inexpensive voltage inverter

[ElectroChas]

Is there an inexpensive way to get -5v and/or -12v DC from a +12v DC?

I need to be able to handle about an amp? ( for quite a few dual supply op-amps )

I've seen a couple solutions such as this but the amp rating runs a bit shy.

Thanks in advance for comments and suggestions.
Chas

 

[Hero999]

What do you want to power?

Does it need to be regulated?

Is the current rating the same on all rails or is 1A the maximum total current?

 

[duffy]

You know they sell these things as modules for like fifteen bucks, right?

Digi-Key - PT78NR105V-ND (Texas Instruments - PT78NR105V)