S silegnav New Member Jan 31, 2011 #1 I have a small TFT screen which uses 12V 300mA. I will attach to it an adapter 12V 800mA. Will the adapter fry the TFT screen? Thanks.
I have a small TFT screen which uses 12V 300mA. I will attach to it an adapter 12V 800mA. Will the adapter fry the TFT screen? Thanks.
ericgibbs Well-Known Member Most Helpful Member Jan 31, 2011 #2 silegnav said: I have a small TFT screen which uses 12V 300mA. I will attach to it an adapter 12V 800mA. Will the adapter fry the TFT screen? Thanks. Click to expand... No, it will not fry, the TFT will draw only 300mA from a possible 800mA output.
silegnav said: I have a small TFT screen which uses 12V 300mA. I will attach to it an adapter 12V 800mA. Will the adapter fry the TFT screen? Thanks. Click to expand... No, it will not fry, the TFT will draw only 300mA from a possible 800mA output.
C carmusic New Member Jan 31, 2011 #4 does your adapter is regulated type (switching type)? if not then it could fry the lcd because volatge will be a lot higher at only 300ma load
does your adapter is regulated type (switching type)? if not then it could fry the lcd because volatge will be a lot higher at only 300ma load
S silegnav New Member Jan 31, 2011 #5 Photo of Adapter carmusic said: does your adapter is regulated type (switching type)? if not then it could fry the lcd because volatge will be a lot higher at only 300ma load Click to expand... The specifications of the adapter is here below: **broken link removed**
Photo of Adapter carmusic said: does your adapter is regulated type (switching type)? if not then it could fry the lcd because volatge will be a lot higher at only 300ma load Click to expand... The specifications of the adapter is here below: **broken link removed**
C carmusic New Member Feb 1, 2011 #6 to be sure plug your adapter without any load and mesure output voltage.
ericgibbs Well-Known Member Most Helpful Member Feb 1, 2011 #7 carmusic said: to be sure plug your adapter without any load and mesure output voltage. Click to expand... He should really load the output with a 40R resistor, say 39R at 5W when doing that test. or at least 220R.
carmusic said: to be sure plug your adapter without any load and mesure output voltage. Click to expand... He should really load the output with a 40R resistor, say 39R at 5W when doing that test. or at least 220R.
S silegnav New Member Feb 1, 2011 #8 carmusic said: to be sure plug your adapter without any load and mesure output voltage. Click to expand... How do I do that?
carmusic said: to be sure plug your adapter without any load and mesure output voltage. Click to expand... How do I do that?