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Title: dual supply from ac adapter
Post by: noystoise on October 25, 2009, 06:14:02 AM

anyone know much about using a standard 12v ac adapter to obtain a symmetrical supply? ive found some info on google but i have virtually no experience with this stuff(rectifiers). does this look right? should i use 4001's or rectifier chips? any advice? (http://freecircuitdiagram.com/wp-content/uploads/2008/08/symmetric_supply.gif)

Title: Re: dual supply from ac adapter
Post by: Matt the Modulator on October 25, 2009, 07:10:24 PM

well i always turn to Ray willson for such matters

an adjustable voltage output type
http://www.musicfromouterspace.com/analogsynth/POWERSUPPLY2009/POWERSUPPLY2009.php (http://www.musicfromouterspace.com/analogsynth/POWERSUPPLY2009/POWERSUPPLY2009.php)

Wall Wart Power Supply (+/-9V to +/-15V)
http://www.musicfromouterspace.com/analogsynth/WALLWARTSUPPLY/WALLWARTSUPPLY.php (http://www.musicfromouterspace.com/analogsynth/WALLWARTSUPPLY/WALLWARTSUPPLY.php)

ray sells pcb's for both designs and gives the schematics so you can make your own
good luck

Title: Re: dual supply from ac adapter
Post by: nochtanseenspecht on October 26, 2009, 02:06:25 AM

i always rip them of abandoned dvd players, easiest solution :) and you have a +5v for bonus

Circuitbenders Forum

Circuitbenders Forum => Banter => Topic started by: noystoise on October 25, 2009, 06:14:02 AM