Road Rage - 2 Questions - Multi-Tasking and 9V Regulation

[Ryan]

I have a couple Road Rage questions and I didn't see any threads that addressed them, neither did the Project Doc.

1 - Can one Road Rage board "multitask?" If I supply it with 9v of power, can a fully populated board output both regulated 12v and doubled 18v? Is there a way to calculate the available current in such a situation?

2 - First of all, nowhere in the PDF did it say how you would achieve 12v vs. 15v regulated power. The main reason for this question is, I'd like to use the Road Rage to filter and regulate an unregulated 9v Power Supply, but have it remain 9v. I don't need an increase to 12v. Is that as simple as adding a resistor or trimpot in series with the regulated output?

[sgmezei]

For question two, I believe you just have to use a 12v regulator instead of the 15 volt. If my thinking is correct that should clamp the voltage down to 12v.

[Ryan]

So then the regulated output is being fed by the increased voltage from the doubler circuit - meaning either regulated or doubled voltage will be limited to 20ma?

So I could use a 9-Volt regulator to bring it down to 9V, but then as to question 1, I'd be left with 20ma to split between two pedals. I think that answers my question. Thanks.

Edit: I should probably mention why I'm doing this: I have a RadioShack 1.5A 9V supply that I had been using up until getting my BBE Supa Charger. I love the Supa Charger but I want to try to avoid daisy-chaining, and having more than 8 pedals, I still need to use a couple wall-warts. This particular supply introduces a significant amount of noise into my signal. Since it's worthless to me adding all that noise, I thought I'd crack it open, rehouse it, add filtering, regulation, etc.

I thought, if I could accomplish all that with a single Road Rage that would be great. Seems that I might need to just re-use the transformer from the radioshack and add my own regulated, filtered output stage, and jack that out, but also feed a Road rage off it, in the same box, that way, I can have a ~1a regulated 9v output, and a ~20ma 18v output for my OCD.

[Scruffie]

An LT1054 will provide 100mA if that's of any use?

[cjkbug]

An LT1054 will provide 100mA if that's of any use?

just remember not to connect pin1 on an lt1054 or it wont work properly