[SML] Electrical question

[Joe]

I am curious about the details of the ones that died, vs. the ones that survived.  Older transformers were simply wires wrapped around a core, plus some diodes. It is very hard to kill one of those.  It would have to be connected to a load that is too heavy for them, and cause them to melt down.  Most doorbell, 24v transformers that I have seen, are of the old-fashioned type.

Modern ones have electronics in them, and a much smaller transformer. So, they are generally much lighter.  But, the electronics in them are more susceptible to damage, or just age.

-Joe



 On Tuesday, August 16, 2022 at 08:27:47 AM EDT, Paul Guncheon via Stagecraft <stagecraft at theatrical.net> wrote: 

Kinda off topic: I had a power outage at home that lasted about 6 hours. After the power came on, I discovered that three wall warts (the ubiquitous plug-in transformers) were dead. As I hadn't used the devices that these wall warts powered all that often, it was days or weeks after the power outage that I found out so I'm not sure that the power being turned back on was the cause. Is it possible that it was? Note that several other transformers, notably Apple device chargers, were not affected. However, the ones that died were connected to devices (they were not powered on at the time) but the Apple chargers were not connected to anything.

One of the ones that died powered my doorbell... which is why this is so curious. The other two were less than two years old.

-p

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