Powering an E-H Electric Mistress...?

[Steben]

Hey guys!

I recently bought an non-deluxe electric mistress. It's the big muff like box type with green font (70ties?).
It has no DC power supply jack. The battery clips are cut off.

My question: is this 18volts? The IC's are: LM339, 4558, µA741, 4013, SAD1024 ; no regulator.
Will it work on 12,5volts?

[Steben]

OK, I ckecked it:
http://www.muzickicentar.co.yu/sheme/effects/tremphasflangchor/ElectricMistress.gif

I never cared to examine a mistress schematic before, looks like the 741 is there for some regulation. The clock part is very sophisticated too, buffering the clock signal a lot?
18 to 24Volts?? Do I need an E-H adaptor for that?
According to the presumed consumption, I better stick a DC jack in there, no batteries, right?

[Bernardduur]

There were two versions: one 18V, one 9V.

I've got the 9V and really love it. Hope you like it too!

Last, be carefull with the polarity; I've burned my Electric Mistress already two times.

[Steben]

How to tell it's 9 or 18 version?
Are they all the same parts? Probably not, because it would mean there would be no difference, isn't it?
Does Tonepad help for comparing both? (I mean: is the Tonepad Mistress the correct 9V-version?)

EDIT!: In the tonepad version there is no 741 chip, so I'm convinced that the presence of that OA (which is featured in mine) is a feature of the 18volts version, right?
Bernardduur: is there a 741 on your board?
It looks exactly like this, but mine has different screws (no crosses):

[Bernardduur]

I know there are a lot of 18V schematics on the net and only few (one) of the 9V. I would just compare them both to your PCB

[Steben]

http://cgi.ebay.com/Vintage-1970s-Electro-Harmonix-Electric-Mistress-EH_W0QQitemZ7358064486QQcategoryZ41417QQcmdZViewItem

Strange, the thing uses 2 9v batteries, but a 9v supply?!? 
Is that 9V AC maybe? I have a 9V supply, which outputs 12,5V.

If I get it to work correctly, I'll have one of the most famous flangers in the world together with my beefed up BF-2.
I guess I'm going to comparison-test them a lot.

[Bernardduur]

Here is my board. Can't see any 741's on it

And yes, this is the best flanger I have ever played (and I played a lot )

[Steben]

Thanx, mine looks much different.

My problem is narrowed down to finding the right power supply.

[nelson]

http://cgi.ebay.com/Vintage-1970s-Electro-Harmonix-Electric-Mistress-EH_W0QQitemZ7358064486QQcategoryZ41417QQcmdZViewItem

Strange, the thing uses 2 9v batteries, but a 9v supply?!? 
Is that 9V AC maybe? I have a 9V supply, which outputs 12,5V.

If I get it to work correctly, I'll have one of the most famous flangers in the world together with my beefed up BF-2.
I guess I'm going to comparison-test them a lot.

I imagine the batteries are in parallel the current consumption would drain one battery quickly.

[Bernardduur]

DC brick has three 18V outputs