How to configure LM317T to deliver 5 amps?
I wonder if someone could help me resolve my problem.
Well, I'm trying to build a Laptop AC Adapter, but I can't get these components right now:
-A voltage regulator other than LM317T and I have no experience with other ICs.
So I'm using a DC to DC converter.
The input power supply is a Z12 Lexmark printer AC adapter. It gives a DC output current of 830mA under 30 volts (actually it's 37.5 volts, I've checked this with my multimeter).
However, the output I would like to get is 4-5 amps under 19.5 volts.
I would like to mention that I've already given it a try. But the output current I've got wasn't enough to feed the laptop.
I've used an LM317T and adjusted the voltage with a 6.6k resistor and a 47k potentiometer down to 19.5 volts.
If there is a way to boost up the current with a joulethief or using a set of transistors or parallels LM317Ts, please tell me.
Also, I hope that you give me the part number of all the components to match up with the LM317T because I must use this type of regulator.
Thanks for your help and please consider my situation.