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RoboTech · 04-04-2003, 07:53 AM

Hey Zoltan,

Welcome to the forum...

I'm no expert but I can tell you what I have done

1. Size - are they 40 mm square or 50 mm? The larger the TEC, the larger the wattage rating usually.

2. Test each one with a variable output power supply to find out where they work best. (0 - 30 VDC up to 25 amps) Mount the pelt between a cold plate and water block. Hook up the waterblock to a water-cooling system (to keep the hot side cool during testing). Start out at about 10 VDC and mesure the temp of the cold plate. Every few minutes turn up the voltage 1 or 2 volts and check cold plate temp. Keep doing this until the cold side temp starts getting warmer as the voltage increases. The minimum voltage you get the most cooling is the TECs sweet spot and is usually a few volts below it's factory rated Vmax.

Good luck...

04-04-2003, 07:53 AM	#2
RoboTech Cooling Savant Join Date: Sep 2002 Location: Cincinnati, OH Posts: 229	Hey Zoltan, Welcome to the forum... I'm no expert but I can tell you what I have done 1. Size - are they 40 mm square or 50 mm? The larger the TEC, the larger the wattage rating usually. 2. Test each one with a variable output power supply to find out where they work best. (0 - 30 VDC up to 25 amps) Mount the pelt between a cold plate and water block. Hook up the waterblock to a water-cooling system (to keep the hot side cool during testing). Start out at about 10 VDC and mesure the temp of the cold plate. Every few minutes turn up the voltage 1 or 2 volts and check cold plate temp. Keep doing this until the cold side temp starts getting warmer as the voltage increases. The minimum voltage you get the most cooling is the TECs sweet spot and is usually a few volts below it's factory rated Vmax. Good luck...