Shaver light question

Yes, that is quite normal.

It is fairly common for such sockets.

Likely to be an auto transformer across the mains tapped to give the

Even then their poxy US mains powered shavers do not work at all well on UK 50Hz since they rely on 60Hz mechanical resonance. Aren't most shavers now rechargeable so the thing has outlived its usefulness?

Otherwise you would need to leave the light on to charge an electric tootbrush.

Many modern shaver sockets only power the transformer when a plug is inserted into one of the sockets.

Scott snipped-for-privacy@gefion.myzen.co.uk> wrote in news: snipped-for-privacy@4ax.com:

Don't some have a switch operated by inserting the plug - that switches on the Primary?

Martin Brown submitted this idea :

No, they have to be an isolation transformer, no electrical connection between 240v mains and the secondary output.

DerbyBorn used his keyboard to write :

I would imagine most of the modern ones are switched internally.

Mine is only a couple of years old, but doesn't seem to have that function :-(

Could it be the lamp ballast that is getting warm? Even if the transformer primary is always on they don't usually get very hot off load.

My old shaver socket has an isolating transformer, and is slightly warm at all times.

- Dave W

At least one of mine does - you can hear it hum when a lead is inserted

- although you can hear it best from the other side of the wall its fixed in! I will have a listen to the other and see.

Thanks for the replies. I'll assume that there's an isolating transformer permanently connected. Not a lot I can do about it, but it only gets very slightly warm, so no great problem. I'm a little surprised, though...

Is that an open circuit lead? Mine has no switch but hums loudly when a load is attached.

It certainly does with an electric toothbrush base with no brush inserted (although the latter may include a SMPSU). I might go investigate with an old style shaver lead and report back...