Recent content by accpf

I have no idea if either transformer is double-insulated. In terms of safety, the new one is UL certified and fused. Both the old and new ones are ungrounded. However, I don't know if the primaries and secondaries are isolated within the transformer. Here's another question: With an AC-DC...

Okay, I have a new but very-related question. Can anybody see any potential problems with swapping out AC-to-AC transformers? I am considering using a transformer that is used by a security camera system, on a sprinkler system. In addition to powering the timer electronics, the power is used...

Thanks berkeman, your in-depth answers are helpful and certainly give me a lot to think about.

Berkeman, why do you think the modem would have an issue with a switching power supply? I have access to a spec sheet... is there anything in there that I should look for to determine the "cleanliness" of power coming out of the supply, or to determine if the PS will work in such an...

This question applies to things like DSL modems, answering machines, etc.

Could any of those variables (ripple, noise, setup, rise, hold up time, switching vs nonswitching) cause the electronics to have a shorter life? I can see how noise would affect audio quality, but that aside can I be hurting my electronics by using a different power supply?

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...