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New EU Rules Will Limit Vacuum Cleaners To 1600W

thebigmacd Re:Do the math (338 comments)

You always want to be as close to the nominal voltage as possible to accommodate transient under- and over-voltage conditions.

about a month ago
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Google Offers a Million Bucks For a Better Inverter

thebigmacd Re:110 or 240v (260 comments)

It's pretty pointless to hook a neutral up to a delta-wired motor, code or no :D

3-phase 4-wire feeds are used all the time for commercial power here in Canada. Either 208V or 600V depending on what is required. Single phases are circuited off for 208V/120V or 347V single-phase feeds, respectively. A neutral conductor is definitely required for this application, yes. 208V single-phase circuits don't use a neutral, since they use two of three phases as if they were single phase. Their "split neutral" would be ~60V with respect to ground.

about 2 months ago
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Philips Ethernet-Powered Lighting Transmits Data To Mobile Devices Via Light

thebigmacd Re:PWM (104 comments)

Your "pure" DC likely isn't. DC power supplies for LEDs are generally switch-mode, and thus use PWM/PFM for voltage modulation.

about 3 months ago
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FCC Proposes $48,000 Fine To Man Jamming Cellphones On Florida Interstate

thebigmacd Re:Jammer was in car (427 comments)

Not really, illegal wireless transmissions are definitely reasonable cause. They are something that can be detected prior to searching the vehicle. And you can even attach a bode plot to the report, not just "I smelled something odd".

about 5 months ago
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NSA Hacked Huawei, Stole Source Code

thebigmacd Re:Wow !! (287 comments)

Uh...yeah...no

The lowest the Canadian dollar has ever been was 61.79 cents US.

about 6 months ago
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Linux May Succeed Windows XP As OS of Choice For ATMs

thebigmacd Re:ATMs? (367 comments)

When I go to a teller at my Credit Union, I just hand them my bank card, tell them what I want, and they key it in. Then I just sign the receipt when all transactions are done. No filling in of forms. No going only to my "home" branch for free service. I used to have to do those things...20 years ago.

about 6 months ago
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NSA Can Retrieve, Replay All Phone Calls From a Country From the Past 30 Days

thebigmacd Re:How? (320 comments)

Canada has one phone company, because the following are not Canadian phone companies: [/sarcasm]
Bell Aliant - Made up of MT&T, NewTel, NBTel and IslandTel
BabyTEL
Bell Canada
BoltonSmith
Brooke Telecom
Bruce Municipal Telephone Service
Chatr
CityWest
Cogeco
DMTS
Eastlink
Execulink Telecom
Fibernetics Corporation/Freephoneline.ca
Fido
Gosfield North Communications Co-op
Ice Wireless
Inline Communications
Iristel
Lynx Mobility
Manitoba Telecom Services/MTS Allstream
North Renfrew Telephone Company
NorthernTel
Northwestel
Novus
Ormuco
Ontera
Primus Canada
Quadro
Rogers Telecom
SaskTel
Shaw Communications
Sogetel
Start Communications
Télébec
TELUS - Made up of BCTel, AGT & ED Tel
TBayTel
Vidéotron
Wightman Telecom

about 6 months ago
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Canadian Government Trucking Generations of Scientific Data To the Dump

thebigmacd Re:Lots of smoke, little fire? (209 comments)

They ship to China via the Gulf of Mexico? Are there no ports in BC, Washington, Oregon, or California?

about 8 months ago
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Reverse Engineering a Bank's Security Token

thebigmacd Re:Do I care? (55 comments)

You are generally on the hook for fraudulent credit card charges under $50, with any provider.

about 9 months ago
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Jade Rabbit Spotted By American Eagle (LRO)

thebigmacd Re:Prey! (58 comments)

In Canada and the US it's generally called "the Man in the Moon".

about 9 months ago
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Some Londoners Cut Off As Failed Copper Thieves Take Fiber

thebigmacd Re:Copper Fever (184 comments)

Where I live (London, Ontario, Canada), scrap metal dealers will not buy wire which has been burned. You have to either manually strip the insulation off or sell it to them with insulation still on and get peanuts for it.

about 9 months ago
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Single-Atom Layer of Tin May Be a New Wonder Conductor

thebigmacd Re:100 percent efficiency? (126 comments)

If you don't have resistance, any capacitive or inductive effects will be 100% efficient, no?. The whole problem with induction and capacitance in transmission lines is it increases the overall power loss due to unused current flowing through resistive lines. Superconductivity eliminates that source of loss.

about 10 months ago
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EPA Makes Most Wood Stoves Illegal

thebigmacd Re:Good (1143 comments)

The parent post said apartment *owners*, not renters.

about 10 months ago
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Duke Univ. Device Converts Stray Wireless Energy Into Electricity For Charging

thebigmacd Re:Meaningless numbers (216 comments)

I'm sorry but voltage is not the speed of electrons. It is the difference in potential between two points. You can have voltage with absolutely no current. It is equivalent of pressure, not velocity.

about 10 months ago
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Toyota's Killer Firmware

thebigmacd Re:Technology is hard and dangerous (610 comments)

Drive-by-wire exists because of emissions regulations. The ECU precisely controls the position and rate of the throttle plate to optimise combustion during transient events. The current emissions regulations require strict control of combustion from the moment the first cylinder fires on cold start-up.

about a year ago

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