DerWaschbar Posted August 30, 2014 Report Share Posted August 30, 2014 Hello. I've got a 9090 kit here that I'm eager to build, but I'm a bit confused about transformer wiring. This is the entry on the power section: Reveal hidden contents He recommended to get a ring type transformer so I bought this one: Reveal hidden contents But it's parallel? I'm not really sure how to properly hook it up. Any of you guys have any insight on this? Did I buy the wrong type? Thanks. Thanks Haha Confused Sad Facepalm Burger Farnsworth Big Brain Like × Quote Hide DerWaschbar's signature Hide all signatures <3 </3 ¯\(シ)/¯ Link to comment https://forum.watmm.com/topic/84698-diy-electronics-question/ Share on other sites More sharing options...
DerWaschbar Posted August 30, 2014 Author Report Share Posted August 30, 2014 Wiring diagram from the 9090: and the data sheet from the transformer Thanks Haha Confused Sad Facepalm Burger Farnsworth Big Brain Like × Quote Hide DerWaschbar's signature Hide all signatures <3 </3 ¯\(シ)/¯ Link to comment https://forum.watmm.com/topic/84698-diy-electronics-question/#findComment-2210483 Share on other sites More sharing options...
Danny O Flannagin Posted August 30, 2014 Report Share Posted August 30, 2014 What do you hope to achieve once this is done? Sorry, no idea how electronics work Thanks Haha Confused Sad Facepalm Burger Farnsworth Big Brain Like × Quote Hide Danny O Flannagin's signature Hide all signatures https://nimajeb.bandcamp.com/music https://www.instagram.com/bengastphoto/ Link to comment https://forum.watmm.com/topic/84698-diy-electronics-question/#findComment-2210485 Share on other sites More sharing options...
DerWaschbar Posted August 30, 2014 Author Report Share Posted August 30, 2014 it's to power a 909 clone. I've just notice it says it outputs 15VAC not 15VDC, so I'm pretty sure I'm hooped lol. Thanks Haha Confused Sad Facepalm Burger Farnsworth Big Brain Like × Quote Hide DerWaschbar's signature Hide all signatures <3 </3 ¯\(シ)/¯ Link to comment https://forum.watmm.com/topic/84698-diy-electronics-question/#findComment-2210489 Share on other sites More sharing options...
futureimage Posted August 31, 2014 Report Share Posted August 31, 2014 On 8/30/2014 at 1:46 AM, DerWaschbar said: it's to power a 909 clone. I've just notice it says it outputs 15VAC not 15VDC, so I'm pretty sure I'm hooped lol. Yeah there's no real way you're going to get smooth 15VDC from 15VAC, sorry dude! You'll need some "headroom" from the transformer output in order to then rectify and then use smoothing caps to get your 15VDC supply. Thanks Haha Confused Sad Facepalm Burger Farnsworth Big Brain Like × Quote Hide futureimage's signature Hide all signatures New Future Image album, Definite Complex, out now!FUTURE IMAGE RECORDS Future Image Definite ComplexIntelligent Dasein Sound Experiments #1papertiger harmonizing the seamsP/R/P/E The Speed of RevolutionWilliam S. Braintree This is StoryKaleid Machines Link to comment https://forum.watmm.com/topic/84698-diy-electronics-question/#findComment-2211169 Share on other sites More sharing options...
AAAAh Posted September 2, 2014 Report Share Posted September 2, 2014 I also have a 9090 kit! I should make time to make it. Whether or not toroidal transformers are worth it is a matter of opinion. As i understand it you need a transformer that steps down a mains voltage to -15 0 +15 volts. The datasheet tells you you need the input to be wired in parallel for US voltage, canadian voltage is slightly higher, idk if this will make any real world difference. The output should also be in parallel for 15V out. I believe this is the configuration you would need: http://www.delabs-circuits.com/cirdir/electric/tables/center_tap_transformer.png BE BLOODY CAREFUL!!!!! don't electrocute yourself pls. Note that the 9090 runs fine from a 15v wall PSU, which would be safer. links: http://www.9090project.co.uk/download/9090userguide161102.pdf http://www.muffwiggler.com/forum/viewtopic.php?t=118599&postdays=0&postorder=asc&start=0 http://www.soundstage.com/maxdb/maxdb071998.htm Thanks Haha Confused Sad Facepalm Burger Farnsworth Big Brain Like × Quote Hide AAAAh's signature Hide all signatures triachus yelling AAAA really straings the voice, and the tiny h really represents the struggle and hardship a vocal chord must endure for yelling AAAA http://i.imgur.com/jXQiEuU.jpg Link to comment https://forum.watmm.com/topic/84698-diy-electronics-question/#findComment-2211750 Share on other sites More sharing options...
modey Posted September 2, 2014 Report Share Posted September 2, 2014 (edited) What is the purpose of building your own transformer? Is this some audiophile shit? Also isn't it technically illegal to work with mains plugs without a license? Edited September 2, 2014 by modey Thanks Haha Confused Sad Facepalm Burger Farnsworth Big Brain Like × Quote Hide modey's signature Hide all signatures youtube | bandcamp | soundcloud | twitter | facebook 0F.digital Link to comment https://forum.watmm.com/topic/84698-diy-electronics-question/#findComment-2211765 Share on other sites More sharing options...
DerWaschbar Posted September 2, 2014 Author Report Share Posted September 2, 2014 Cheers guys. I'll have a go at wiring like the diagram you posted there AAAAh. I'm to wire it 1+3, 2+4, 7+6, each pair together to the same spot? I won't get electricuted I promise. Also, you should build yours already! Jeez. I've got a Yocto I'm going to put together after this one! modey: I have no idea really. It's as it says to do in the build section... I'm also pleased to not have to find space for another wall wart. Anyways, if I can get this to work I'll be glad as there isn't anywhere to by parts near me and it takes about 2-3 weeks for a Mouser order to get here. Thanks Haha Confused Sad Facepalm Burger Farnsworth Big Brain Like × Quote Hide DerWaschbar's signature Hide all signatures <3 </3 ¯\(シ)/¯ Link to comment https://forum.watmm.com/topic/84698-diy-electronics-question/#findComment-2211820 Share on other sites More sharing options...
Luka Posted September 14, 2014 Report Share Posted September 14, 2014 did you work it out? if the 9090 expects a 15, 0, -15 vac input then you centretap the secondaries on your torroid Thanks Haha Confused Sad Facepalm Burger Farnsworth Big Brain Like × Quote Link to comment https://forum.watmm.com/topic/84698-diy-electronics-question/#findComment-2220190 Share on other sites More sharing options...
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