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Ca LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37

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Free Shipping CAD$38.37 LITEON 19v 4.74a Laptop Ac Adapter For Notebook, Computer, LCD / LED Monitor, TV, Bluetooth Wireless Speaker, Ventilator, Ultrabook, ToughBook, Gaming PC, Tablet, Serve...,Genuine Or Replacement LITEON 19v 4.74a Ac Adapter Is In Stock And 1 Year Warranty

Image Output Volt Current Max Power Tip Size Tip Note Price Adapter Code
Original / Genuine LITEON 19v 4.74a AC Adapter --- LITEON19V4.74A90W-5.5x2.5mm 19V 4.74A 90W 5.5 x 2.5mm CAD$ 38.37LITEON19V4.74A90W-5.5x2.5mm
Original / Genuine LITEON 19v 4.74a AC Adapter --- LITEON19V4.74A90W-4PIN-LR 19V 4.74A 90W 4PIN L+ R- CAD$ 47.18LITEON19V4.74A90W-4PIN-LR
Original / Genuine LITEON 19v 4.74a AC Adapter --- LITEON19V4.74A90W-4PIN 19V 4.74A 90W 4PINmm CAD$ 48.17LITEON19V4.74A90W-4PIN
Original / Genuine LITEON 19v 4.74a AC Adapter --- LITEON19V4.74A90W-6.5x4.0mm 19V 4.74A 90W 6.5 x 4.0mm CAD$ 35.99LITEON19V4.74A90W-6.5x4.0mm
Original / Genuine LITEON 19v 4.74a AC Adapter --- LITEON19V4.74A90W-4.0x1.7mm 19V 4.74A 90W 4.0 x 1.7mm CAD$ 47.98LITEON19V4.74A90W-4.0x1.7mm
Original / Genuine LITEON 19v 4.74a AC Adapter --- LITEON19V4.74A90W-5.5x1.7mm 19V 4.74A 90W 5.5 x 1.7mm CAD$ 38.97LITEON19V4.74A90W-5.5x1.7mm
Original / Genuine LITEON 19v 4.74a AC Adapter --- LITEON19V4.74A90W-3.0x1.0mm 19V 4.74A 90W 3.0 x 1.0mm CAD$ 50.17LITEON19V4.74A90W-3.0x1.0mm
Original / Genuine LITEON 19v 4.74a AC Adapter --- LITEON19V4.74A90W-2PINS-PA490088 19V 4.74A 90W Special 2 Pins CAD$ 55.97LITEON19V4.74A90W-2PINS-PA490088
Original / Genuine LITEON 19v 4.74a AC Adapter --- LITEON19V4.74A90W-5.5x1.7mm-B 19V 4.74A 90W 5.5 x 1.7mm For Acer CAD$ 32.88LITEON19V4.74A90W-5.5x1.7mm-B

Buy Ca LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37 in Canada Toronto, CALGARY, Montreal, Ottawa, Edmonton, MISSISSAUGA, Vancouver, Winnipeg, Laval, QUEBEC, London, Victoria, Markham, Brampton, Oakville, Gatineau, Richmond, Hill, Surrey, Scarborough, Kitchener, Burlington, Hamilton, Saskatoon, North York, Waterloo, Windsor, Milton, Burnaby, Oshawa, Richmond, Guelph, Regina, North Vancouver, Thornhill, Sherbrooke, Kingston, Coquitlam, Halifax, Etobicoke, WHITBY, CAMBRIDGE, Kelowna, Kanata, Barrie, Nanaimo...

