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Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

1083.0. "110 volts 60 Hz ----> 220 volts 50 Hz" by LEDS::PIM (As you read ...... the world shrinks) Mon Jan 18 1988 11:05

    
    I'm looking for advice on how to best go from 110 volts 60 Hz
    to 220 volts 50 Hz, as will be going back to Germany soon.
    
    Has anybody had this problem before ? How did they solve it ?
T.RTitleUserPersonal
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1083.1Radio Shack converterLOWLIF::DAVISThat's not a BUG, it's a FEATURE!Mon Jan 18 1988 11:434
	This may not be the answer you are looking for, but I believe that
Radio Shack sells a converter that you can plug into a wall outlet for use
with all appliances.
							...richard
1083.2220 to 110FS01::BERGMANSTue Jan 19 1988 03:069
    You need a 220 to 110 transformer, and you should not worry about
    the frequency. I do not recommned a converter because they are
    typically choppers and could affect the working of power supply.
    
    You would typically find transformers in electronic shops in Germany.
    
    Be also aware that if you use a TV modulator, the TV standards
    are not the same in Germany. They have PAL standard rather than
    NTSC                                                  
1083.32002 monitor ?LEDS::PIMAs you read ...... the world shrinksTue Jan 19 1988 08:2313
    Yes it was the frequency I was worried about:
    
    I notice that the 2002 monitor that I have just specifies 120 volts
    +/- 10% but supprisingly it does not say anything about frequency.
    Most equipment in Europe is marked 110/220 volts 50/60Hz and has
    a screwdriver switch for switching between 110 and 220. This means
    that the only additional equipment needed is a power cable.
    
    I don't understand why manufactures don't do this with all equipment.
    
    Anyway, Thanks for the replies, I'm sure I'll pick up a trafo pretty
    quickly.
    
1083.4Ask the RomansYIPPEE::GOULNIKSigale et la fourmiFri Jan 22 1988 07:145
	Have a look at the Valbonne Conference (BISTRO::VALBONNE),
	Note 4. (34 replies) will give you a very detailed picture
	of the European 220VAC problem when relocating from the US.
Iv
1083.5Maby some useful hintsUTRTSC::VISWed Feb 10 1988 05:5426
    I've had the same problem too. It turned out that it's not 
    such a problem. The 10Hz difference is no problem at all.
    Just buy a 'strong enough' travo. Thats all you need.
    
    I bought a too weak travo at first. I bought it for the computer
    and later on I bought a 110V monitor. I connected it to the same
    travo. The travo first of all gets pretty hot. Secondly my fan
    started making a louzy noise. I can tell you, thats irritating.
    Some time ago I bought a stronger travo .... and the noise
    disappeared.                    
    
    If you don't have a monitor, buy one before you return to Europe.
    It will save you from a lot of problems. There's no way (that I
    know of) to get a NTSC monitor with a European power supply.
    
    There's a third problem, you should keep in mind.
    Some graghics software that I purchased in Europe just 
    doesn't fit on my screen. I'm not saying all. Don't ask me why?!
    For example the game 'Pinball Wizard' doesn'f fit. It does run but
    if you need the mouse cursor in a corner (to click) thats not on
    the screen, your out of luck.
    Don't get worried too much because as far as I know this problem
    counts for a minor set of software (purchased in Europe)
    
    							Good luck
    							Eric Vis. 
1083.6PAL Amigas have more scanlinesTLE::INSTALLRandy MeyersWed Feb 10 1988 11:2110
Re: .5

>    Some graghics software that I purchased in Europe just 
>    doesn't fit on my screen. I'm not saying all. Don't ask me why?!

European Amigas (PAL as opposed to NTSC) have more scan lines.  A
developer is supposed to check gfxbase to get the size of the screen,
but some of them don't.  So American's running European software have
some of the image go off the bottom of the screen, and Europeans running
American software don't have the full screen used.
1083.7Is it fully crystal controlled ?LEDS::PIMIvan Pim, mail-stop NKS1-1/E3, DTN 291-7470Wed Feb 10 1988 15:179
    
    I can handle the transformer all right and I can live with the resized
    graphics. There is just one question which comes to mind: Does the
    monitor rely on the line frequency or is it all crystal controlled.
    I'm hearing some strange tales about 10 Hz flicker ......
    I have the 2002 montior.
    
