[Boatanchors] Running European 230 VAC on our AC

[Bry Carling]

Keith - using a step-up transformer will always be the safer way to arrange things.  

Read all the AC safety information in an ARRL Handbook or other reliable text and set things 
up with proper grounding etc. and you should do fine. Just be careful any time you are 
working with higher voltages like that. Don't smoke your fingers... or your heart, dear friend!

All the best with the project. My FIRST computer printer in 1982 was a Model 15 
RTTY machine that looked like a green mailbox. It was connected to a Radio Shack Color 
Computer - my dream machine that was the least expensive way onto RTTY, CW and other
early digital modes. Someone gave the Model 15 to me at a hamfest to make some space in 
their garage. 

It was possible back then to make a 170 volt DC loop supply and interrupt it with a homebrew
solid-state adapter interfaced to / from RS-232 that was optically isolated between the 
teleprinter and computer.

73 Magazines, back in the early 1980s were full of great ideas and projects like that. It's a 
great pity that there is nothing quite like that any more for guys who just enjoy 
homebrewing and experimenting without having a BSc in Computer Science or BSEE.

Let us know how it goes!

Bry, AF4K

RYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRY


On 19 Oct 2012 at 15:59, Keith Densmore wrote:

> Greetings,
> I am not much experienced in running 220 volt lines so this leads to
> a question.
> I have aquired a German teleprinter which needs 220-240 VAC at 40 to
> 70 Hz. 150 Watts.
> 
> The German plug is 3 prongs 230-- neutral --- ground.
> As I understand it,  the 240 over here is 120-neutral-120 ground.
> Can I use the house current to power this machine or should I use a
> 120 volt stepped up to 230 through a transformer? The cycles are not
> a problems, the German unit will work on 60 HZ.
> Thanks,
>  better to ask than blow up something, hi.
> 
> 73,
> Keith
> 
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