I think his issue is that in order to connect the lights on a sliding
structure, he needs a long bit of cable, susceptible to damage, hence why he
wants it to be wireless.
Many years ago, and don't try this at home folks. I saw an electric
helicopter being powered by a microwave beam from a modified oven. I somehow
think that the power loss and danger involved in powering leds this way
might be a slight issue though.

I still think some sliding contacts are the best bet myself, Low voltage, so
no danger and if shrouded well, will probably last for years assuming the do
not corrode, the sliding motion may keep them clean.
Brian

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"Woody" wrote in message
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On Sun 24/11/2019 04:18, Bill Wright wrote:
I want to put some LED lights on my sliding gate. I wondered if I could
power them inductively, with a power 'transmitter' fixed to the gatepost
and a power 'receiver' on the gate, positioned so when the gate's shut
they are close together and the LEDs come on. The power requirement of
the lights is 24W at 12VDC. The positional accuracy of the gate is good.


Magnetic switch if close enough, or some form of proximity sensor if
farther away? Look at burglar alarm kit - plenty of that sort of thing.
You might need to incorporate a small relay or transistor switch to handle
the current though.

--
Woody

harrogate three at ntlworld dot com