Moog Music Forum

latigid on wrote:To any fellow DIY-ers, I think I have found another solution:





https://taweber.powweb.com/store/magnetic.htm

Scroll down to the bottom for "WPDLXFMR-2" (or -1 if you're in the US )

1x bridge rec, 1x 7809 regulator and 2x caps per secondary then you're in business!

Are you going to build one?
Its my understanding a toroidal transformer is a better choice than an Iron Core for audio applications. What do you think?

Yes, I ordered a few of these. Toroidals have lower electrically induced noise and will fit in a 1U 19" rack case, but I couldn't find any around with more than two secondaries. I guess it's really important when your transformer is right beside your PCB, but enclosed in a metal box the RFI of a conventional transformer shouldn't be too bad.

I'll let you know how they go anyway

Andy

latigid on wrote:Yes, I ordered a few of these. Toroidals have lower electrically induced noise and will fit in a 1U 19" rack case, but I couldn't find any around with more than two secondaries. I guess it's really important when your transformer is right beside your PCB, but enclosed in a metal box the RFI of a conventional transformer shouldn't be too bad.

I'll let you know how they go anyway

Andy

Thanks! I look forward to it.
Are you free forming it or working from a similar schematic?
And are you using solderable perf board? or is there a prefab board available from the internet?

latigid on wrote:Yes, I ordered a few of these. Toroidals have lower electrically induced noise and will fit in a 1U 19" rack case, but I couldn't find any around with more than two secondaries. I guess it's really important when your transformer is right beside your PCB, but enclosed in a metal box the RFI of a conventional transformer shouldn't be too bad.

I'll let you know how they go anyway

Andy

Keep us updated! This looks like a fun project! If it goes well for you, I'll build one myself.

tubeampguy wrote:

latigid on wrote:Yes, I ordered a few of these. Toroidals have lower electrically induced noise and will fit in a 1U 19" rack case, but I couldn't find any around with more than two secondaries. I guess it's really important when your transformer is right beside your PCB, but enclosed in a metal box the RFI of a conventional transformer shouldn't be too bad.

I'll let you know how they go anyway

Andy

Thanks! I look forward to it.
Are you free forming it or working from a similar schematic?
And are you using solderable perf board? or is there a prefab board available from the internet?

I got onto the transformer from here. There isn't a lot to a linear PSU anyway, but I might just check their calculations for capacitor values. It's so simple that perf/vero board will do, I think.

Happy Veteran's Day to you all!

Thanks TubeAmpGuy.

I've ordered the Voodoo.

Not to spam the thread, but I have a Pedal Power 2 Plus on ebay right now: http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 0344964978

Bryan

Here's a cheap solution to the problem of powering multiple wall warts.

There's a 4-outlet alternative, too.

The best solution for me so far has been the T-Rex Juicy Lucy http://t-rex-effects.com/Default.aspx?I ... VariantID=

First off it lets my run my foogers at 12v which I highly recommend for anyone who hasn't tried it. Also, each output is isolated so you can add a daisy chain to any output and power a couple pedals.

I have a bunch of 12v pedals (all moogs can do 12v, an ad900, some lovetones, couple distortions) or 9v pedals I like to run at 12v so that works for me.

The key is it has a couple isolated outputs that I can daisy chain which provide enough mA to power a couple foogers or other pedals without noise that comes from using 1 chain like a powerall/onespot. I think I looked at their 9v supplies and they didn't provide as many mA per output.

Edit: for cheapness. You should be able to put nearly all your moogers on a powerall/onespot as long is it only has positive tip pedals on it.

what about squid strips?

http://www.google.com/products?q=squid+ ... hl=en&aq=f

what happens when foogers are run at 12v? would never think to do that

samaepstein wrote:what happens when foogers are run at 12v? would never think to do that

With the 101 for instance, hitting the 9v to 12v switch results in less gain/envelope.. probably less headroom overall in the 'foogers at 12v, at least with the voltage coming from the PP2+.; can actually make for some nice gurgly envelope filter tones in the fast envelope setting.

and doing this has no possible negative side effects for any of the foogers?

According to the 102 manual, you can run the ring mod on 9-12 VDC. I recall that in the 251 and 103 manuals as well. Keep in mind that most 9VDC wall warts actually put out 10-12 volts, and most 12 volt ones run up to 15 volts. I'd test the outputs before plugging the 'Foogers into those connectors. Damage can indeed occur over time if they are constantly over-powered.

"Heat is the enemy of electronics"

More voltage in = more heat to dissipate.

Why does a transformer "give out" more voltage than what it's supposed to?

The device is drawing less than the specified maximum current e.g. 200mA

If you use a high-current supply, make sure it's regulated or else the voltage could kill your gear.