A warning about blade fuses.
- Thread starter Otter
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elton
Well-Known Member
But you were taught basic electrical theory, such as v=ir and P=iv, surely?
LittleSister
Well-Known Member
When I were at school, v=iiiii, and P hadn't been invented so we had to use d! ;-)
elton
Well-Known Member
Ohm's Law was published in 1827, so I'd expect everyone would be familiar with it by now.
PabloPicasso
Well-Known Member
Ok I just googled "was does a canbus do" and the answer in Wikipedia is IT impenetrable gobbledygook. All about languages and protocols. So can anyone give me a quick basic idea of its purpose?
Iliade
Well-Known Member
All this sounds to me like a good reason to have circuit breakers instead of fuses. Something stops working, go below and flick/push the obviously different breaker. Or am I missing something important, other than 100 new circuit breakers being possibly quite pricey? (Simplify...)
Duffers version: CAN Bus allows a cars (boats?) onboard microcomputers to control things like whether to allow more than a set amount of current down a wire. i.e., if there's a short, the CAN bus system will stop current to the faulty wire and usually let you know with a dashboard light. However, it means that 'normal' fault finding techniques may not work as the computer may set out to confuse you. Hence everyone having to take cars to the garage nowadays. Even fitting the 'wrong' sort of light bulb can get its knickers in a twist...
Duffers version: CAN Bus allows a cars (boats?) onboard microcomputers to control things like whether to allow more than a set amount of current down a wire. i.e., if there's a short, the CAN bus system will stop current to the faulty wire and usually let you know with a dashboard light. However, it means that 'normal' fault finding techniques may not work as the computer may set out to confuse you. Hence everyone having to take cars to the garage nowadays. Even fitting the 'wrong' sort of light bulb can get its knickers in a twist...
maxi77
Well-Known Member
Wow that makes you quite old as the valve was invented back in 1910
Otter
Well-Known Member
I didn't do electrcity at school. We didn't have enough to spare on experiments.
Rowana
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I did O level Physics in 1963, along with Maths, Applied Mechanics & Engineering Drawing.
I was amazed at what I still remembered when my youngest was doing Standard Grades 7 years ago!
nigelmercier
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We did valves in Physics at school, around 1969, then transistors.