Why the tap?
- Thread starter JBR
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It's a standard 12 v bell transformer. They have a tap at 4 v so they can be used on 4, 8, or 12v systems. In this case it is used at 8v. Why the earth is on the 0v tap I don't know, it is usually on the 4v tap. There is another type that is 8v with a tap at 3 v enabling its use o 3, 5, or 8v systems.
Very common. Some systems require 8v and some need 12v. These days you often see transformers that have a 24v winding with taps at 8 and 12v.
Comme ca
Comme ca
If you use an electronic transformer you can have one with all manner of output voltages.
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Run away!
[Dives behind sofa]
[Dives behind sofa]
No such thing. Bells won't operate at 30kHz.
No - it was Winston + "low voltage" which did for that one.
Same here, in that everything visible looks innocuous. I can but presume that some posts were removed before it was locked. I suspect that the appearance of 'transformers' in the thread may well have had something to do with it
Kind Regards, John
What's wrong with transformers?
It's the evil Terminators who are going to take over the world!
Interestingly, recent discussions suggest that, other than in the eyes of BS7671, 'ELV' is "low voltage", so maybe the arguments are going to have to change (or disappear)!
Kind Regards, John
Maybe, but calling anything 'low voltage' is still not going to accurately the object in question.
The only way is to state the actual voltage.
The only way is to state the actual voltage.
Indeed so - and that's equally true throughout the range of the arbitrary classifications of voltage - not just at the lower end of 'LV'. I don't imagine, for example, that many people would even consider the possibility that a piece of equipment described as "low voltage" might be intended to be used with a supply of, say, 950V!
Kind Regards, John
If you were to look into cold cathode neon lighting, you'd find a large number of products made for domestic/hospitality interior lighting which work at a little under 1000V.
I've always assumed that's to get it to qualify as LV, instead of the HV normally used by neon signs.
I've always assumed that's to get it to qualify as LV, instead of the HV normally used by neon signs.
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