Comments on: Bipolar 9V Power Supply http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/ guitar stompboxes and electronics Thu, 09 Sep 2010 05:27:44 -0700 http://wordpress.org/?v=2.9.2 hourly 1 By: Chris Haughey http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/comment-page-1/#comment-1376 Chris Haughey Wed, 16 Jun 2010 14:25:50 +0000 http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/#comment-1376 Hi Paul, Just built this and it worked first time - result! Just one thing - I am getting about 1V differential between the + and - outputs. Th -9V is reading about 8V inother words. Any thoughts on why this might be and what I can do about it? Cheers, Chris Hi Paul,
Just built this and it worked first time – result! Just one thing – I am getting about 1V differential between the + and – outputs. Th -9V is reading about 8V inother words. Any thoughts on why this might be and what I can do about it?
Cheers,
Chris

]]> By: Dr Robb http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/comment-page-1/#comment-1359 Dr Robb Tue, 25 May 2010 15:53:29 +0000 http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/#comment-1359 Can we get a voltage doubling and muliplier circuits to get a single 9V to 18V and 24V for stompboxes?!?!?? Thanks in advance. Can we get a voltage doubling and muliplier circuits to get a single 9V to 18V and 24V for stompboxes?!?!?? Thanks in advance.

]]> By: IMF http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/comment-page-1/#comment-1332 IMF Sun, 25 Apr 2010 20:50:53 +0000 http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/#comment-1332 If I'm not mistaken the 1/4" jack is being used as a switch to disable power if nothing's plugged in. You don't need it if you're not using batteries. If I’m not mistaken the 1/4″ jack is being used as a switch to disable power if nothing’s plugged in. You don’t need it if you’re not using batteries.

]]> By: Brad http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/comment-page-1/#comment-1325 Brad Sat, 10 Apr 2010 14:19:55 +0000 http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/#comment-1325 I don't really understand what the purpose of the input jack is. it looks like a 1/4", but is it supposed to represent a dc jack? if so then what do you hook up to the +9v in? I don’t really understand what the purpose of the input jack is. it looks like a 1/4″, but is it supposed to represent a dc jack? if so then what do you hook up to the +9v in?

]]> By: Nick Dunkerley http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/comment-page-1/#comment-1324 Nick Dunkerley Thu, 08 Apr 2010 20:49:48 +0000 http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/#comment-1324 Will the ICL7660S work in this circuit in place of the MAX1044? Will the ICL7660S work in this circuit in place of the MAX1044?

]]> By: anon http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/comment-page-1/#comment-1198 anon Thu, 24 Sep 2009 00:47:17 +0000 http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/#comment-1198 u betcha bro, any 9v supply is fine. battery sag ain't special to this application. my 2c. u betcha bro, any 9v supply is fine. battery sag ain’t special to this application. my 2c.

]]> By: mjrippe http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/comment-page-1/#comment-1197 mjrippe Thu, 24 Sep 2009 00:42:20 +0000 http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/#comment-1197 I know this is an old post, but I'll try anyhow. First, does the +/- voltage sag as the battery wears down? Second, does this converter work with a 9v wall wart as the input? Maybe with a 9v regulator before the circuit? Thanks. I know this is an old post, but I’ll try anyhow. First, does the +/- voltage sag as the battery wears down? Second, does this converter work with a 9v wall wart as the input? Maybe with a 9v regulator before the circuit? Thanks.

]]> By: gaussmarkov http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/comment-page-1/#comment-132 gaussmarkov Tue, 13 Nov 2007 15:29:54 +0000 http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/#comment-132 I plan to make a PDF when everything is more complete. Thanks for the suggestion! I plan to make a PDF when everything is more complete. Thanks for the suggestion!

]]> By: Freedreamer http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/comment-page-1/#comment-96 Freedreamer Sun, 04 Nov 2007 11:13:09 +0000 http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/#comment-96 I understand now, thanks ;) really great site. You should put your articles (about caps, resistors and other lessons) on pdf for a better offline reading, is it possible? thanks 4 your work ;) I understand now, thanks ;)
really great site. You should put your articles (about caps, resistors and other lessons) on pdf for a better offline reading, is it possible?

thanks 4 your work ;)

]]> By: gaussmarkov http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/comment-page-1/#comment-95 gaussmarkov Sat, 03 Nov 2007 22:51:05 +0000 http://gaussmarkov.net/wordpress/circuits/bipolar-9v-power-supply/#comment-95 <p>Although the datasheet for the MAX1044 does not show one, I put that 220uF capacitor in for decoupling. It's "over engineering" I suppose. You can always omit it. ;-)</p> Although the datasheet for the MAX1044 does not show one, I put that 220uF capacitor in for decoupling. It’s “over engineering” I suppose. You can always omit it. ;-)

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