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- Path: sparky!uunet!stanford.edu!rutgers!cmcl2!deshaw!jcl
- From: jcl@deshaw.com (Jonathan Laventhol)
- Newsgroups: comp.sys.mac.hardware
- Subject: Apple's Power Supplies (GUIDE)
- Keywords: PSU, 220V, 240V, 110V
- Message-ID: <1992Jul25.000444.24169@deshaw>
- Date: 25 Jul 92 00:04:44 GMT
- Sender: news@deshaw.com
- Reply-To: jcl@deshaw.com (Jonathan Laventhol)
- Organization: D. E. Shaw & Co.
- Lines: 175
- Originator: jcl@shaw2
-
-
-
- **************************
- * *
- * Apple's Power Supplies *
- * *
- **************************
-
- Everything you wanted to know (and more) about Apple's Power
- Supply Units.
-
- Lots of people (me in particular) want to know whether Apple
- equipment bought in one part of the world will work in another.
- Here's a useful pile of information, gleaned from various
- places. Use it as you see fit: I make no claims to accuracy or
- anything else.
-
- CONTRIBUTIONS SOLICITED!
-
-
-
- 1) Which Countries Have What
- ----------------------------
-
- I have measured:
- United States 110 Volt, 60 Hertz
- United Kingdom 240 Volt, 50 Hertz
-
- I believe:
- France 220 Volt, 50 Hertz, but also others
- Spain 220 Volt, 50 Hertz, but also others
-
- I am told that:
- Japan 110 Volt, 60 Hertz
- Australia 240 Volt, 50 Hertz
-
- I am given to understand that the US and UK voltages are the
- only services you will find in those countries.
-
- Plugs and sockets: Every country has its own shape of plug and
- socket. Some countries (UK) have fuses in every plug; some
- countries (US) have a lot of non-grounded wiring.
-
-
- 2) Apple's Products
- -------------------
-
- People are forever saying things like "All new Macintoshes just
- plug in". Well, yes and no.
-
-
- Here's the list, taken from all the available information
- sheets from Apple's Fax Facts service on 920428, IN THE UNITED
- STATES!
-
- You will note that some products are marked as only working
- with US voltages. Obviously Apple makes different versions:
- the information here is the information available in the United
- States.
-
-
-
- Product Note VAC Hertz Watts
- ------- ---- --- ----- -----
- Macintosh Classic A- 120 nom 47-63 100
- Macitosh LC II AB 90-240 47-63 50
- Macintosh IIsi A- 120 nom 47-63 100
- Macintosh IIci AB 100-240 50-60 90
- Macintosh IIfx AB 100-240 48-62 230
- Apple II GS A- 107-132 50-60 60
- Apple IIe A- 95-127 60 60
- Macintosh Classic II A- 120 nom 47-63 100
- Macintosh PowerBook 100 AB 110-220 50-60 N/A
- Macintosh PowerBook 140 AB 110-220 50-60 N/A
- Macintosh PowerBook 170 AB 110-220 50-60 N/A
- PB Fax/Data Modem 1 AB 110-220 50-60 N/A
- Macintosh Quadra 700 AB 100-240 50-60 50
- Macintosh Quadra 900 AB 100-240 50-60 303
- Macintosh 12" Monochrome disp 2 AB 90-132/190-270 47-63 30
- Macintosh Portrait Disp (15") AB 90-270 47-63 75
- AppleColor RBG Monitor (12") A- 108-132 50-60 90
- AppleColor High-Res RGB (13") AB 85-270 47-63 90
- 21" Color Monitor 3 AB 85-135/170-270 47-63 165
- Macintosh 12" RGB Display A- 100-120 50-60 90
- Macintosh 16" Color Display AB 90-270 47-63 130
- Apple One Scanner A- 110 +/-10% 58-62 45
- ImageWriter II A- 90-132 50/60 N/A
- StyleWriter (US/Japan) A- 100-120 48-62 23
- StyleWriter (Europe/Australia) -B 220-240 48-62 25@220V
- Personal LW LS (USA 110V) 4 A- N/A
- Personal LW NT (US/Japan) A- 100-115 50-60 600
- Personal LW NT (Eur/Australia) -B 220-240 50-60 550 @220V
- LaserWriter IIf (US/Japan) A- 90-126 50-60 900 @115V
- LaserWriter IIf (Eur/Australia) -B 198-264 50 880 @240V
- LaserWriter IIg (US/Japan) A- 90-126 50-60 900 @115V
- LaserWriter IIg (Eur/Australia) -B 198-264 50 880 @240V
- Personal LW NTR (US/Japan) A- 110-115 50-60 600 @115
- Personal LW NTR (Eur/Austr) -B 220-240 50-60 550 @220V
- AppleOne Scanner for Windows A- 110 +/-10% 58-62 45
- AppleCD 150 5 AB 100-240 50-60 0.24A
-
- A) Alleged to work in_A_merica
- B) Alleged to work in _B_ritan
-
- 1) It really plugs into the mains? It says it fits inside the
- PowerBook!
-
- 2) It says: "90-132 and 190-270". My understanding is that
- it has a switch on the back.
-
- 3) It says: "85-135 or 170-270". My understanding is that it
- has a switch on the back.
-
- 4) No power given, but the product is annotated "USA 110V" in
- its part number.
-
- 5) 0.24A should use 25W (100V) or 60W (240V) but don't take my
- word for it.
-
- 3) Short Lecture on AC Voltages
- -------------------------------
-
- The 'mains' power (as we call it in England) is, in domestic
- circumstances, single-phase AC: it wobbles up and down, at a
- certain rate. We measure the frequency of how fast it changes,
- and the (average) height it reaches. It's supposed to be a
- sine wave, so a graph of voltage against time looks like this:
-
-
-
- |<------period--------->|
- *** *** ---
- ** ** ** ** ^
- * * * * peak
- * * * * v
- +-----------+-----------+-----------+-----------+----------
- * * * *
- * * * *
- ** ** ** **
- *** ***
-
- The frequency is 1/period. The average voltage is measured
- according to a scheme call Root Mean Square, which (just
- for interest) is peak/sqrt(2).
-
- The only values anybody ever uses (electronic engineers apart)
- are the frequency and RMS voltage.
-
- You may also be interested in the maximum power the thing
- takes, if you're adding up how big to make your fusebox
- (circuit breakers).
-
- Finally, you might be interested to know that the voltage will
- change and fluctuate (and some countries' power generators will
- do this to save money: take it down a few percent). But
- usually the frequency is really accurate.
-
-
- ----------------------------------------------------------------
-
- Enjoy!
- Corrections and further information requested: especially from
- EUROPEANS! Also, What about SE/30s and other equipment not in
- the current product line but still very much in use.
-
- Email preferred.
-
- J.
-
- ---------------------
- Jonathan Laventhol
- Systems Administrator
- <jcl@deshaw.com>
- D. E. Shaw & Co.
- ---------------------
-