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1156 bulb versus CF bulb

T

Tim Thomson

Jan 1, 1970
0
Does anyone know how much a 1156 12 volt auto buld draws?
What would a 120 volt CF bulb draw on the 12 volt dc side of one of
those cheap crappy tire inverters 75 watt and 400 watt. (rated at 9
watts 120 vac)
This is an RV project..........
 
S

Steve Spence

Jan 1, 1970
0
Tim said:
Does anyone know how much a 1156 12 volt auto buld draws?
What would a 120 volt CF bulb draw on the 12 volt dc side of one of
those cheap crappy tire inverters 75 watt and 400 watt. (rated at 9
watts 120 vac)
This is an RV project..........

Why not just pick up a 12vdc fluorescent from home depot for $11. 6
Watts and a lot of light.
 
S

Steve Spence

Jan 1, 1970
0
SolarFlaire said:
Because they sell spare tubes right beside the units
and the demo units in the store are half black on the
tubes. It looks like they haven't provided for low
voltage on the inverters and it burns out the tubes
post haste.

not true. I use these lights daily. The only one I lost was the one
dropped on the floor when it was being used as a flashlight.
How do we know these 12 volt flourescents are any more
efficient than 12 v incandescents and cost 20 times the
price?

look at the lumens per watt. They are 4x as efficient as incandescents.
 
J

JoeSP

Jan 1, 1970
0
Tim Thomson said:
Does anyone know how much a 1156 12 volt auto buld draws?
What would a 120 volt CF bulb draw on the 12 volt dc side of one of
those cheap crappy tire inverters 75 watt and 400 watt. (rated at 9
watts 120 vac)
This is an RV project..........

The 1156 incandescent draws about 2.1 amps at 12.8V =27W, and provides about
400 lumens for an efficiency of 15 lumens per watt.

An F8T5/CW Fluorescent draws about 0.8 amps at 12.8V =10.2W, and provides
about 400 lumens for an efficiency of 39 lumens per watt. That's over twice
the efficiency of incandescents.

Those inverters generally claim an efficiency of about 75-90%. Check to see
if the inverter draws current when it's not under load. That should still
save you a good deal of power in the long-run over an 1156 bulb.

I have installed some 15W 110V fluorescent strip lights on the ceiling and
walls of my RV, plugging them into small 75W inverters, and they seem to
work quite well, but they don't start as easily, and buzz more loudly than
when running on regular AC.

I'm still waiting for good and affordable white LEDs. At present, they are
very expensive, not much more efficient than incandescents, and the harsh
violet-white light isn't particularly easy on the eyes.
 
W

wmbjk

Jan 1, 1970
0
(regarding solar fla_i_re)
(You changed your handle recently I notice.

Same old pattern. Once each name gets in enough kill filters he
changes it. In the energy groups alone he's already gone through
several variations of both Gymmy Bob and John P Bengi. He uses so many
names that he's frequently confused, and sometimes you'll see him
using two different names in the same thread. Even when he changes
names completely though he's pretty easy to spot. He can't go more
than a week or so without using profanity, accusing someone of being a
troll, rambling incoherently, or complaining about bottom posters.
Reminds me of the Nature Boy
Rick Flaire WoooooHooooo!

Naw, more like Ernest P. Worrel.

Wayne
 
M

Mr Wizzard

Jan 1, 1970
0
Tim Thomson said:
Does anyone know how much a 1156 12 volt auto buld draws?
What would a 120 volt CF bulb draw on the 12 volt dc side of one of
those cheap crappy tire inverters 75 watt and 400 watt. (rated at 9
watts 120 vac)
This is an RV project..........


Dude! where have you been? - they have 12-volt CF's now.
(and they rock!) They draw about an Amp on 12 volts, and
can light a whole room damn near. If you want/need info on
then, let me know. I got them on line. Also made a slew of
of camp lights out of come dowel rod, regular lamp sockets,
and 12-volt 7.2 Amp hour batterys on their side (and hot glue)
 
T

Tim Thomson

Jan 1, 1970
0
wmbjk said:
(regarding solar fla_i_re)


Same old pattern. Once each name gets in enough kill filters he
changes it. In the energy groups alone he's already gone through
several variations of both Gymmy Bob and John P Bengi. He uses so many
names that he's frequently confused, and sometimes you'll see him
using two different names in the same thread. Even when he changes
names completely though he's pretty easy to spot. He can't go more
than a week or so without using profanity, accusing someone of being a
troll, rambling incoherently, or complaining about bottom posters.


Naw, more like Ernest P. Worrel.

Wayne

Are you talking to me????? I am the same guy as my name!
 
T

Tim Thomson

Jan 1, 1970
0
JoeSP said:
The 1156 incandescent draws about 2.1 amps at 12.8V =27W, and provides about
400 lumens for an efficiency of 15 lumens per watt.

An F8T5/CW Fluorescent draws about 0.8 amps at 12.8V =10.2W, and provides
about 400 lumens for an efficiency of 39 lumens per watt. That's over twice
the efficiency of incandescents.

Those inverters generally claim an efficiency of about 75-90%. Check to see
if the inverter draws current when it's not under load. That should still
save you a good deal of power in the long-run over an 1156 bulb.

