On 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.

Bill

That would be quite difficult, I think, by the time everything is
weatherproofed. Mechanical coupling might be easier - motor on the
gatepost operated by microswitch coupling to a generator on the gate.

Or a hose and a water wheel.

Instead of LEDs use phosphors which are illuminated by ultra-violet
lasers. The lasers are fixed and only illuminate the phosphors when
they're in gate-closed position. Can't see the problem.

Cheers
--
Clive

Clive Arthur wrote:

Instead of LEDs use phosphors which are illuminated by ultra-violet
lasers.Â* The lasers are fixed and only illuminate the phosphors when
they're in gate-closed position. Can't see the problem.

Just coat the gate with radium paint ... simples

Andy Burns wrote:
Clive Arthur wrote:

Instead of LEDs use phosphors which are illuminated by ultra-violet
lasers.Â* The lasers are fixed and only illuminate the phosphors when
they're in gate-closed position. Can't see the problem.

Just coat the gate with radium paint ... simples


What about reflective strip on the gate and a light from a fixed location
that illuminates the strip? What is the primary purpose of illuminating the
gate with leds? Is it to make it visible to people approaching it, or for
the lights on the gate to illuminate the surrounding area?

On 24/11/2019 18:30, Tweed wrote:
Andy Burns wrote:
Clive Arthur wrote:

Instead of LEDs use phosphors which are illuminated by ultra-violet
lasers.Â* The lasers are fixed and only illuminate the phosphors when
they're in gate-closed position. Can't see the problem.

Just coat the gate with radium paint ... simples


What about reflective strip on the gate and a light from a fixed location
that illuminates the strip? What is the primary purpose of illuminating the
gate with leds? Is it to make it visible to people approaching it, or for
the lights on the gate to illuminate the surrounding area?

Replying to Andy and Tweed. I did wonder about a reflective strip. The
purpose of the illumination is
1. To have some fun
2. So I can see if the gate's closed without looking on the CCTV (it's
in a dark place)
3. To reduce the chance of a vehicle hitting the gate.

Bill

On Sun, 24 Nov 2019 19:10:59 +0000, Bill Wright
wrote:

On 24/11/2019 18:30, Tweed wrote:
Andy Burns wrote:
Clive Arthur wrote:

Instead of LEDs use phosphors which are illuminated by ultra-violet
lasers.* The lasers are fixed and only illuminate the phosphors when
they're in gate-closed position. Can't see the problem.

Just coat the gate with radium paint ... simples


What about reflective strip on the gate and a light from a fixed location
that illuminates the strip? What is the primary purpose of illuminating the
gate with leds? Is it to make it visible to people approaching it, or for
the lights on the gate to illuminate the surrounding area?

Replying to Andy and Tweed. I did wonder about a reflective strip. The
purpose of the illumination is
1. To have some fun
2. So I can see if the gate's closed without looking on the CCTV (it's
in a dark place)
3. To reduce the chance of a vehicle hitting the gate.

Bill
I was going to suggest a series of
reflectors/light-guides/fibre-optics illuminated from one 24W light
source when the gate is closed. Anyway a roadsign type of
retro-reflector would pick up the vehicle's headlights.
--
Dave W

On 25/11/2019 14:13, Dave W wrote:

I was going to suggest a series of
reflectors/light-guides/fibre-optics illuminated from one 24W light
source when the gate is closed. Anyway a roadsign type of
retro-reflector would pick up the vehicle's headlights.


How about if I mount a magnetron on a big satellite dish and point it at
a sealed container of water bolted onto the gate? The water boils,
powers a little Mamod steam engine that turns a dynamo which charges the
battery. Simples.

Bill

On Monday, 25 November 2019 19:19:47 UTC, Bill Wright wrote:
How about if I mount a magnetron on a big satellite dish and point it at
a sealed container of water bolted onto the gate? The water boils,
powers a little Mamod steam engine that turns a dynamo which charges the
battery. Simples.

Wouldn't a small illegal immigrant to power the dynamo be cheaper?

Owain

On 25/11/2019 19:19, Bill Wright wrote:
On 25/11/2019 14:13, Dave W wrote:

I was going to suggest a series of
reflectors/light-guides/fibre-optics illuminated from one 24W light
source when the gate is closed. Anyway a roadsign type of
retro-reflector would pick up the vehicle's headlights.


How about if I mount a magnetron on a big satellite dish and point it at
a sealed container of water bolted onto the gate? The water boils,
powers a little Mamod steam engine that turns a dynamo which charges the
battery. Simples.

Bill

Or-- (Lightbulb moment) If I mounted a loudspeaker near the gate and put
a microphone on the gate, and played really loud music with a lot of low
bass, the mike output should be enough to charge a battery. Simples.

