LAPTOP_COMPUTER_POWER_SUPPLY

Published:2009/6/26 4:13:00 Author:Jessie | From:SeekIC

A laptop computer supply that has 9-V output, crowbar overvoltage protection, and operates from a 12-V supply is shown above. The supply voltage should be at least 3.6 V above the expected output voltage. Q1 should be heatsinked appropriately．R5 should have a value of 1.5 kΩ for 9-V out-put. Table 1 gives values for other voltages.



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