around 50mA, just as expected. Unloaded it puts out some 25V, haven't checked the voltage with a load, but will do tomorrow.
So the error must be in the shunt-regulator part. I'll check all polarities and keep you posted. Hope I see them LEDs actually emit someday.

Thanks a lot!
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Old 1st December 2009, 11:30 PM   #50
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Quote:
Originally Posted by Rodeodave View Post
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Mighty ZM .......... here , to Serve and Protect !!

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