Generally speaking, the DC input voltage of 17 inch LCD is 12V or 18V, but some models use 15V or 24V.
However, since the DC power supply of the landlord LCD is from the host computer, it is generally 12V, but it must be confirmed whether it is12v;
Generally, there are parameters such as power polarity, rated voltage, rated current, power consumption, etc. on the back of LCD or in the manual. The landlord may wish to look it up carefully.
If not, you need to use a multimeter to detect, that is, measure the voltage and polarity at the output end of the host power socket, and then calculate the working current according to the number of power supplies;
Suppose:
1, voltage12v; ;
2. The dissipation power is 45W；;
Then the current value should be: 45/12 = 3.75 (a);
Take the power factor1.414 ~1.732, and the actual working current is:
1.4 14 * 3.75 = 5.3025(A)
1.732*3.75=6.4950(A)
In other words, you can buy a power adapter with an output voltage of not less than 12V (not more than 14V) and an output current of 5 ~ 6A as a substitute, and ensure that the polarity of the plug is the same as that of the socket;
Other situations and so on.