H
Homer J Simpson
- Jan 1, 1970
- 0
Can CFLs be reconfigured to run off a DC supply? Minimum voltage?
Can CFLs be reconfigured to run off a DC supply?
Minimum voltage?
Homer said:Can CFLs be reconfigured to run off a DC supply? Minimum voltage?
I suppose it depends on the CFL ballast design. I cut one open once. The
120 Vac line input drives a rectifier and a filtering cap. I'd guess
that one could feed 170 Vdc in at this point.
So the other way is to dump the electronics and add a fluo inverter /
driver I guess.
Phil Allison said:"Homer J Simpson"
** Did you want 12 volt DC operation ??
Then bloody say so - you pathetic jerk
http://www.unlimited-power.co.uk/low-voltage-lights-12v-dc-CFL.html
....... Phil
Please remember to take your psychosis medications before you post
anything, Phil.
Bob
He's a sad case, no? And he can't read : "Can CFLs be reconfigured to run
off a DC supply? Minimum voltage?"
Homer said:Can CFLs be reconfigured to run off a DC supply?
Yes.
Minimum voltage?
*Any* fluorexcent lamp can run off of DC; the problem is to firstHomer said:Can CFLs be reconfigured to run off a DC supply? Minimum voltage?
That is with an inverter AKA "ballast".Eeyore said:Homer J Simpson wrote:
Anything you like within reason. 12V DC versions exist.
Graham
Robert said:That is with an inverter AKA "ballast".
What i answered was relative to the bulb itself absent electronics.
*Any* fluorexcent lamp can run off of DC; the problem is to first strike
that arc, which takes high voltage.
When the arc is present, then it is wise to use current limiting so as
to not overheat the poor lamp; typical voltage drop is the first
ionizationpotential of mercury ~32V.
Robert Baer said:*Any* fluorexcent lamp can run off of DC; the problem is to first strike
that arc, which takes high voltage.
When the arc is present, then it is wise to use current limiting so as
to not overheat the poor lamp; typical voltage drop is the first
ionizationpotential of mercury ~32V.
I recall reading something about premature blackening at one end of the
"tube" and early failure if dc is used with fluoro's????
"Robbo"
** All modern CFLs use electronic ballasts - ie high frequency inverters -
to drive the tube.
The AC supply is rectified and used as a source of DC voltage for that
inverter !!!!!
Eg: http://www.repairfaq.org/sam/cflamp1.pdf
...... Phil
I just picked up eight 18-watt spiral-tube cfl's at Cole Hardware, 50
cents each, subsidized by PG&E. They're guaranteed for 12 years. I
don't believe that. My experience with cfl's is that they blow up
fairly often, especially if started/stopped a lot.
John said:I just picked up eight 18-watt spiral-tube cfl's at Cole Hardware, 50
cents each, subsidized by PG&E. They're guaranteed for 12 years. I
don't believe that. My experience with cfl's is that they blow up
fairly often, especially if started/stopped a lot.