So I've got a webcam that wants 5v @ 2A, and I have 24VAC available. Adding a bridge + cap is no problem, although that'd bring up the volts, but I can probably just put in some diodes if the converter is fussy. However, finding a converter (and I'd prefer a switcher to linear for various reasons) is proving difficult. This thing would do the job: http://littlebirdelectronics.com/products/dc-dc-power-module-25w But it's not available. Any suggestions?