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Rich W · 01-22-2001, 04:15 PM

Since your VMax is 24.6V and your supply is 24V, it would be best to run it at full voltage.. but since your supply won't push IMax (11.3 amps), you'll have to change the voltage down a bit so that the load of the pelt will match the output of the supply (obviously). Your best bet (since I do not know all the required info) would be to contact the manufacturer and ask them for the power requirement curves, etc.. explain to them your situation. Also take into account your cooling solution. If it is an air cooled peltier (or a not-so-adequate water cooled peltier), then you should consider running closer to the %75 input power (that is around hte input level that is most efficient [ie, most cooling power for least input power, and therefore least heat generated by the peltier]). So, you should get in contact with the manufacturer to find out how much current the TEC will draw as a function of voltage. If the manufacturer is TeDist.com, they will surely be able to help - they have a wonderful tech department. Also try http://www.peltier-info.com... haven't explored there much, just saw the link today.

Good luck!

PS - Be careful with changing the input power to your power supply with that transformer.. make sure it is within limits of design. For instance, it is is a linear supply and the output voltage exceeded the rating of the capacitors, then you could have experiend some troubles (bulging/breaking caps, etc) and could have damaged the supply.

You wrote:

RichW, please help me with some information...I bought a peltier that has specs: Qmax 172W, Vmax 24.6V, Imax 11.3A...I have a power supply that was 24V, 7.5A, and I installed a variable ac to it so I can adjuct voltage with a dial...when I tested output with my voltmeter, I get from 0 to 30.5V output...any ideas how I should set this power supply to work with this peltier, IF it will work for this peltier?

01-22-2001, 04:15 PM	#10
Rich W Cooling Neophyte Join Date: Feb 2000 Posts: 77	Since your VMax is 24.6V and your supply is 24V, it would be best to run it at full voltage.. but since your supply won't push IMax (11.3 amps), you'll have to change the voltage down a bit so that the load of the pelt will match the output of the supply (obviously). Your best bet (since I do not know all the required info) would be to contact the manufacturer and ask them for the power requirement curves, etc.. explain to them your situation. Also take into account your cooling solution. If it is an air cooled peltier (or a not-so-adequate water cooled peltier), then you should consider running closer to the %75 input power (that is around hte input level that is most efficient [ie, most cooling power for least input power, and therefore least heat generated by the peltier]). So, you should get in contact with the manufacturer to find out how much current the TEC will draw as a function of voltage. If the manufacturer is TeDist.com, they will surely be able to help - they have a wonderful tech department. Also try http://www.peltier-info.com... haven't explored there much, just saw the link today. Good luck! PS - Be careful with changing the input power to your power supply with that transformer.. make sure it is within limits of design. For instance, it is is a linear supply and the output voltage exceeded the rating of the capacitors, then you could have experiend some troubles (bulging/breaking caps, etc) and could have damaged the supply. You wrote: RichW, please help me with some information...I bought a peltier that has specs: Qmax 172W, Vmax 24.6V, Imax 11.3A...I have a power supply that was 24V, 7.5A, and I installed a variable ac to it so I can adjuct voltage with a dial...when I tested output with my voltmeter, I get from 0 to 30.5V output...any ideas how I should set this power supply to work with this peltier, IF it will work for this peltier?