SV: [AMPS] 50hz? 25Hz???

[Johan Nordin]

>
>Bob says:
>
>>Who knows when and where in USA 25Hz was so common that 
>>'consumer electronics' was manufactured to operate on it.
>
>Don't know about 'consumer', but the latest Washington DC - Boston railway
>electrification  has some 25 Hz over part of its length, if I remember the
>article in IEEE VTS News correctly. That line has 3 or 4 different
>electrification systems, requiring automatic switching in the trains.
>
>
>73
>
>Peter G3RZP


The Railway in Sweden uses 16kV  16.67 Hz
In the really old sets (dont think they are in business nowadays)
the mains was just transformed down to drive all the bulbs
in the drivers cabin. The flickering was QUITE annoying
after a few hours of work...

73īs de SM3UZS

 


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