S
steve
- Jan 1, 1970
- 0
I was reading a web site that has information about light bulbs. Here
is a quote relating to a question I wanted to ask.
-- Quote ---
"Reducing the voltage applied to a light bulb will reduce the filament
temperature, resulting in a dramatic increase in life expectancy.
One device sold to do this is an ordinary silicon diode built into a
cap that is made to stick to the base of a light bulb. A diode lets
current through in only one direction, causing the bulb to get power
only 50 percent of the time if it is operated on AC. This effectively
reduces the applied voltage by about 30 percent. (Reducing the voltage
to its original value times the square root of .5 results in the same
power consumption as applying full voltage half the time.) The life
expectancy is increased very dramatically. However, the power
consumption is reduced by about 40 percent (not 50 since the cooler
filament has less resistance) and light output is reduced by reduced by
about 70 percent (cooler filaments are less efficient at radiating
visible light)."
---
My question is really just a just wondering kind of question. I have no
interest in doing this.
I have seen the type of "Savings " devices written about above. Would
the same thing be achieved if I simply took a diode of the proper
rating and put it in line in one of the wires running to an
incandescent light bulb?
Thanks
is a quote relating to a question I wanted to ask.
-- Quote ---
"Reducing the voltage applied to a light bulb will reduce the filament
temperature, resulting in a dramatic increase in life expectancy.
One device sold to do this is an ordinary silicon diode built into a
cap that is made to stick to the base of a light bulb. A diode lets
current through in only one direction, causing the bulb to get power
only 50 percent of the time if it is operated on AC. This effectively
reduces the applied voltage by about 30 percent. (Reducing the voltage
to its original value times the square root of .5 results in the same
power consumption as applying full voltage half the time.) The life
expectancy is increased very dramatically. However, the power
consumption is reduced by about 40 percent (not 50 since the cooler
filament has less resistance) and light output is reduced by reduced by
about 70 percent (cooler filaments are less efficient at radiating
visible light)."
---
My question is really just a just wondering kind of question. I have no
interest in doing this.
I have seen the type of "Savings " devices written about above. Would
the same thing be achieved if I simply took a diode of the proper
rating and put it in line in one of the wires running to an
incandescent light bulb?
Thanks