9v Regulated and Filtered Power Supply

[the_random_hero]

This might not be the best place to put this, but I thought that you guys would have more of a clue than some other forums I'm a member off.
I'm looking at building a super-filtered and regulated power supply for running a few pedals off. As transformers are relatively expensive to buy, I was looking at a one-transformer model, such as this one:

Has anybody built this or something similar to it? I really just want a decent power supply for testing my pedals.

[smallbearelec]

This might not be the best place to put this

Actually, it probably is...

If you want to build the Ultra-Clean (which is the one that your link references), there is information at generalguitargadgets.com. It is a good design, and I think JD sells a PC board for it.

If you want a complete kit for a pedalboard supply, I offer a couple of possibilities:

http://www.smallbearelec.com/Categories.bok?category=Kits+And+Designs

The construction information is in Projects on my site, smallbearelec.com.

Whatever you choose, read the construction poop thoroughly and be sure that you have the chops to build correctly. Anything that runs off house current is by definition an advanced-level job.

Regards
Steve Daniels

[R.G.]

A fairly large fraction of us have built something similar. Your image didn't come up, but go read GEO (http://www.geofex.com); in particular:

Power supplies basics, 11/15/01  http://geofex.com/Article_Folders/Power-supplies/powersup.htm
Pedalboard Power supply http://geofex.com/Article_Folders/pedalbdpwr/pedalbd.htm
The Spyder 5/19/00  http://geofex.com/Article_Folders/Spyder/spyder.htm

Come back if those don't answer your questions. Superfiltered is not necessary, just OK filtered, then regulated.

[the_random_hero]

A fairly large fraction of us have built something similar. Your image didn't come up, but go read GEO (http://www.geofex.com); in particular:

Power supplies basics, 11/15/01  http://geofex.com/Article_Folders/Power-supplies/powersup.htm
Pedalboard Power supply http://geofex.com/Article_Folders/pedalbdpwr/pedalbd.htm
The Spyder 5/19/00  http://geofex.com/Article_Folders/Spyder/spyder.htm

Come back if those don't answer your questions. Superfiltered is not necessary, just OK filtered, then regulated.

I'm pretty good with the basics, I'm doing Electrical Engineering at the moment so most of the knowledge is there. I'm also doing a Cert. II in Electrical Repair, so I can (almost) legally play with 240v-connected equipment (I'm in Australia; plenty of strange laws out here concerning anything that can be plugged into a wall socket).
I'd build something like the Spyder, but I don't really want to spend money on eight separate transformers - being in Australia definitely has a lot of downsides. It's mainly just going to be used testing purposes with the pedals I build, so battery sag doesn't really appeal to me.
Thanks for the replies

[R.G.]

OK. In that case, get any wall wart that produces either AC or DC at over about 100ma and over 14V when made into DC. Run that into a full wave bridge rectifier, a 1000uF to 4700uF filter cap, then a 7809 regulator with a 1uF and a 0.1uF on its output. You're done.

As I said, super filtered is not needed. The regulator will knock off 40-50db of ripple. Ordinary filtered and regulated will do fine for testing pedals.

There is another option. Find a place there in Australia that carries the 1Spot power adapter. They cost about $20-25 in the US, more but not that much more in Oz. This thing puts out 1.7 amperes (1700ma) of regulted 9Vdc. I keep one on my bench for testing pedals all the time. Less expensive than some transformers and quicker than building your own.

[petemoore]

  Weber makes the Spyder tranny with the isolated DC outputs, very nice, IIRC under 20 for the tranny.
  I built it, works excellent. It got baked, I got a VoodooLabs PP2 Plus to replace it, I guess about 2x the cost of building parts?...minus the nice cables and housing, I used a gutted computer power supply [I kept the IEC Supply jack] box for the enclosure and chopped up a daisy chain for the 'legs.

[mrsage]

Mr Huge has been selling a few power supplies on ebay recently:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190130865167