Getting the green light
Source:
New Scientist
OT ALL "energy efficient" light bulbs are created equal, according to a report carried out by independent energy consultants. Tests have shown that some use more current (amps) than others. It appears the fluorescent light bulbs promoted by David Bellamy on behalf of Electricorp Marketing are in the "less than totally green’ category. Chalkline Energy Consultants, a UK-based company, have singled out bulbs with electro-magnetic ballasts as the worst culprits — the type that David Bellamy is touting. These bulbs have lower power consumption than incandescents but their power factors are between 0.23 and 0.5. Ideally an appliance should have a power factor of 1, meaning that it is 100 percent efficient at converting mains power to light. On the other hand, suppliers have advised that bulbs recently advertised through Forest & Bird have a higher power factor of 0.95 because they convert the mains current using an electronic circuit rather than an electromagnetic ballast. #
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https://paperspast.natlib.govt.nz/periodicals/FORBI19910801.2.6.6
Bibliographic details
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Forest and Bird, Volume 22, Issue 3, 1 August 1991, Page 4
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160Getting the green light Forest and Bird, Volume 22, Issue 3, 1 August 1991, Page 4
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