I was sent details of this plug which (apparently) steps down the household voltage from circa 240V (in EU) to 220V. I understand the concepts of stepping down voltage, but with a simple plug-in device? Is that possible or is this junk science.
You can pinch very small amounts of free electricity past a meter by a suitable capacitor to phase shift voltage and current. It becomes hopelessly difficult to do at high currents though.
You cannot have something for nothing in the way that they imply.
Reading the 'comments' it wasn't obvious why anyone would want to buy five of the things, when the web site implies that one does the job. Several of the comments had a certain sameness about them, as if all written by one person, i.e. the seller!
Tapped autotransformer. Would work with low current devices. Most tvs had such a beast built in in the 1970s, you just moved a little jumper plug. Brian
Oh its one of those is it, well yes the old ones are the best. The question seemed to be saying how can I run a 220 device from 240, most will tolerate that but I used to have a little psu for a tv that eventually welded itself to a coffee table through trying to reduces the voltage. Brian
The voltage used throughout Europe (including the UK) has been harmonised since January 2003 at a nominal 230v 50 Hz. That is only the nominal voltage and it has a tolerance (230 volts -6%, +10%).
UK mains voltage cab be 216 volts to 253.0 volts.
Shouldn't the statement "95% of user who have tried ElectroPro have saved up to 52% off their bills a month" tell you it is a snake oil product?
Since electric heating converts as near as dammit all the electricity into heat, the only way it could save you money is by reducing the heat output. So save your money and do that on the thermostat instead.
It shows a 35% saving on tungsten lighting. Run a tungsten bulb at a lower voltage and you will save money. But the bulb becomes even more inefficient. So more economical to fit a smaller bulb and run it at full voltage.
Scam for sure. There are ways to trim power use, but not to the levels they claim, nor as easily, nor is it the same approach for every device, nor can it be done by just plugging something in somewhere, nor can it be done with all appliances.
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