This item will be shipped by Canada Post( Canada Post Default )

LITEON 19V 4.74A  Notebook ac adapter, LITEON19V4.74A90W-5.5x2.5mmCa LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37, 19V, 4.74A , LITEON19V4.74A90W-5.5x2.5mm 1 Year Warranty Quality inspection ok

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Package Include: 1 AC adapter + 1 CA Power Cord ( Default ) Free Shipping In CA

Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-5.5x2.5mm

Adapter Code:LITEON19V4.74A90W-5.5x2.5mm
Model:LITEON 19v 4.74a
DC Out Put: 19V
Out Put Current: 4.74A
Max Power: 90W
Adapter Weight: 270g
Size( L x W x H ): 128x50x31mm
Original: Yes
Tip Size: 5.5 x 2.5mm
Quantity2-45-910-1920-4950+
Discount5%8%10%12%15%
  • In Stock
  • Original Price: CAD$ 48.57
  • Christmas Price:
    CAD$ 38.37
    ( Update: Mar 2024 )
  • You save: CAD$ 10.20
  • Please make sure that the adapter's interface specifications are correct when purchasing.

Machine Model:*
Qty:


( Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-5.5x2.5mm. 3-11 days free shipping in Canada. )
Zahlung Canada LITEON 19V 4.74A  AC/DC adapter LITEON19V4.74A90W-5.5x2.5mm
Fit Laptop (Machine) Model:
Satellite M65-S9065, Satellite M65-SP811, Satellite 1115-S107, Satellite 1135-S1551, Satellite 1135-S1553, Satellite 1135-S1554, portable A105-S101, [ portable A105-S101x ac adapter ], portable A105-S171, portable A105-S171x, portable A105-S2xxx, portable A105-S271, portable A105-S271x, portable A105-S361, portable A105-S361x, Satellite M60, Satellite M65, Satellite 1100-S101, Satellite 1110, Satellite 1115, Satellite 1115-S104, [ Satellite 1130 ac adapter ], Satellite 1135, Satellite 1135-S1552, Satellite 1905-S801, Satellite 1950, Satellite 1955, Satellite 2430, Satellite 2430-SB, Satellite 2435, Satellite 2435-S256 series, Satellite A100, Satellite A100-05R010, [ Satellite A100-016004 ac adapter ], Satellite A100-03501N, Satellite A100-046004, Satellite A100-151, Satellite A100-153, Satellite A100-155, Satellite A100-158, Satellite A100-159, [ Satellite A100-161 ac adapter ], Satellite A100-163, Satellite A100-165, Satellite A100-166, Satellite A100-168, Satellite A100-169, Satellite A100-170, Satellite A100-175, [ Satellite A100-181 ac adapter ], Satellite A100-192, Satellite A100-193, Satellite A100-212, Satellite A100-218, Satellite A100-220, [ Satellite A100-232 ac adapter ], Satellite A100-233, Satellite A100-234, Satellite A100-250, Satellite A100-252, Satellite A100-253, [ Satellite A100-270 ac adapter ], Satellite A100-500, Satellite A100-508, Satellite A100-510, Satellite A100-522, Satellite A100-523, Satellite A100-528, Satellite A100-529, Satellite A100-534, Satellite A100-551, Satellite A100-JH2, Satellite A100-LE1, [ Satellite A100-LE4 ac adapter ], Satellite A100-LE6, Satellite A100-S2211TD, Satellite A100-S2311TD, Satellite A100-S8111TD, Satellite A100-ST2311, Satellite A100-ST3211.

detail

This item will be shipped by Canada Post( Canada Post Default )

LITEON 19V 4.74A  Notebook ac adapter, LITEON19V4.74A90W-4PIN-LRCa LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37, 19V, 4.74A , LITEON19V4.74A90W-4PIN-LR 1 Year Warranty Quality inspection ok

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Package Include: 1 AC adapter + 1 CA Power Cord ( Default ) Free Shipping In CA

Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-4PIN-LR

Adapter Code:LITEON19V4.74A90W-4PIN-LR
Model:LITEON 19v 4.74a
Ac InPut: 100-240V-1.4A 50/60Hz
DC Out Put: 19V
Out Put Current: 4.74A
Max Power: 90W
Adapter Weight: 405g
Original: Yes
Tip Note: 4PIN L+ R-
Quantity2-45-910-1920-4950+
Discount5%8%10%12%15%
  • In Stock
  • Original Price: CAD$ 59.72
  • Christmas Price:
    CAD$ 47.18
    ( Update: Mar 2024 )
  • You save: CAD$ 12.54
  • Please make sure that the adapter's interface specifications are correct when purchasing.

