Laptop Power Supply for Car Schematic Diagram


Posted on Feb 6, 2014

Laptops today are the what is called notebook computers, which now is becoming popular. Laptops can be brought into the bag making it suitable for business trips. And even as the home entertainment center  laptop is more convenient, because it takes a little space. However, in my opinion, there is one very important which become shortcomings


Laptop Power Supply for Car Schematic Diagram
Click here to download the full size of the above Circuit.

most laptops which powered by an electric voltage of 19V, making it impossible for them to direct the power to an integrated network vehicle (12-14V). It is very important, especially when laptop battery capacity is not more than two hours in active mode. And what if you, at some object in the whole day want to process some data, but no other useful sources of electricity This is a description of the relatively simple psu laptop circuit adapter (laptop DC-DC converter), which increases the voltage-board vehicle network to 19V, needed to supply the laptop. And maintain this voltage stable. The adapter is based on chip LM3524, which is a high-frequency switching DC-DC converter with pumped inductance and output current up to 200mA, the output current which, in this scheme, will increased to 3. 5-4A using a powerful transistor switch (on transistors VT1 and VT2). Consider the circuit carefully. Voltage on-board vehicle network goes to supply circuit and output circuits D1 through key fuse F1 and low-resistance wire resistor R6, mitigating start the generator and the circuit operates in overload protection. Current consumption chip D1 determines the voltage at R6, enter the inputs of overload switching Conclusions 4 and 5 D1. The voltage on the R6 increases with what greater than the load current (and actual current consumption from the source). A pair of output transistors connected in parallel circuits D1 (emitter terminals...




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