GB for DC coupled B1 buffer with shunt PSUs - Page 11 - diyAudio
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Old 10th July 2009, 05:45 PM   #101
Salas is offline Salas  Greece
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Quote:
Originally posted by xaudiox
ygpm salas.. thanks
I sent em 2u.
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Old 10th July 2009, 05:53 PM   #102
Salas is offline Salas  Greece
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Quote:
Originally posted by samoloko
Is It possible to redraw the layout so the backs of the mosfets are outside - that would make complete shunt reg and B1 - so there will be more Interest
There is a reason he put the Mosfets that way. To keep the gate stoppers at minimum distance. That circuit is LED fix V referenced and optimized for that current range. From there you are on your own. It is not meant by me for general scalable regulator use. There is a dedicated regulator thread with discussion and recommended board that can be configured for positive or negative.
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Old 10th July 2009, 06:40 PM   #103
massimo is offline massimo  Italy
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Quote:
Originally posted by xaudiox
i can try redo the layout in protel.. i'm also thinking if we can have the board with scoring line in between the b1 and the regulator.. so anyone can use the regulator by itself.
Protel: very professional! Scoring: good idea Maybe panelize two pcb with scoring line. Nearly everybody is asking for 2 pcs at least.

Quote:
Originally posted by samoloko
Is It possible to redraw the layout so the backs of the mosfets are outside - that would make complete shunt reg and B1 - so there will be more Interest
Yes, nice, but in this way you have symmetrical tracks

Quote:
Originally posted by Ryssen

Sounds fine,can you make 2 more mounting holes for the PSU?
Mandatory!

More ideas:
> Reduce a bit the size of the 2 caps in // to the led strings and keep 'emt close to the leds. It's only a 100 uF/16V elcap!
> Don't use too many hole diameters: 0.8 mm for resistors, leds, caps and TO92 devices, 1 mm for Mosfets, AC connector, diodes and mounting holes. Too many different diameters make the pcb more expensive, while it's quite easy to enlarge holes in a single sided pcb (without metallized holes)
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Old 10th July 2009, 07:49 PM   #104
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Please change my order from 1 to 2 boards.

Thanks!
Bill
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Old 10th July 2009, 08:50 PM   #105
back is offline back  Greece
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i would like 4 boards please.
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Old 10th July 2009, 10:44 PM   #106
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i would like 2 boards...thank you!!
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Old 11th July 2009, 12:18 AM   #107
Ryssen is offline Ryssen  Sweden
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123 boards..
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Regards Åke
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Old 11th July 2009, 12:34 AM   #108
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I am in for two boards. Thanks for the great work. James
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Old 11th July 2009, 01:01 PM   #109
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Default B1 plus shunt boards

Hi,

I'd like to be in for 2 boards. Thank you.

Ernst
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Old 11th July 2009, 01:19 PM   #110
HDGR is offline HDGR  Greece
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I would like 2 boards please.
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