Perhaps someone out there can answer pretty simple question!
I have a Sharp QA-1150 LCD panel but no power supply. It requires 12V and 1.9A. As watts, i.e. power, equals volts multiplied by amps the panel needs 22.8 watts of power to operate. So far so good, eh?
However, I can't find a power supply that delivers exactly 12 volts and 1.9 amps but can I use any power supply as long as the output in watts is around 22.8, e.g. 24 volts and 0.95 amp?
Look forward to some replies, Rich
I have a Sharp QA-1150 LCD panel but no power supply. It requires 12V and 1.9A. As watts, i.e. power, equals volts multiplied by amps the panel needs 22.8 watts of power to operate. So far so good, eh?
However, I can't find a power supply that delivers exactly 12 volts and 1.9 amps but can I use any power supply as long as the output in watts is around 22.8, e.g. 24 volts and 0.95 amp?
Look forward to some replies, Rich
Hi
If it say 12 Volts you must have 12 Volts.
about the 1.9 A that means that means you must have at least1.9A so 3.0 A will do just fine.
Feel free to ask if you dont understand.
Keld
If it say 12 Volts you must have 12 Volts.
about the 1.9 A that means that means you must have at least1.9A so 3.0 A will do just fine.
Feel free to ask if you dont understand.
Keld
Noooooo!
It's got to be 12 volts.
You can use a higher current power supply though, but make sure it's regulated.
Background:
Current is the flow from one part (the power supply) to another (the equipment). It is determined by the demand of the equipment. So even if you had a 100Amp power supply, your equipment would only draw 1.9A, as long as the voltage remained as 12V.
It's got to be 12 volts.
You can use a higher current power supply though, but make sure it's regulated.
Background:
Current is the flow from one part (the power supply) to another (the equipment). It is determined by the demand of the equipment. So even if you had a 100Amp power supply, your equipment would only draw 1.9A, as long as the voltage remained as 12V.
Okay, that makes sense - I use 12 volts and at least 1.9 amps
But what do you mean by making sure the amps are regulated?
But what do you mean by making sure the amps are regulated?
It's the voltage that should be regulated.
The voltage of cheap or simple power supplies can vary according to the current drawn.
Just buy a power supply that says it's regulated. That'll be fine.
ie 12v (regulated) at >1.9A.
Cheers,
The voltage of cheap or simple power supplies can vary according to the current drawn.
Just buy a power supply that says it's regulated. That'll be fine.
ie 12v (regulated) at >1.9A.
Cheers,
REGULATED POWER SUPPLY
do not run to Radio Shack to buy there 19.99 or 29.99 powersupplies....
run to your old pc's that you have kept in the garage, cellar or attick and remove the usually perfect working powersupply
then take a yellow and black cable from the ps and that should be a nice 12 volt and more than enough amps to cover the need of your lcd panel!!!!!
by the way, yes you can buy the small jack that enters the panel in a Radio shack to connect to the panel....
do not run to Radio Shack to buy there 19.99 or 29.99 powersupplies....
run to your old pc's that you have kept in the garage, cellar or attick and remove the usually perfect working powersupply
then take a yellow and black cable from the ps and that should be a nice 12 volt and more than enough amps to cover the need of your lcd panel!!!!!
by the way, yes you can buy the small jack that enters the panel in a Radio shack to connect to the panel....
just one little addition:
If the PSU is ATX you've got to short the green wire with a black one (mainboard plug) in order to turn it on. 😉
If the PSU is ATX you've got to short the green wire with a black one (mainboard plug) in order to turn it on. 😉
magicmasta
i have about 10 powersupplies in stock... i had about 15
checked them fro green wires i haven't found one green wire on those ps's
is there something i overlooked? i have uesed several already and i cannot remember having had some green wire .
i have a basic drawing with the purpopse of each cable ( i found this on the outside of one of the ps and the values seem to match every other generic ps..
i supoes when you write about atx the wattage is 250 or less?
\these are all more that i am sure of ( i salvage with taste😉 )
i have about 10 powersupplies in stock... i had about 15
checked them fro green wires i haven't found one green wire on those ps's
is there something i overlooked? i have uesed several already and i cannot remember having had some green wire .
i have a basic drawing with the purpopse of each cable ( i found this on the outside of one of the ps and the values seem to match every other generic ps..
i supoes when you write about atx the wattage is 250 or less?
\these are all more that i am sure of ( i salvage with taste😉 )
magicmasta
at least nobody here made the remark that i am stingy,.......
all seem to 'not like radio shack' !!!!
allthough i know the phone number of the store by heart.
when the store clerk asks me my phone number , they generally need to put that in the system, i use their phone number and i have never had any of them complain or even blink an eye! sighhhh...😕
at least nobody here made the remark that i am stingy,.......
all seem to 'not like radio shack' !!!!
allthough i know the phone number of the store by heart.
when the store clerk asks me my phone number , they generally need to put that in the system, i use their phone number and i have never had any of them complain or even blink an eye! sighhhh...😕
I don't like radio shack, yet i always find myself there. I should get a job there! Free connectors... Oh yea...
uvodee...
AT and ATX power supplies differ in that AT is older, and has a 2-part connector. ATX is newer, and needs recognition from the motherboard that it is hooked up, and is a single connector. Whereas the AT power supplies use a on/off switch to turn them on and off, an ATX power supply uses a momentary switch that tells the motherboard to short the green wire with a black wire...and allowing the PSU to turn on.
I feel the same way about radio shack 🙂. It's expensive, the people don't know anything, yet I always look around at the connectors and electronics there 🙄
AT and ATX power supplies differ in that AT is older, and has a 2-part connector. ATX is newer, and needs recognition from the motherboard that it is hooked up, and is a single connector. Whereas the AT power supplies use a on/off switch to turn them on and off, an ATX power supply uses a momentary switch that tells the motherboard to short the green wire with a black wire...and allowing the PSU to turn on.
I feel the same way about radio shack 🙂. It's expensive, the people don't know anything, yet I always look around at the connectors and electronics there 🙄
you just have to find the right Shack. I used to think the same thing. But I went to a different one a few weeks ago, and it was beautiful. They had every single thing I was looking for. It was all in order and hardly anything was misplaced or on the wrong hook. Everything their computer said they had, they had. And the salesperson was actually very helpful, and even knew the resistor color codes by memory. Maybe it's a fluke, but this Rat Shack is a goldmine!
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