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- Xref: sparky comp.sys.ibm.pc.hardware:34212 comp.sys.laptops:4816
- Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.laptops
- Path: sparky!uunet!mdisea!mitchell
- From: mitchell@mdd.comm.mot.com (Bill Mitchell)
- Subject: Re: Use 110V,60Hz equip at 100V,60Hz??
- Message-ID: <1992Dec26.172458.8038@mdd.comm.mot.com>
- Reply-To: mitchell@mdd.comm.mot.com (Bill Mitchell)
- Organization: Motorola, Mobile Data Division - Seattle, WA
- References: <1992Dec15.182150.1@camins.camosun.bc.ca> <1992Dec25.050312.8098@mydual.uucp>
- Date: Sat, 26 Dec 1992 17:24:58 GMT
- Lines: 59
-
- in comp.sys.laptops, olson%mydual.uucp@alliant.com said:
-
- >In article <1992Dec15.182150.1@camins.camosun.bc.ca> comptec91025@camins.camosun.bc.ca (Ian Hobday) writes:
- >> I will be travelling to Japan in early January for an extended stay. I
- >>will probably be taking a TI TM2000 notebook computer and Canon Bubblejet
- >>printer with me. Where I will be living (Osaka) the power is 100V, 60Hz.
- >>The equipment is designed for 110V, 60Hz. Is this going to cause any
- >>problems, either immediately, or over the long term?
- >
- >This is very machine dependent. IBM XT supplies work from 90-137 Vac and
- >47-63 Hz. Check the specifications for your portable.
-
- There should be a Specifications section in the manual somewhere, and
- it ought to give power requirements. Maybe not, though. The only
- Specs page I see in the manuals for my Zenith is in the Tech Ref
- manual, which I had to order separately at a cost of over $100.
-
- Laptops tend to be powered from an external power converter of some type
- which in turn plugs into the wall. The laptop manual may not include the
- specs on the external power converter, and it may have no separate manual.
-
- In my case, the Specs section of my $100 Tech Ref manual says
-
- Power Requirements AC adapter.charger:
-
- Input: 95 to 132 VAC, 48 to 64 Hz
- Output: 25 to 29 VDC, 30 W Continuous, 500 mVpp max ripple
-
- And the case of the Zenith Data Systems AC Adapter itself is embossed
-
- Input 105-125/210-240 VAC, 1.4/0.7A, 60/50 Hz
- Output 27V = 0.9A : 32V = 0.1A OR 27V = 0.1A : 32V = 1.5A
-
- I could call my local ZDS dealer and ask, but he's unlikely to have better
- information than I have. I could call Zenith direct, and might get some
- information I thought I could trust if I spent a day or so on the phone.
- Then again, I might get no information, or bad information.
-
- What I probably would do is either
-
- 1. Measure the voltages at the input to the laptop in operation
- at whatever voltage came out of the wall in the U.S. at the time
- of my test; then repeat that at 100V, 95V, 90V; then decide
- whether I thought it would work.
-
- 2. Get a transformer which would boost the nominal 100V line voltage
- (likely to be somewhere betwixt 90 and 110 at any given time, probably)
- up to the 105-125V range, and add it to the collection of stuff I
- lug around with my laptop.
-
- 3. Just try it and hope it works. I'd expect that it probably would
- work, and would probably not die a nasty death if the voltage turned
- out to be too low. I could probably get a step-up transformer in
- Japan if need be.
-
-
- --
- mitchell@mdd.comm.mot.com (Bill Mitchell)
-
-