I have installed some 15W 110V fluorescent strip lights on the ceiling and
walls of my RV, plugging them into small 75W inverters, and they seem to
work quite well, but they don't start as easily, and buzz more loudly than
when running on regular AC.

I'm still waiting for good and affordable white LEDs. At present, they are
very expensive, not much more efficient than incandescents, and the harsh
violet-white light isn't particularly easy on the eyes.

I do not need more light than what my four 12 volt 1156 bulbs are giving
me......I did install one of those double mini tube flouresent......(good
quality unit).............but I was not to happy to find out that it draws
allmost the same as one 12 volt 1156 bulb. I want the same amount of light with
less draw I will go 12 volt Cf if I have too.
I would check the draw with my clamp myself with the inverter and the CF but I
am a thousand kms from home stuck in a hotel right now. Where I live I have to
travel 400 kms to get a deal on a CF bulb. I have access to buy the ultra mina
right now at a good price. These ultra minis by Noma claim 120 9w = 40w 500
lumens 6000 hr's at 3.50 cdn. BTW I picked up 6 of the CF Black lights for 6.00
cdn a piece. They put out pretty good as far as black light goes. They get a
little hotter than the white ones but not near as hot as the incadescent black
light used to..........I banned my kids from using those ones.....dam fire
hazard they were. They also have a CF bug light lol.
 
T

Tim Thomson

Jan 1, 1970
0
Ulysses said:
I measured about 2.4 amps at that voltage on one particular bulb but my
meter may have been reading a bit high (cheapo Harbor Fright digital
multimeter).


I measured .46 amps with one 12" CCFL tube. I don't know how many lumens
but the amount of light seems to me to be more than what you get with one
1156 bulb. The only problem I've had with the CCFL is an inverter failing
due to overvoltage while running it from an RV DC converter. Also, the
light color on the white CCFL tubes is towards the blue spectrum but if you
just think of it as moonlight it's fine ;-).

I have been using one 12" CCFL light daily (well, nightly) for a few years
now and have not noticed any loss of brightness and the tubes do not get
dark at the ends.

What is a "ccfl" ?
 
T

Tim Thomson

Jan 1, 1970
0
Mr said:
Dude! where have you been? - they have 12-volt CF's now.
(and they rock!) They draw about an Amp on 12 volts, and
can light a whole room damn near. If you want/need info on
then, let me know. I got them on line. Also made a slew of
of camp lights out of come dowel rod, regular lamp sockets,
and 12-volt 7.2 Amp hour batterys on their side (and hot glue)

WHAT EVER............There still ten times the price HA HA HA and did you
see how much they want for one of those lanterns with a CF and lol the
batts they take cost more than the lamp.
 
W

wmbjk

Jan 1, 1970
0
Are you talking to me????? I am the same guy as my name!

No, I was referring to Solar Flaire. AKA Solar Flare, John P Bengi,
Gymmy Bob, etc. etc. Although IIRC Gymmy has used a Shaw address
sometimes.... OK, I got my eye on you now. :)

Wayne
 
S

Steve Spence

Jan 1, 1970
0
Tim said:
Mr Wizzard wrote:



WHAT EVER............There still ten times the price HA HA HA and did you
see how much they want for one of those lanterns with a CF and lol the
batts they take cost more than the lamp.

$11 bucks at Home Depot, they take 8 AA's or a 12vdc plugin.
 
S

Steve Spence

Jan 1, 1970
0
SolarFlaire said:
OK. Lumens per watt. Where is the wattage stated for
the unit and not on the bulb?
6 watts according to my KAW .....
 
J

JoeSP

Jan 1, 1970
0
SolarFlaire said:
Have you, or can you, actually measure the imput
current and voltage for one, or more, for a sample? I,
for one, would be interested in the actual power
consumption of the inverter.

JoeSp stated:
"The 1156 incandescent draws about 2.1 amps at 12.8V
=27W, and provides about
400 lumens for an efficiency of 15 lumens per watt.

An F8T5/CW Fluorescent draws about 0.8 amps at 12.8V
=10.2W, and provides
about 400 lumens for an efficiency of 39 lumens per
watt. That's over twice
the efficiency of incandescents"

This indicates a regular incandescent is about the same
efficiency as the 1156 at 400 lumens per watt. There
must be a typo, wordo, or matho there.

More data needed if anybody has it please.

It's not 400 lumens per watt. Both produce 400 Lumens (brightness)
Incandescent = 15 Lumens per watt. (less efficient)
Fluorescent = 39 lumens per watt. (more efficient)
 
M

Mr Wizzard

Jan 1, 1970
0
Tim Thomson said:
WHAT EVER............There still ten times the price HA HA HA

$12 for a 13W 12-volt CF that draws .86 Amps @12v is bad ?
hummm. Better go back and rethink this I guess.
and did you
see how much they want for one of those lanterns with a CF and lol the
batts they take cost more than the lamp.

No idea what this is. I'm a DIY guy, hot glue gun, hobby battery's,
12-v CF's, old lamp sockets, miniture decoverative lamp shade...
 
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