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Old 12th March 2012, 07:08 PM   #1
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Default +/-35V and +/-12V power supply

Hi I need a schematic for a +/-35V and +/-12V power supply, for my class D amp. (need 35V for MOSFETs and 12V for comparator and few other ICs). If you can include a component list that would be great. thank you!
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Old 12th March 2012, 09:57 PM   #2
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i have next to zero knowledge, so forgive me if i'm barking up the wrong tree, but this smps comes in a -/+36V (5-10% variable) version, don't know if there's enough info or even if it's clear enough...http://www.connexelectronic.com/documents/SMPS300R.pdf

(EDIT: page 3 of the pdf)

Last edited by reg66; 12th March 2012 at 10:11 PM.
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Old 12th March 2012, 10:25 PM   #3
Minion is offline Minion  Canada
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Quote:
Originally Posted by mastercarbit View Post
Hi I need a schematic for a +/-35V and +/-12V power supply, for my class D amp. (need 35V for MOSFETs and 12V for comparator and few other ICs). If you can include a component list that would be great. thank you!
Linear or SMPS ??
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Old 12th March 2012, 10:48 PM   #4
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oh, and forgot to mention my previous post smps has around 12V @ 0.25A auxillary (needs regulating for sensitive applications, currently at around 10% value)
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Old 13th March 2012, 07:37 PM   #5
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dont really know what the difference is and i need something simpler than what reg66 posted
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Old 13th March 2012, 08:18 PM   #6
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Quote:
Originally Posted by Minion View Post
Linear or SMPS ??
dont really know what the difference is and i need something simpler than what reg66 posted
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Old 14th March 2012, 02:18 PM   #7
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transformer sec. of 2x26V + 2x9V, 2-4 rectifiers and some caps.
that vil be +/-35V and +/-12V
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Old 14th March 2012, 02:34 PM   #8
DF96 is offline DF96  England
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If you really don't know the difference between SMPS and linear supplies than I suggest you buy rather than make a supply. PSUs always raise two issues for newbies: safety and grounding. We don't want to lose forum members, and you don't want to listen to hum.
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