On 29/07/18 16:22, R.Wieser wrote:
> The Natural Philosopher,
>
>> Its more a case that a higher voltage needs less current for the same
>> power.
>
> True. But you need to be able to convert that power to a lower voltage to
> again become usable.  Where with AC that can be easily managed with a simple
> transformer, that doesn't work as well for DC.

No,  its far easier especially in the downward voltage direction where a
PWM chopper  and a teeny choke and a capacitor will do the business.

Cheap semicinductors capable of extremely high speed switching have
changed the power game forever.

On chip, a small ferrite choke and a capacitor replace a whole lotta stuff.
>
>> Now the 132KV lines make sense...
>
> If it would be DC, not really. :-)

Oh dear.

https://en.wikipedia.org/wiki/High-voltage_direct_current

>
> Regards,
> Rudy Wieser
>
>


--
It’s easier to fool people than to convince them that they have been fooled.
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