mAh Usage

[silegnav]

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]

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.

No, it will not fry, the TFT will draw only 300mA from a possible 800mA output.

 

[MikeMl]

Read this thread.

 

[carmusic]

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

 

[silegnav]

Photo of Adapter

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

The specifications of the adapter is here below:

**broken link removed**

 

[carmusic]

to be sure plug your adapter without any load and mesure output voltage.

 

[ericgibbs]

to be sure plug your adapter without any load and mesure output voltage.

He should really load the output with a 40R resistor, say 39R at 5W when doing that test.
or at least 220R.

 

[silegnav]

to be sure plug your adapter without any load and mesure output voltage.

How do I do that?