by elephant » 25/11/06, 19:04
in my opinion should be in your material:
relatively precise alternative ammeter, which is a little rarer than a multimeter: the problem is the heating of the shunt.
relatively accurate light meter in dim light (range 10 to 200 lux)
standard light source
standard charges
standard voltage source
alternating voltage regulator
in fact, the problem is the reproducibility of the results: if you test a bulb today, you must be sure that when you retest another bulb in 2 years, the measurements will be reliable, because you may have slammed your ammeter since then and the variations can vary in the range of 5 to 10%, especially in alternative.
in summary, you must check your devices before the measurements
you can get quite easily from electronic components dealers (sorry, I do not know the degree of isolation of your deep antenna) a multimeter with an RS232 socket, it costs around 80 euros
another big difficulty is the measurement of the luminous flux: in short, how to compare bulbs which do not have the same concentration of light, and there, I admit that I stall ...
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elephant Supreme Honorary éconologue PCQ ..... I'm too cautious, not rich enough and too lazy to really save the CO2!
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