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BO(V)BZ · 07-05-2003, 01:51 PM

Well, I did find something that I thought would work: A voltage regulator circuit. I bought an LM338K, which is a 5A, 1-35V regulator, similar to the famous LM317 series except it handles more amperage. I used the following guide to assemble it, but left out the capacitors, as I didn't have those, and as best as I could gather, they aren't necessary.

http://casemods.pointofnoreturn.org/vregtut/

Anyways, I finished the circuit, and plugged it in. It DOES vary the voltage, from about 3-13V [plugged into a 14.2V PSU] but it only produces mA, so I can't power the smallest fan I own with it, let alone my Comair Rotrons. Anybody here have an idea? I've got another spare LM338, so I was going to buy those capacitors the guide recommended and try making another circuit.

Thanks for your help!

BO(V)BZ

07-05-2003, 01:51 PM	#4
BO(V)BZ Cooling Neophyte Join Date: Apr 2003 Location: WI Posts: 53	Well, I did find something that I thought would work: A voltage regulator circuit. I bought an LM338K, which is a 5A, 1-35V regulator, similar to the famous LM317 series except it handles more amperage. I used the following guide to assemble it, but left out the capacitors, as I didn't have those, and as best as I could gather, they aren't necessary. http://casemods.pointofnoreturn.org/vregtut/ Anyways, I finished the circuit, and plugged it in. It DOES vary the voltage, from about 3-13V [plugged into a 14.2V PSU] but it only produces mA, so I can't power the smallest fan I own with it, let alone my Comair Rotrons. Anybody here have an idea? I've got another spare LM338, so I was going to buy those capacitors the guide recommended and try making another circuit. Thanks for your help! BO(V)BZ