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-   -   MK dimmer plug (https://www.vintage-radio.net/forum/showthread.php?t=158684)

Tom williams 6th Aug 2019 6:43 pm

MK dimmer plug
 
3 Attachment(s)
Hi there,
Today I picked up this little Jem, it is an MK plug with another socket on the back, on the bottom there is a flex outlet which has a two-core flex leading to the dimmer switch shown in the photos, the plug has a maximum load of 400 Watts and uses the slightly older type socket shutters.

Photos:

Graham G3ZVT 6th Aug 2019 7:25 pm

Re: MK dimmer plug
 
I've not seen one of those before, although I have in the past cobbled together home made units that did much the same thing.

It's a pity MK abandoned that shutter design, it was an outward sign of some very well built accessories.

Tom williams 6th Aug 2019 7:32 pm

Re: MK dimmer plug
 
Hi rambo1152,
The only problem with this shutter design is that it makes it easy to shove a euro plug into the socket without an adaptor, as said by John ward.
https://youtu.be/4PB-nhM0YBY

G6Tanuki 6th Aug 2019 8:10 pm

Re: MK dimmer plug
 
Quote:

The only problem with this shutter design is that it makes it easy to shove a euro plug into the socket without an adaptor, as said by John ward.
Some of us would view that as a benefit/convenience not a problem!

I've not seen a "dimmer-adaptor" like the one shown; I'm intrigued - presumably the bit-with-the-knob is a traditional thyristor-dimmer, wired in series with the live-pins on the 'adaptor' bit?

I remember a similar sort of "regulator" thing - in traditional brown Bakelite - from my youth. It looked like an oversized 13A adapter but only had one socket-outlet, and a knob/dial on the top along with a little window through which a neon-bulb would glow. It was used to regulate the heat to infra-red heater-bulbs in lambing-pens. As the weak lambs got stronger the control would be dialed-back because they no longer needed so much radiant heat to keep them alive.

Graham G3ZVT 6th Aug 2019 9:33 pm

Re: MK dimmer plug
 
Quote:

Originally Posted by Tom williams (Post 1166517)
Hi rambo1152,
The only problem with this shutter design is that it makes it easy to shove a euro plug into the socket without an adaptor, as said by John ward.
https://youtu.be/4PB-nhM0YBY

There are two shutter designs of those sockets, the earlier design did accept a Europlug.

I'm a fan of JW, I wonder if he watches my channel ;D
https://youtu.be/JSLuhwfDeXE

ralphshephard 8th Aug 2019 9:32 am

Re: MK dimmer plug
 
Clas Ohlson (the really useful store) sell / used to sell a similar thing. Very useful for making real Christmas lights last longer.

BRASSBITS 8th Aug 2019 10:17 am

Re: MK dimmer plug
 
We used to sell them back in the day.

MK did two versions, the one in the op and a cone shaped one in bright orange.

Tom williams 8th Aug 2019 11:06 am

Re: MK dimmer plug
 
Quote:

Originally Posted by rambo1152 (Post 1166539)
There are two shutter designs of those sockets, the earlier design did accept a Europlug.

Hi rambo1152,
I did try a UK to euro adapter in it and all that happened was the shutters moved back, they did not allow the euro adapter to be inserted.

usradcoll1 10th Aug 2019 2:28 am

Re: MK dimmer plug
 
Quote:

Originally Posted by G6Tanuki (Post 1166530)
Quote:

Originally Posted by Tom williams (Post 1166517)
The only problem with this shutter design is that it makes it easy to shove a euro plug into the socket without an adaptor, as said by John ward.

Some of us would view that as a benefit/convenience not a problem!

I've not seen a "dimmer-adaptor" like the one shown; I'm intrigued - presumably the bit-with-the-knob is a traditional thyristor-dimmer, wired in series with the live-pins on the 'adaptor' bit?

I remember a similar sort of "regulator" thing - in traditional brown Bakelite - from my youth. It looked like an oversized 13A adapter but only had one socket-outlet, and a knob/dial on the top along with a little window through which a neon-bulb would glow. It was used to regulate the heat to infra-red heater-bulbs in lambing-pens. As the weak lambs got stronger the control would be dialed-back because they no longer needed so much radiant heat to keep them alive.