Machine Model:*
Qty:


( Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-4PIN-LR. 3-11 days free shipping in Canada. )
Zahlung Canada LITEON 19V 4.74A  AC/DC adapter LITEON19V4.74A90W-4PIN-LR
This adapter can replace / compatiable follow adapter model:

detail

This item will be shipped by Canada Post( Canada Post Default )

LITEON 19V 4.74A  Notebook ac adapter, LITEON19V4.74A90W-4PINCa LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37, 19V, 4.74A , LITEON19V4.74A90W-4PIN 1 Year Warranty Quality inspection ok

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Package Include: 1 AC adapter + 1 CA Power Cord ( Default ) Free Shipping In CA

Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-4PIN

Adapter Code:LITEON19V4.74A90W-4PIN
Model:LITEON 19v 4.74a
Ac InPut: 100-240V 50-60Hz 1.5A
DC Out Put: 19V
Out Put Current: 4.74A
Max Power: 90W
Adapter Weight: 475g
Size( L x W x H ): 132.60 x 58.00 x 30.10mm
Original: Yes
Tip Size: 4PINmm
Adapter Note: Note: Up Pin is Positive, Ground Pin is Negistive
Quantity2-45-910-1920-4950+
Discount5%8%10%12%15%
  • In Stock
  • Original Price: CAD$ 60.97
  • Christmas Price:
    CAD$ 48.17
    ( Update: Mar 2024 )
  • You save: CAD$ 12.80
  • Please make sure that the adapter's interface specifications are correct when purchasing.

Machine Model:*
Qty:


( Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-4PIN. 3-11 days free shipping in Canada. )
Zahlung Canada LITEON 19V 4.74A  AC/DC adapter LITEON19V4.74A90W-4PIN
This adapter can replace / compatiable follow adapter model:

detail

This item will be shipped by Canada Post( Canada Post Default )

LITEON 19V 4.74A  Notebook ac adapter, LITEON19V4.74A90W-6.5x4.0mmCa LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37, 19V, 4.74A , LITEON19V4.74A90W-6.5x4.0mm 1 Year Warranty Quality inspection ok

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Package Include: 1 AC adapter + 1 CA Power Cord ( Default ) Free Shipping In CA

Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-6.5x4.0mm

Adapter Code:LITEON19V4.74A90W-6.5x4.0mm
Model:LITEON 19v 4.74a
Ac InPut: 100-240V~50-60Hz 1.5A(1.5A)
DC Out Put: 19V
Out Put Current: 4.74A
Max Power: 90W
Adapter Weight: 330g
Size( L x W x H ): 126.50 x 50.10 x 30.80mm
Original: Yes
Tip Size: 6.5 x 4.0mm
Quantity2-45-910-1920-4950+
Discount5%8%10%12%15%
  • In Stock
  • Original Price: CAD$ 45.56
  • Christmas Price:
    CAD$ 35.99
    ( Update: Mar 2024 )
  • You save: CAD$ 9.57
  • Please make sure that the adapter's interface specifications are correct when purchasing.

Machine Model:*
Qty:


( Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-6.5x4.0mm. 3-11 days free shipping in Canada. )
Zahlung Canada LITEON 19V 4.74A  AC/DC adapter LITEON19V4.74A90W-6.5x4.0mm
This adapter can replace / compatiable follow adapter model:

Fit Laptop (Machine) Model:
RD400, RD405, LW60, [ LM60 ac adapter ], LS55, LW40, S19M90, R410, R510, R580, [ LGR41 ac adapter ], SB210-K.C2A6L, SB210-K.CBLIL, SB210-K.CBLKL, B510-K.CBA1L, SB510-N.C286L, SB510-U.C286L, [ SB510-U.C786L ac adapter ], SB510-X.CBA1L, S210-K.C26PK, S210-K.C26SK, S210-K.C27SK, S210-K.C284K, S210-K.C284KN, S210-K.C286K, [ S210-K.C286KN ac adapter ], S210-K.CBA1KN, S210-K.CP75K, S210-K.CP84K, S210-K.CP86K, S510-K.CP73K, S510-U.CP86K, S510-U.CP95K S510-X.CP94K, [ SB210-K.C286L ac adapter ], SB210-K.C287L, SB210-K.C288L.