Bill

On 24/11/2019 17:56, Clive Arthur wrote:

That would be quite difficult, I think, by the time everything is
weatherproofed. Mechanical coupling might be easier - motor on the
gatepost operated by microswitch coupling to a generator on the gate.

You've given me an idea. An extra wheel running on the gate rail turning
a generator!

Bill

Bill Wright wrote:
On 24/11/2019 17:56, Clive Arthur wrote:

That would be quite difficult, I think, by the time everything is
weatherproofed. Mechanical coupling might be easier - motor on the
gatepost operated by microswitch coupling to a generator on the gate.

You've given me an idea. An extra wheel running on the gate rail turning
a generator!


Acquiring a Bicycle wheel with a hub dynamo could be a solution for that
method, or just fix an old style bottle dynamo to the gate so that its
wheel rubs the rail.

With all your aerial experience cant you fix one on the gate to get some
energy from Radio 4 long wave or something.

GH

"Marland" wrote in message
...
Bill Wright wrote:
On 24/11/2019 17:56, Clive Arthur wrote:

That would be quite difficult, I think, by the time everything is
weatherproofed. Mechanical coupling might be easier - motor on the
gatepost operated by microswitch coupling to a generator on the gate.

You've given me an idea. An extra wheel running on the gate rail turning
a generator!


Acquiring a Bicycle wheel with a hub dynamo could be a solution for
that
method, or just fix an old style bottle dynamo to the gate so that its
wheel rubs the rail.

With all your aerial experience cant you fix one on the gate
to get some energy from Radio 4 long wave or something.

Nothing even remotely like enough energy that way.

On Mon, 25 Nov 2019 13:11:28 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

Acquiring a Bicycle wheel with a hub dynamo could be a solution for
that
method, or just fix an old style bottle dynamo to the gate so that its
wheel rubs the rail.

With all your aerial experience can¢t you fix one on the gate
to get some energy from Radio 4 long wave or something.

Nothing even remotely like enough energy that way.

That's not for a clinically insane senile know-it-all like you to decide,
senile pest!

--
The Natural Philosopher about senile Rot:
"Rod speed is not a Brexiteer. He is an Australian troll and arsehole."
Message-ID:

On 25/11/2019 01:01, Marland wrote:
Bill Wright wrote:
On 24/11/2019 17:56, Clive Arthur wrote:

That would be quite difficult, I think, by the time everything is
weatherproofed. Mechanical coupling might be easier - motor on the
gatepost operated by microswitch coupling to a generator on the gate.

You've given me an idea. An extra wheel running on the gate rail turning
a generator!


Acquiring a Bicycle wheel with a hub dynamo could be a solution for that
method, or just fix an old style bottle dynamo to the gate so that its
wheel rubs the rail.

With all your aerial experience cant you fix one on the gate to get some
energy from Radio 4 long wave or something.

GH


It's a pity it isn't possible to rectify UHF with a diode, because the
gate has clear sight of Emley Moor.

Bill

"Bill Wright" wrote in message
...
On 25/11/2019 01:01, Marland wrote:
Bill Wright wrote:
On 24/11/2019 17:56, Clive Arthur wrote:

That would be quite difficult, I think, by the time everything is
weatherproofed. Mechanical coupling might be easier - motor on the
gatepost operated by microswitch coupling to a generator on the gate.

You've given me an idea. An extra wheel running on the gate rail turning
a generator!


Acquiring a Bicycle wheel with a hub dynamo could be a solution for
that
method, or just fix an old style bottle dynamo to the gate so that its
wheel rubs the rail.

With all your aerial experience cant you fix one on the gate to get
some
energy from Radio 4 long wave or something.

GH


It's a pity it isn't possible to rectify UHF with a diode, because the
gate has clear sight of Emley Moor.

Wouldnt get enough power that way even if you could rectify UHF with a
diode.

On Mon, 25 Nov 2019 13:54:01 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


It's a pity it isn't possible to rectify UHF with a diode, because the
gate has clear sight of Emley Moor.

Wouldn¢t get enough power that way even if you could rectify UHF with a
diode.

In auto-contradicting mode again, you clinically insane trolling senile
pest? LOL

--
about senile Rot Speed:
"This is like having a conversation with someone with brain damage."
MID:

On 24/11/2019 17:56, Clive Arthur wrote:
Or a hose and a water wheel.

That's the way to do it. Heath Robinson would be proud of you...

recirculating pump on the gate post so there's a continuous stream of water.

Water wheel and generator on the gate so it intercepts the stream when
the gate is closed.

We'll all want it in the DIY FAQ... probably under humour

Andy