Diode laser and electrical bill
Danh mục:
Tia laze
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2023-03-07
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John Trant
2023-03-08The website for this product specifies the 5.5 W output of the laser and also lists a 30 W electrical output, but it’s almost certainly referencing the power consumption or 30 Watts. Electricity is measured by kiloWatt hours and charged in the same manner. The rates local to us have recently been raised to US$0.14 per kWh. Yes, fourteen cents per kiloWatt hour. Let’s kick the number up a bit to twenty cents per kWh. The k is one thousand, which means you’d have to run the laser for 1000 / 30 or about 33 hours to use one kWh, or twenty cents.
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