detail

This item will be shipped by Canada Post( Canada Post Default )

LITEON 19V 4.74A  Notebook ac adapter, LITEON19V4.74A90W-4.0x1.7mmCa LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37, 19V, 4.74A , LITEON19V4.74A90W-4.0x1.7mm 1 Year Warranty Quality inspection ok

Ask a Question  Ask a Question       Share with friends  Share This Item
Package Include: 1 AC adapter + 1 CA Power Cord ( Default ) Free Shipping In CA

Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-4.0x1.7mm

Adapter Code:LITEON19V4.74A90W-4.0x1.7mm
Model:LITEON 19v 4.74a
Ac InPut: 100-240V 50-60Hz~1.5A
DC Out Put: 19V
Out Put Current: 4.74A
Max Power: 90W
Adapter Weight: 340g
Size( L x W x H ): 127 x 50.40 x 30.93mm
Original: Yes
Tip Size: 4.0 x 1.7mm
Quantity2-45-910-1920-4950+
Discount5%8%10%12%15%
  • In Stock
  • Original Price: CAD$ 60.73
  • Christmas Price:
    CAD$ 47.98
    ( Update: Mar 2024 )
  • You save: CAD$ 12.75
  • Please make sure that the adapter's interface specifications are correct when purchasing.

Machine Model:*
Qty:


( Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-4.0x1.7mm. 3-11 days free shipping in Canada. )
Zahlung Canada LITEON 19V 4.74A  AC/DC adapter LITEON19V4.74A90W-4.0x1.7mm
This adapter can replace / compatiable follow adapter model:

detail

This item will be shipped by Canada Post( Canada Post Default )

LITEON 19V 4.74A  Notebook ac adapter, LITEON19V4.74A90W-5.5x1.7mmCa LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37, 19V, 4.74A , LITEON19V4.74A90W-5.5x1.7mm 1 Year Warranty Quality inspection ok

Ask a Question  Ask a Question       Share with friends  Share This Item
Package Include: 1 AC adapter + 1 CA Power Cord ( Default ) Free Shipping In CA

Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-5.5x1.7mm

Adapter Code:LITEON19V4.74A90W-5.5x1.7mm
Model:LITEON 19v 4.74a
Ac InPut: 100-240v~ 50-60Hz 1.5A
DC Out Put: 19V
Out Put Current: 4.74A
Max Power: 90W
Adapter Weight: 240g
Original: Yes
Tip Size: 5.5 x 1.7mm
Quantity2-45-910-1920-4950+
Discount5%8%10%12%15%
  • In Stock
  • Original Price: CAD$ 49.33
  • Christmas Price:
    CAD$ 38.97
    ( Update: Mar 2024 )
  • You save: CAD$ 10.36
  • Please make sure that the adapter's interface specifications are correct when purchasing.

Machine Model:*
Qty:


( Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-5.5x1.7mm. 3-11 days free shipping in Canada. )
Zahlung Canada LITEON 19V 4.74A  AC/DC adapter LITEON19V4.74A90W-5.5x1.7mm
Fit Laptop (Machine) Model:
Aspire 3020, Aspire 5020, Aspire 5040, Aspire 5600, Aspire 5610, [ Aspire 5620 ac adapter ], Aspire 5650, Aspire 5670, Aspire 7110, Aspire 9410, Aspire 9500, Aspire 9510, TravelMate 2420, TravelMate 4200, TravelMate 4220, TravelMate 4400, TravelMate 4670, [ TravelMate 5610 ac adapter ], TravelMate 8200, Aspire 1350, TravelMate 2100, TravelMate 2200, [ TravelMate 2600 ac adapter ], TravelMate 2700, Travelmate C110, ASPIRE 1360, Aspire 1680, TravelMate 530, TravelMate a550, ASPIRE 5010, TRAVELMATE 3000, Ferrari 1004WTMi, Aspire 5510, Aspire 5500, Aspire 5100, Aspire 5000, Aspire 3610, [ Aspire 3600 ac adapter ], Aspire 3500, Aspire 3000, Aspire 2020, Aspire 2010, Aspire 2000, [ Aspire 1690 ac adapter ], Aspire 1650, Aspire 1640, Aspire 1410, ACERNOTE 367, EXTENSA 360 SERIES, EXTENSA 390 SERIES, [ EXTENSA 900 ac adapter ], ASPIRE 1410 SERIES, ASPIRE 1680 SERIES, ASPIRE 3000 SERIES, 7630G, EXTENSA 393, ACERNOTE 370, ACERNOTE 380, ASPIRE 5251-1513, ASPIRE 5735, [ ASPIRE 3810 ac adapter ], ASPIRE 4720G, ASPIRE 5315-2153, ASPIRE 5532, EXTENSA 4120, EXTENSA 5620, [ EXTENSA 4220 ac adapter ], ASPIRE 7720, ASPIRE 9300, ASPIRE 2420, ASPIRE 2920, ASPIRE 2930, ASPIRE 3050, ASPIRE 3100, ASPIRE 3660, [ ASPIRE 3670 ac adapter ], ASPIRE 3680, ASPIRE 4220, ASPIRE 4230, ASPIRE 4310.

detail

This item will be shipped by Canada Post( Canada Post Default )

LITEON 19V 4.74A  Notebook ac adapter, LITEON19V4.74A90W-3.0x1.0mmCa LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37, 19V, 4.74A , LITEON19V4.74A90W-3.0x1.0mm 1 Year Warranty Quality inspection ok

Ask a Question  Ask a Question       Share with friends  Share This Item
Package Include: 1 AC adapter + 1 CA Power Cord ( Default ) Free Shipping In CA

Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-3.0x1.0mm

Adapter Code:LITEON19V4.74A90W-3.0x1.0mm
Model:LITEON 19v 4.74a
Ac InPut: 100-240V~1.5A 50-60Hz
DC Out Put: 19V
Out Put Current: 4.74A
Max Power: 90W
Adapter Weight: 310g
Original: Yes
Tip Size: 3.0 x 1.0mm
Quantity2-45-910-1920-4950+
Discount5%8%10%12%15%
  • In Stock
  • Original Price: CAD$ 63.51
  • Christmas Price:
    CAD$ 50.17
    ( Update: Mar 2024 )
  • You save: CAD$ 13.34
  • Please make sure that the adapter's interface specifications are correct when purchasing.

Machine Model:*
Qty:


( Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-3.0x1.0mm. 3-11 days free shipping in Canada. )
Zahlung Canada LITEON 19V 4.74A  AC/DC adapter LITEON19V4.74A90W-3.0x1.0mm
This adapter can replace / compatiable follow adapter model:

Fit Laptop (Machine) Model:
A517-53-593A, [ SWIFT X SFX14-41G ac adapter ].

detail

This item will be shipped by Canada Post( Canada Post Default )

LITEON 19V 4.74A  Notebook ac adapter, LITEON19V4.74A90W-2PINS-PA490088Ca LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37, 19V, 4.74A , LITEON19V4.74A90W-2PINS-PA490088 1 Year Warranty Quality inspection ok

Ask a Question  Ask a Question       Share with friends  Share This Item
Package Include: 1 AC adapter + 1 CA Power Cord ( Default ) Free Shipping In CA

Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-2PINS-PA490088

Adapter Code:LITEON19V4.74A90W-2PINS-PA490088
Model:LITEON 19v 4.74a
Ac InPut: 100-240V~1.5A 50-60Hz
DC Out Put: 19V
Out Put Current: 4.74A
Max Power: 90W
Original: Yes
Tip Note: Special 2 Pins
Quantity2-45-910-1920-4950+
Discount5%8%10%12%15%
  • In Stock
  • Original Price: CAD$ 70.85
  • Christmas Price:
    CAD$ 55.97
    ( Update: Mar 2024 )
  • You save: CAD$ 14.88
  • Please make sure that the adapter's interface specifications are correct when purchasing.

