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MeltMan · 04-04-2002, 02:54 PM

You cant use variable resistors... they have 2W ratings unless you get a HUGE 55W variable resistor. Even rheostats have lower ratings than that. A 50W rheostat costs $30. Your best bet would to build a voltage regulator circuit with some high wattage variable regulators and a big heatsink, and use the pots to trim the regulators. Or just find a psu that puts out a desirable voltage for your TEC's.

Heh, nevermind... i thought you were tweaking the TEC's voltage... long day.

04-04-2002, 02:54 PM	#9
MeltMan Cooling Savant Join Date: Aug 2001 Location: KS Posts: 374	You cant use variable resistors... they have 2W ratings unless you get a HUGE 55W variable resistor. Even rheostats have lower ratings than that. A 50W rheostat costs $30. Your best bet would to build a voltage regulator circuit with some high wattage variable regulators and a big heatsink, and use the pots to trim the regulators. Or just find a psu that puts out a desirable voltage for your TEC's. Heh, nevermind... i thought you were tweaking the TEC's voltage... long day. __________________ MeltMan Lurker Supreme!