+9v to bipolar 18v regulated down to +/-15v

[EATyourGuitar]

ok so we have some really smart people here. I have found RG's +9v to +/-9v. also his +9v to +18v. I found +9v to +18/-9 on a datasheet. the obvious answer is to stack two max1044 converters. +9v to +18v in the first max. +18v to +/-18V in the second. in that setup, would I need to change the caps for larger farad value on the +18v to +/-18v. obviously I should use 50v caps. I intend to use regulators to get the +/-18v down to +/-15v. whats your favorite diode for this application. I have a wide selection. I'm thinking the 1N34A would be best.  should I worry about making pin 1 high on the max to get the 6x faster oscillator? should I run both max1044 on the same frequency?

ok so here is the second option I though up. based on this 16VAC to +/-15VDC regulated schematic

could I just feed it with a 555 oscillator coupled through a DC blocking cap. that should give me Vdd AC. only Vdd is 9v so its just 9VDC. I would need to run the 555 at +18v to even get close to my ~15VAC to 18VAC spec. this is getting complicated. I need to keep it small.

[Scruffie]

An LT1054 will both double and split (in fact a single MAX1044 can do this, just depends on the mA you need) if you use the MAX yes you should connect pins 1 & 8.

Shottky diodes work fine, 1N5817 are what I have to hand.

[EATyourGuitar]

my current draw is something like 10ma < x < 50ma. I think the max is putting out less than 10ma.

maybe I could just take the easy route and include an AC wall wart with the pedal. jameco has this. do you have a schematic on that LT1054? I realize I can probably do it with the max1044 but as of yet no one has shown me how. I been reading datasheets. whats really good with the schematic?

[EATyourGuitar]

An LT1054 will both double and split

I got that in the datasheet but its +5v to +/-12v @ 25ma per rail. scroll down to page 18 figure 25.
TI - LT1054 datasheet
on the first page of the datasheet it says it can do up to 100ma regulated. a lot of the examples show two DIP8 packages used together. if its regulated in the IC how do you adjust it? should I add a trim pot for each rail?