Machine Model:*
Qty:


( Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-2PINS-PA490088. 3-11 days free shipping in Canada. )
Zahlung Canada LITEON 19V 4.74A  AC/DC adapter LITEON19V4.74A90W-2PINS-PA490088
This adapter can replace / compatiable follow adapter model:

detail

This item will be shipped by Canada Post( Canada Post Default )

LITEON 19V 4.74A  Notebook ac adapter, LITEON19V4.74A90W-5.5x1.7mm-BCa LITEON 19v 4.74a AC/DC Adapter, Power Supply CAD$38.37, 19V, 4.74A , LITEON19V4.74A90W-5.5x1.7mm-B 1 Year Warranty Quality inspection ok

Ask a Question  Ask a Question       Share with friends  Share This Item
Package Include: 1 AC adapter + 1 CA Power Cord ( Default ) Free Shipping In CA

Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-5.5x1.7mm-B

Adapter Code:LITEON19V4.74A90W-5.5x1.7mm-B
Model:LITEON 19v 4.74a
Ac InPut: 100-240V~1.5A 50-60Hz
DC Out Put: 19V
Out Put Current: 4.74A
Max Power: 90W
Adapter Weight: 320g
Original: Yes
Tip Size: 5.5 x 1.7mm
Tip Note: For Acer
Quantity2-45-910-1920-4950+
Discount5%8%10%12%15%
  • In Stock
  • Original Price: CAD$ 41.62
  • Christmas Price:
    CAD$ 32.88
    ( Update: Mar 2024 )
  • You save: CAD$ 8.74
  • Please make sure that the adapter's interface specifications are correct when purchasing.

Machine Model:*
Qty:


( Canada LITEON 19V 4.74A AC/DC adapter LITEON19V4.74A90W-5.5x1.7mm-B. 3-11 days free shipping in Canada. )
Zahlung Canada LITEON 19V 4.74A  AC/DC adapter LITEON19V4.74A90W-5.5x1.7mm-B
This adapter can replace / compatiable follow adapter model:

detail

Free shipping CAD$38.37 LITEON 19v 4.74a laptop ac adapter for notebook, computer, LCD / LED monitor, TV, bluetooth wireless speaker, ventilator, Ultrabook, ToughBook, gaming PC, tablet, serve...,Genuine or replacement LITEON 19v 4.74a ac adapter is in stock and 1 year warranty

Tags: LITEON 19v 4.74a AC Adapter, CA LITEON 19v 4.74a ac adapter, LITEON 19v 4.74a Laptop adapter, LITEON adapter

Question Related LITEON 19v 4.74a laptop ac Adapter ( From internet ):

When a computer power supply says voltage range 100-240, does it actually mean that it supports any voltage between 100v ~ 240v or does it mean either 120V or 240V? I only have 208V outlets available?

Yes, 100–240V means any voltage input within this range is acceptable. In most cases, it would not matter whether it is 50 Hz or 60 Hz supply.

Internally the computer power supply (called SMPS) converts incoming AC into DC supply. This DC voltage is then switched at high frequency, passed through a step down transformer and rectified again to produce 3.3V, 5V, 12V and other similar voltages.

The switcher needs only sufficient DC voltage and that is available in this AC range. Some low cost low- power wall adapters even work for “Universal range” i.e. 90V to 270V AC.

Why does Europe have a voltage of 220V, Japan has 100V, and North America has 110V? Is 220V better, more dangerous, or more efficient? Why doesn't the world converge into a more unified voltage?