    - Ivan.
    
1083.8BAGELS::BRANNONDave BrannonThu Feb 11 1988 18:1710
    re: .5
    
    did you say "Pinball Wizard"?
    
    Finally an Amiga version of Pinball!!!  (a previous note long ago
                                              was hunting for one)
    
    What company makes it?
    
    -dave
1083.9"Pinball Wizzard" writerUTRTSC::VISTue Feb 16 1988 03:1616
    
    Re: .8
    
    As you could read in note .5 the screen was "too small". Because
    of that I erased the disk..... I had no docs because, well...
    You probably know why. 
    
    I called the guy from who I got the game last night.
    The only thing he could tell me was:
    
    The guy who wrote the game is : Frank Neuhaus.
    It's a German guy and works in Germany too.
    I know that's not much of an answer to your question, but mayby
    there are some Germans out there who have hered of this guy ?
    
    Eric.
1083.10DCC::JAERVINENImmanuel Kant, but Genghis Khan.Tue Mar 01 1988 04:217
    re .8: I assume it's Kingsoft (but I'm not sure). It's a German
    company, they offer a wide selection of games for rather reasonable
    prices (I think Emerald Mine is by them too).
    
    They advertise in all German Amiga magazines saying they want to
    *buy* games.
    
1083.11DCC::JAERVINENImmanuel Kant, but Genghis Khan.Tue Mar 01 1988 04:238
    P.S.	Kingsoft
    		F. Sch�fer
    		Schnackebusch 4
    		5106 Roetgen
    		Germany
    
    tel.	+49 2408 5119
    
1083.12How about 240v 50Hz --> 110v 60Hz?SMAUG::GRAHAMOh well, anything for a weird life!Wed Sep 26 1990 09:4715
Just to revive this old topic, I have recently moved to the States from England,
and I brought with me a 240v, PAL Amiga plus monitor which I have been trying to
get working over here. I have managed to get hold of a large-ish step-up
transformer, and get it wired up right, BUT, when I switch the Ami on, the
screen just rolls violently and unreadably.

So, can any of you Amiga wizards out there confirm (or deny) that the line
frequency is used somewhere in the video circuitry, and if so what (if anything)
I can do about it?

Thanks,
Simon

PS: I have tried fiddling with the external vertical hold adjustment on the
    monitor, but this made virtually no difference
1083.13WHAMMY::SPODARYKElvis has just left the building!Wed Sep 26 1990 11:3846
Hi Simon,

     I saw this on the 'net last night.  The jumper makes sense, but 
hopefully you won't have to swap any chips...

Article 66428 of comp.sys.amiga:
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From: [email protected] (Chee Lee)
Newsgroups: comp.sys.amiga
Subject: Re: Is it possible to change NTSC into PAL?
Message-ID: <[email protected]>
Date: 6 Sep 90 23:41:03 GMT
References: <[email protected]>
Organization: Carnegie Mellon, Pittsburgh, PA
Lines: 27
In-Reply-To: <[email protected]>

>> Is it possible to change a NTSC-amiga (american version) into PAL?
>> And what about the power supply?  Can it be changed?  (From 60 
>> to 50 Hz)
>>
>> -Frank Tore Johansen
> 
>	Yes it is possible.  **>>On the Amiga 2000<<**, there is an
>internal jumper on the power supply that allow you to select the
>Amirican or the European standard.
> 
>	Which monitor do you own?  The C= 1081 will aotomatically
>adjust itself to the PAL or NTSC standard.  You can also manually
>change the vertical size of the C= 1080 by an internal control.
> 
>	You also have to change two things on your 2000
>motherboard.  The Agnus (8361) chip (I don't know about the fat
>agnus), and the system clock.  NTSC' clock run at 28,63636 MHz and
>the PAL' clock run at 28,37516.
> 
>	You should contack your C= service center for doing the
>chip swap.  They will inform you about the part numbers of the
>cristal and the Agnus(FatAgnus) chips.

How about the A500?  Can it be done that way too?

William
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