Compact Shuntreg
Several members have PM me regarding the Cetoole’s (Colin Toole) shuntreg with interest to get or do PCB’s for this circuit, therefore it seems that we have sufficient interest for a GB (maybe small… who knows).
Let me get you up to speed on the development of the Compact layout first.
Since a couple of weeks Steen, Colin, Manu and myself have been working on a new Compact layout that has ended on, what I think, is a very nice design measuring 63 x 39mm (2.49 x 1.53”). The schematic has change a bit as I said before, R9 is gone.
Some of the highlights of the new layout can be summarized as follows:
- C2 is now 2X 4.7uf box type. Footprint is based on Wima MKS2’s with 50 / 63V rating.
- C1 and C3 are now shown as box type, footprint based on Wima FKP2 rating 63 or 100V. Option on leadspace is 5 and 7.5mm (10mm was a close call so left it out).
- Now, a trimpot for the voltage divider is VR15 which replaces R15, this allows easy voltage setting.
- All three power transistor are on one side suitable for chassis heatsink (no fixed HS onboard) alternatively you could use “flying” HS’s or alu bar for the purpose.
- R6 is now only a 1W resistor.
Manu have been working on Gerber files but recent changes of the layout have stop that development and he has been quite busy with day work lately.
Leadership for a GB is needed so if someone feels fit for the task just say so.
We have to thank Colin for its great contributions on this project giving tips on the layout and component selection.
This is the last iteration on the Compact (simplified) layout…
🙂
Several members have PM me regarding the Cetoole’s (Colin Toole) shuntreg with interest to get or do PCB’s for this circuit, therefore it seems that we have sufficient interest for a GB (maybe small… who knows).
Let me get you up to speed on the development of the Compact layout first.
Since a couple of weeks Steen, Colin, Manu and myself have been working on a new Compact layout that has ended on, what I think, is a very nice design measuring 63 x 39mm (2.49 x 1.53”). The schematic has change a bit as I said before, R9 is gone.
Some of the highlights of the new layout can be summarized as follows:
- C2 is now 2X 4.7uf box type. Footprint is based on Wima MKS2’s with 50 / 63V rating.
- C1 and C3 are now shown as box type, footprint based on Wima FKP2 rating 63 or 100V. Option on leadspace is 5 and 7.5mm (10mm was a close call so left it out).
- Now, a trimpot for the voltage divider is VR15 which replaces R15, this allows easy voltage setting.
- All three power transistor are on one side suitable for chassis heatsink (no fixed HS onboard) alternatively you could use “flying” HS’s or alu bar for the purpose.
- R6 is now only a 1W resistor.
Manu have been working on Gerber files but recent changes of the layout have stop that development and he has been quite busy with day work lately.
Leadership for a GB is needed so if someone feels fit for the task just say so.
We have to thank Colin for its great contributions on this project giving tips on the layout and component selection.
This is the last iteration on the Compact (simplified) layout…
🙂
Tony, very nice work on that pdf🙂
I hope someone will volunteer to run a GB. I imagine that a lot of DIY'ers can use a compact flexible and high performance shuntreg board like this. If someone does, a new thread should be made in the marketplace, GB department.
Just a note on R6, which can probably be of a little higher value for NS10/B1 use, now that R9 is deleted. 22r to 25r would be able to source the needed current, if someone wanted to run the Q's a little cooler.
🙂
I hope someone will volunteer to run a GB. I imagine that a lot of DIY'ers can use a compact flexible and high performance shuntreg board like this. If someone does, a new thread should be made in the marketplace, GB department.
Just a note on R6, which can probably be of a little higher value for NS10/B1 use, now that R9 is deleted. 22r to 25r would be able to source the needed current, if someone wanted to run the Q's a little cooler.
🙂
Hi Tony
very nice compact layout. good job!
if anyone is willing to run a gb for it, I'll more than happy to join the party 😀
Vale
very nice compact layout. good job!
if anyone is willing to run a gb for it, I'll more than happy to join the party 😀
Vale
Hi boyz and girls...!
I should be able to post my copy of this splendid last layout (congrats Tony and Colin, once more
) later this evening/night/morning ... (after having concluded last Business obladioblada of silly week... 😀 )
Still the question of upper GR-plane stays open , though: so what should we do? GRD Plane with connection to ground at - pin of C4? OK?
Or iznogood...?
Advices are welcome...
Then Gerbers should be available mucho Hippa Hippa!
Manu 😉
I should be able to post my copy of this splendid last layout (congrats Tony and Colin, once more
) later this evening/night/morning ... (after having concluded last Business obladioblada of silly week... 😀 )Still the question of upper GR-plane stays open , though: so what should we do? GRD Plane with connection to ground at - pin of C4? OK?
Or iznogood...?
Advices are welcome...
Then Gerbers should be available mucho Hippa Hippa!
Manu 😉
Hi Tony&Colin&Steen (three is the perfect number 😀 )!
How much can be the maximum output voltage for the Toole shunt?
I'm curious to try it with GRollins SSTART (50V).
How is the math for the main parameters?
Congrats for the very interesting job you made
.
Guido
How much can be the maximum output voltage for the Toole shunt?
I'm curious to try it with GRollins SSTART (50V).
How is the math for the main parameters?
Congrats for the very interesting job you made
.Guido
If you want to take a look at this :
(with Upside GRD-plane, possibly connected to grd at J-grd)
Manu
(with Upside GRD-plane, possibly connected to grd at J-grd)
An externally hosted image should be here but it was not working when we last tested it.
Manu
Manu,
Excellent and nice work. Looking great.
Not much to say but some suggestions if I may:
On VR15 you may want to turn it 180° so the central pad would be at grd level.
The third pad for C4 could be eliminated since there is no space for a bigger cap there, otherwise fine as it is.
Some questions: what footprint for C! and C3? Width for traces between power tranies and general low current traces and also for the grd track?
I think you can connect the grd plane anywere you want, were it is, is fine for me.
Cheers,
😎
Excellent and nice work. Looking great.
Not much to say but some suggestions if I may:
On VR15 you may want to turn it 180° so the central pad would be at grd level.
The third pad for C4 could be eliminated since there is no space for a bigger cap there, otherwise fine as it is.
Some questions: what footprint for C! and C3? Width for traces between power tranies and general low current traces and also for the grd track?
I think you can connect the grd plane anywere you want, were it is, is fine for me.
Cheers,
😎
Dennis Hui said:
Dennis,
Thanks for your offer good to have you around, things are moving forward now with Manu also working on the Gerber’s.
I think we should wait a couple of days and see what developments we have and hear if anyone have other suggestions for the PCB's.
Cheers,
😎
apassgear said:
Attached corrected version
It could be a good idea to test the board before going gerber/GB
In the meantime I will re-check footprint, pin size etc...
Cheers
Manu
An externally hosted image should be here but it was not working when we last tested it.
Hi Manu,
That looks really good!
I do have one question: Will a standoff for the hole size
touch any of the tracks?
Cheers,
Dennis
That looks really good!
I do have one question: Will a standoff for the hole size
touch any of the tracks?
Cheers,
Dennis
Zen ... this time not my fault 
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