Back in the early 20th century Edison experimented extensively to find the ‘sweet spot’ voltage for incandescent lamps. That is, most lumen’s vs filament life. He settled on 110 volts as the best compromise given the state of the art on filament design. 60 cycle AC was determined by Tesla as an appropriate speed for induction motors. Also, in 1890 it was decided that arc lights operated better using 60 cycles instead of lower frequencies. In the early 1970’s the electrical industry in the US raised the voltage to 120/240 volts, from 110/220 volts in the US. This was perhaps to accommodate expanding consumer use of electricity.

Higher voltages allow smaller wire sizes for the same power (watts) since watts is equal to volts times amps, one can double the voltage as in Europe, and draw half the amperage to get the same power. This allows smaller wire sizes.

The heating of wires is due to the numbers of factors, such as:

  1. The type of wire, such as copper or aluminum.
  2. The size of the wire, such as no. 12 or no. 14.
  3. The number of amperes flowing through the wire.
  4. The insulation covering the wire.
  5. Airflow around the wire.
  6. Ambient temperature.

Counter-intuitively the larger wire size is no. 12 rather than 14 in this example. No. 10 is larger then no. 12.

Higher voltages do not directly cause heating, higher amperage's do, with everything else being equal.

Therefore, by using higher voltages, one can reduce the wire size for the same amount of power (watts) being transmitted.

Another example is when transmitting large amounts of power over long distances as the power companies do, the voltages are extremely high, as in hundreds of thousands of volts which allows the power companies to use smaller cables. Since heat losses in conductors is mostly dependant on AMPERAGE, higher voltages reduce line losses. There are other factors, to consider, such as corona (ionization of the air) losses when using extremely high voltages. The air actually starts conducting electricity.

Europe, having watched electrical development in the US doubled the 110/220 volts to 220/240 to reduce wire size and thus wiring costs. Europe having observed the pros and cons of 60 cycles and 110/240 V current decided that 50 cycles and 220 V volts was more cost-effective than the US system. They also selected 50 cycles vs 60 cycles because generating 50 cycles current allowed slower prime mover speeds, such as diesel engine speeds, turbine speeds etc which would reduce wear on the machinery.

From a usage standpoint, there is little difference between 50 cycles vs 60 cycles. Six of one a half dozen of the other. However, lower frequencies require slightly more transformer iron so slightly heavier transformer sizes were required which apparently was offset by reduce wiring costs. Also, smaller wire sizes lower installation costs as smaller wire is easier to install.

Another factor when transmitting power over long distances as in the power grid, is that higher frequencies cause larger line losses due to increased effects of inductance and capacitance. At higher frequencies, there is the skin affect to consider. At 50 to 60 cycles skin affect has little effect on conductors.

Once one gets up to radio frequencies in the kilocycles range, skin affect begins to matter. Skin effect is due to Eddy currents in the cable which are caused by alternating current inductance, ‘pushing’ current flow toward the surface of the conductor, which effectively reduces the cross-sectional area of the conductor, which increases resistance.

Commercial airplanes use 400 cycles because the savings in weight on planes is important and smaller on board transformers and electrical equipment save weight. The size of transformers is inversely proportional to the frequency used. Therefore, higher frequency systems can use smaller, lighter transformers.

And, as others have said, once the infrastructure is in place configured for specific voltages and frequencies, the costs of changing from one standard to another is unnecessary and cost prohibitive.

240 volts is riskier to work with than 120 volts, because for a given resistance, such as the resistance of a human body, the amperage passing through ones body will be higher. The body is sensitive to current (amps) passing through it, especially across the heart. A sustained current of about 30 to 50 milliamps will kill most people, due to electrical interference of the hearts rhythm. People ask which is more dangerous AC or DC? AC interferes with the hearts rhythm and can causes the heart to go into ventricular fibrillation which if not immediately treated will cause death. High voltage warning signs imply that high voltage is what kills. Actually, amperage kills but voltage pushes the amps, so the high-voltage warnings really mean that the voltage is high enough to push enough amps to kill you. It doesn’t take much amperage across the chest to cause death 10 mA is often enough.

DC tends to cause muscles to seize onto the conductor so the victim cannot let go. The heating effects due to the resistance of the body is a large factor in DC shocks.

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