I don't understand resistors !

[IotaYodi]

@Groundloop!
Thats the first time Ive ever seen a U for Voltage. Where does that designation come from?

[DeepCut]

First time i'd seen it to but it also occurs on this page if you search the page (CTRL-F) for 'uout' :

http://en.wikipedia.org/wiki/Voltage_regulator


Gary.

[Groundloop]

@IotaYodi,

The standard metric unit of electric potential difference is Volt, abbreviated V and
named in honor of Alessandra Volta.

Groundloop.

[IotaYodi]

@IotaYodi,

The standard metric unit of electric potential difference is Volt, abbreviated V and
named in honor of Alessandra Volta.

Groundloop.

That I knew. What your saying then the U is actually a V.
Must be a typo on the Image.

[Groundloop]

@IotaYodi,

There is a difference in European and US standard of the letter used for Volt.
In US it is V. We use U for volt. For me the drawing is correct. You just
change the letter U to a V and the drawing will be correct for you. We use Ub
for battery voltage, Ui for input voltage, Uo for output voltage. You can use Vb,
Vi and Vo if you like. See: http://www.sengpielaudio.com/Rechner-ohmschesgesetz.htm
If you click the English version: http://www.sengpielaudio.com/calculator-ohmslaw.htm
then the use is V.

Groundloop.