<div dir="ltr">Just guessing, FR power supplies blocks are really high-tech ones if they contain a usb-powered 230V power inverter in the same package :-D<br><br>to get 5VDC from 230VAC you need at least a transformer and a diode bridge + low voltage capacitors, or a step-down hasher like desktops/laptops power supplies.<br>
<br>but, to get 230VAC from 5VDC, you will first need 5VAC with an oscillator, then a step-up transformer :)<br>This is not something you'll find on a standard power supply plug :)<br>Also, the shock would not be the same if you had been shocked with a normally operating 230v supply (I mean the amount of energy absorbed by your body) :)<br>
<br>this is more likely to be a capacitor effect. There are some on the 230VAC side of all power supplies, to filter EMI.<br><br>and a coil cannot store potential, it's a capacitor job :)<br>a coil regulates spikes et reacts to transient voltages only. for DC current, a coil is a simple wire.<br>
<br>sl<br><br><div class="gmail_quote">2008/10/9 Thorben Krueger <span dir="ltr"><<a href="mailto:thkruege@googlemail.com">thkruege@googlemail.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
It might be a case of the transformator working in reverse: A small<br>
voltage applied to the usb output leads to a high voltage at the<br>
prongs. This could also be caused by a capacitator on the low voltage<br>
end, but I am not sure.<br>
<br>
Just guessing here.<br>
<br>
However, if you were to touch the prongs the moment they were out of<br>
the socket, the coil could still hold some potential to shock you.<br>
<br>
Also just guessing.<br>
<br>
Thorben<br>
<br>
2008/10/9 Christ van Willegen <<a href="mailto:cvwillegen@gmail.com">cvwillegen@gmail.com</a>>:<br>
<div><div></div><div class="Wj3C7c">> Hi,<br>
><br>
> this morning, I pulled the FR adapter out of the (230 VAC) socket, and<br>
> accidentally touched one of the prongs. I experienced a short shock.<br>
><br>
> Is there a capacitor in there that can do that? It was fully out of<br>
> the socket when I touched it!<br>
><br>
> Christ van Willegen<br>
> --<br>
> 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0<br>
><br>
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