Assuming I have the same voltage, correct polarity, and sufficient current, can I generally replace any class 2 power supply with any other? This will be used for common household electronics. In particular, when researching power supplies, I see specifications for ripple, noise, setup, rise, and hold up time, and I'm not sure if these things are important to take into consideration when swapping power supplies. I have access to these specs for the new supply, but not the old one so I can't make any direct comparisons. I'd also like to know if it matters that the power supply types may be different (switching vs non-switching). Thanks for any responses.