I'm working on a project that has a number of parts, some op-amps running at +/- 15V, some headphone amps running at 12V (about 100mA each) along with some 12V relays and LED's.
My current iteration of this project relies on 2 +15VDC plug-in adapters coupled to give me a 30V swing. However, I've burned up more than a few op-amps by the power supplies being plugged in one before the other.
The biggest concern I have with this version is that it will be traveling and shipped OFTEN. I don't know if I want to go with two separate adapters for fear that during transport, one will come unplugged and leave me stranded during a week-long road trip.
I found this power supply: http://www.jameco.com/Jameco/Products/ProdDS/237367.pdf?avad=55097_c3a5ef97&source=Avantlink
. I was told the ripple noise was too high so it would need some additional filtering. When I asked a very good engineer about the best way to filter that, he told me that the best option would be to find a +/- 22VDC supply that I'd regulate and filter on the op-amp circuit board.
Does anyone know of a dual output +/- 22-24VDC supply similar to the external form factor like the one above? Been looking for hours and haven't found one yet...