Short answer: No.can this be done with a fixed resistor?
Wayneh is totally right! Also, for a monitor it will be a lot more convenient to have the correct supply, instead of a bunch of parts. Just be sure that you get a 12 volt supply with the correct polarity on the DC connector, because some applications use center negative.Short answer: No.
A resistor 'works' (but is inefficient) only when the load has a constant and known current demand, like a lightbulb. That does not describe a monitor.
A linear voltage regulator such as L7812 is a "smart" resistor that solves the varying-current problem, but does not solve the inefficiency problem. Depending on what you're doing (the load of the monitor), you may not care about the power loss due to the regulator.
The state-of-the-art solution is a DC-DC buck converter that can accomplish the voltage change with efficiency over 90%. You can buy these pre-made on eBay for very low cost, so I'd look into that option if it was me.
That can work well, but only if you get the information on how to set up the board. AND, of course, you will still need a case for the circuit board because the board package is mains powered.However nicer choice may be order at ebay for 40 cents the SMPS labelled YB11L03 DC-DC LM2596S power supply/battery charger. That is 1x2 inch pcb designed for 7...35 V input and 2-30 V output up to 5 Amps adjustable for CC or CV regimes
Short answer: No.
A resistor 'works' (but is inefficient) only when the load has a constant and known current demand, like a lightbulb. That does not describe a monitor.
A linear voltage regulator such as L7812 is a "smart" resistor that solves the varying-current problem, but does not solve the inefficiency problem. Depending on what you're doing (the load of the monitor), you may not care about the power loss due to the regulator.
The state-of-the-art solution is a DC-DC buck converter that can accomplish the voltage change with efficiency over 90%. You can buy these pre-made on eBay for very low cost, so I'd look into that option if it was me.
its ratet @3.5 amps if thats what you meanHow much power draw for touchcreen moniter?
Are you saying your keyboard is not working? You need to find the right kext for it or try a different keyboard. I had some success making Hackintoshes but it's been a long time now.i found an end that would plug into the screen power input so i soldered it onto a direct tv power supply. however i looked into the buck converter and ordered one on ebay for 3.99 just to have as it will go nicely with this 30v power pack i have laying around to power pretty much any device 5-30v....new problem though..installed the latest drivers-and older ones- but all i can do is scroll up and down a page, move the cursor and drag windows. it will not let me click any buttons, tabs, ect. was hoping to use this for photoshop which is why i purchased it. any help would be appreciated....thanks in advance!
First I'd suggest starting your own thread..i found an end that would plug into the screen power input so i soldered it onto a direct tv power supply. however i looked into the buck converter and ordered one on ebay for 3.99 just to have as it will go nicely with this 30v power pack i have laying around to power pretty much any device 5-30v....new problem though..installed the latest drivers-and older ones- but all i can do is scroll up and down a page, move the cursor and drag windows. it will not let me click any buttons, tabs, ect. was hoping to use this for photoshop which is why i purchased it. any help would be appreciated....thanks in advance!
by Duane Benson
by Jake Hertz
by Duane Benson
by Jake Hertz