So you think it is possible to connect them via a diode (which type btw?)? That would be cool.
What I'd probably do is put a diode (the diode isn't critical, any diode that can support the voltage and current is fine since it's working with DC) and a resistor on each one. Since you're powering a nixie, it seems to me you could just double the anode resistor value (e.g. half the current) and put that resistance in series with each supply, which should give good current sharing, even if the output voltages don't match (which they won't).
I got mine from Ebay for $40 each, retail price is shocking $378, I just got a quote but I am not going to pay this high price :-/
Good catch! Yeah, I won't be buying 'em new either! I wonder if the seller has any more.
- John
