Re: Why Buy a Converter?

On 28 Apr 2008 07:23:45 GMT, phil-news-nospam@[EMAIL PROTECTED]
 wrote:

>  Some wall warts are for one voltage.
>Some are for the full 100-240 volt range.  A friend from Germany brought
his
>with him a year ago.  They worked fine on 120 volts.
To add: It is all in the label, Pay CLOSE attention to the details.
120/240 implies a SWITCH or jumper to change the voltage, but it is do
able.
(Some older International equipment had a selector switch for even more
precise voltage settings:100,110,120,127,200,220,240)
120 - 240 implies automatic voltage adjustment/design
120 (or 240) means you need some external method (or alternate adapter) to
raise/or drop the voltage.

Additional note: equipment labeled (only) for 60Hz may not work well (or
last
long) at 50Hz. Transformers and Motors need more Iron in the core than a
60Hz
version . Rectifier Filter capacitors need to be larger. Older tape
recorders
and turntables derived their speed from the mains frequency. alternate
pulleys
or bu****ngs were used for frequency changes.