In the US, it was a novelty to make table lamps to have a "touch" type dimmer, where all you had to do was touch the metal work on the lamp to select three light levels and off or on. Of course, our lamps are not earthed, because at our lower mains voltage. I actually repaired the dimmer module in a few. Generally it was a shorted triac, that failed because of a short circuit lamp.
I bought a lamp module from a charity shop, that was similar to the one shown. It worked just by plugging a lamp in that had a metal base. It works the same as one that has a dimmer module built in.
Dave, as usual, always collecting. :zzz:

paulsherwin 10th Aug 2019 9:51 am

Re: MK dimmer plug
 
The vast majority of table lamps in the UK are also unearthed. They are fitted with a BS1363 13A 3 pin plug because that is the only plug in the system. The earth pin isn't connected to anything and just operates the socket shutters.

Touch controlled lamps were also popular here for a while, but now appear to have fallen out of fashion.

Guest 10th Aug 2019 3:16 pm

Re: MK dimmer plug
 
Quote:

but now appear to have fallen out of fashion
All done by ones* 'phone these days (another useless gadget). All my lights are digital, I put my digit on a switch and a binary result happens, on or off.

Back on topic, it is reassuring to see a 13A socket labelled for reduced current use, as I want to tap from the lighting circuit for a low power use socket (charging SHMBOs eBike in a lit shed).

*Everyone assumes you have one, I don't

usradcoll1 10th Aug 2019 5:08 pm

Re: MK dimmer plug
 
I own one of the lowest price phones that I seldom use! I have over 3500 minutes of use left.
Back on topic, If I can buy an electrical gadget for mere pennies , I can't resist it!
As usual, your entries are very cleverly written!
Dave, US radcoll1, another one that caters to my feline types. :laugh1:

Lancs Lad 10th Aug 2019 6:28 pm

Re: MK dimmer plug
 
Yes, Dave, we do love our cats here on UKVRRR!

Guest 10th Aug 2019 8:38 pm

Re: MK dimmer plug
 
Quote:

As usual, your entries are very cleverly written!
If that is me it's down to a very nice lunch at the local gastropub with 'er indoors with a good helping of an ethanol based side dish.

On topic bit, dimmed lights and a cat or two are useful after that.

usradcoll1 11th Aug 2019 5:11 pm

Re: MK dimmer plug
 
Quote:

Originally Posted by paulsherwin (Post 1167171)
The vast majority of table lamps in the UK are also unearthed. They are fitted with a BS1363 13A 3 pin plug because that is the only plug in the system. The earth pin isn't connected to anything and just operates the socket shutters.

Touch controlled lamps were also popular here for a while, but now appear to have fallen out of fashion.

The new US NEMA 5-15 receptacles have a form of shutter system incorporated. The live and neutral prongs have to be inserted simultaneously for the shutters to open. They're generally located in areas that would be accessible to small children.
USradcoll1, Dave. :wave:

Lancs Lad 11th Aug 2019 6:42 pm

Re: MK dimmer plug
 
1 Attachment(s)
Sounds like the excellent 1980s MK sockets, that didn't have an earth pin-operated shutter system (see pic)

I've had them in this house for forty years, and never had a fault, or needed to replace any.

Graham G3ZVT 12th Aug 2019 1:38 am

Re: MK dimmer plug
 
Quote:

Originally Posted by Lancs Lad (Post 1167526)
Sounds like the excellent 1980s MK sockets, that didn't have an earth pin-operated shutter system (see pic)

I've had them in this house for forty years, and never had a fault, or needed to replace any.


Same here, although none of mine are switched.
I've just had a kitchen refit, and now I have seven double and one single sockets of unknown manufacturer, but at least they have switches.
I tell you, they'll be trouble!

I like slim BICC plugs as well, even it they are "illegal" now.

Lancs Lad 12th Aug 2019 2:08 am

Re: MK dimmer plug
 
1 Attachment(s)
Most of mine aren't switched either (pic) The one with switches was bought specially because, years ago, we only had a basic manual electric kettle (no auto switch-off) and my Mother didn't like unplugging the boiling kettle every time, because there was usually a blue spark when the plug was withdrawn.

I really like the Legrand/BICC plugs too! Why are they 'illegal', Graham?

First I've heard of it!

Graham G3ZVT 12th Aug 2019 3:28 am

Re: MK dimmer plug
 
1 Attachment(s)
Non-sleeved L & N pins. Must not be fitted to equipment offered for sale or hire.

Lancs Lad 12th Aug 2019 3:43 am

Re: MK dimmer plug
 
I have twelve of those plugs, Graham.

Ten have sleeved pins, and two haven't - all in regular use!

I live dangerously me :o :-D


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