How does this light switch work?

[Ian H]

The numbers go upto 7 on a dial but it just randomly turns off.

 

[HERTS P&D]

Is it some sort of timer switch for various amounts of 'on time'?

Andy

 

[ETAF]

i think its a night switch, only comes on at night - via the sensor at the top and the numbers are select the hours it stays on for
May be wrong
Modern version. https://www.tlc-direct.co.uk/Products/SMZV210N.html

 

[rsgaz]

See page 7, right hand side...

https://worldradiohistory.com/UK/Electronics-Today-UK/80s/Electronics-Today-1981-03.pdf

 

[ETAF]

Wow, i used to take that magazine for years

 

[Ian H]

See page 7, right hand side...

https://worldradiohistory.com/UK/Electronics-Today-UK/80s/Electronics-Today-1981-03.pdf

Thanks It must be faulty because it’s on and off randomly. God to know that it simply replaced a normal switch though so can be swapped back.

 

[Ian H]

.

 

[SUNRAY]

i think its a night switch, only comes on at night - via the sensor at the top and the numbers are select the hours it stays on for
May be wrong
Modern version. https://www.tlc-direct.co.uk/Products/SMZV210N.html

Ha! Totally correct, I remember them well and would trigger when you walked past them or a cloud.

 

[Taylortwocities]

I seem to remember these had a random on/off switch position. But that’s a long time ago.

 

[JohnW2]

I seem to remember these had a random on/off switch position. But that’s a long time ago.

Yes, I had one of those, but I think they were a different model (and/or make) from the 'fixed time interval' ones.

Kind Regards, John

 

[SUNRAY]

I seem to remember these had a random on/off switch position. But that’s a long time ago.

The one's I remember had variable finish times on the hours it was set to, IE something like +/- 15 minutes per hour so 1 hour would be anywhere between 45 and 75 mins and 4 hours between 3 and 5 hours

I fitted a few but they were something like £8 each as opposed to 2/6d for a switch.
At that time my wages were around £20 per week.

 

[JohnW2]

I fitted a few but they were something like £8 each as opposed to 2/6d for a switch. At that time my wages were around £20 per week.

Times have changed!

I remember having to pay a sum equivalent to several weeks' income for an extra 32 kB (yes, kB, not MB or GB) RAM for my first (self-built) computer, and, a bit later, goodness knows how much for my first (5 MB) hard drive!

Kind Regards, John

 

[SUNRAY]

Times have changed!

I remember having to pay a sum equivalent to several weeks' income for an extra 32 kB (yes, kB, not MB or GB) RAM for my first (self-built) computer, and, a bit later, goodness knows how much for my first (5 MB) hard drive!

Kind Regards, John

I recall buying a 2GB hard drive for £149 trade price and being criticised by all and sundry for buying such a big drive that would never in a million years get anywhere near filled... This was to replace a full sized [width of a 5¼" floppy and twice the height] 320KB HDD which deafened when running.

 

[securespark]

My first work computer was an Amstrad 9512, running Locoscript which was loaded up from disk every time.

That gave way to my first PC, a Fujitsu "multi-media" PC with Win 98 and a 3GB HDD. Can't remember the processor or memory, which is ironic!
It came with a Dolphin game and a copy of Compton's Encyclopaedia on CD ROM.

 

[bernardgreen]

Nostalgic memories
Intel 4004
Intel 8008
MicroNova
those were the days.