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| Measuring A Car battery |
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| cs.dk:
Diesel glow-plugs are also cheap power resistors. |
| jmaja:
Amazing! I had never even heard of a sealed beam light before. My first car was made in 1973 and it had H4 halogens. Some even older cars and motorcycles had changable non-halogen bulbs. I have not known about headlights that must be changed as a complete unit instead of changing just a bulb. Has these ever been used in Europe? Sounds like a stupid idea and I learned today they were compulsory until 1983 in the US. All imported cars had to change from Hx to sealed bea |
| GreyWoolfe:
My 1970 Datsun 510 and 1978 Chevy Nova had sealed beam headlights. Fun to aim to pass inspections. Find a blank wall, park the car about 10 feet away, adjust height of first bulb to about knee level and then adjust 2nd bulb to be even with the first. Never failed for lights. |
| IDEngineer:
--- Quote from: jmaja on May 03, 2019, 06:47:00 am ---Amazing! I had never even heard of a sealed beam light before. I learned today they were compulsory until 1983 in the US. --- End quote --- Yes, I thought it was crazy when the USA kept requiring them for a while. Well before 1983 there were better alternatives. I believe for a while they required at least one headlight to be sealed beam, and I recall seeing cars driving along whose headlights were obviously different in color temperature, intensity, etc. Crazy times. That's the "logic" of government regulation for you. Not a whole lot different from requiring perfectly good sealed beams to be swapped out for "something else". :-DD |
| HighVoltage:
I have used 24V H7 light bulbs in parallel to drain 100A from a 12V car battery to test a charging system. Using 24V light bulbs on 12V has the benefits: last longer, don't get as hot and not so bright. And the current draw stays pretty stable over time. |
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