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thezfunk · 05-18-2004, 01:56 AM

Alright, basic run-down of my problem:

I have a 172 watt 40mm TEC. 24v at 12amps. In my research I have found that cooling effeciency max on that thing hits at about 18v. BUT, finding a powersupply that does 18volts at 12 amps without spending 400+ dollars is impossible.

Well I work at a casino where we have a bunch of 24v AC powersupplies. I have one for free actually (its 24v at I think 50VA but it might be .250KVA which is 250VA). Using a bridge rectifier I can convert it to DC. With 4 diodes in the rectifier with a voltage drop of .707 volts on each that should give me just alittle above 16v DC. I should only have to find a rectifier that can handle 12 amps or so because there won't be anymore amps flowing through it than the TEC is pulling. Correct?

Comments? Suggestions?

05-18-2004, 01:56 AM	#1
thezfunk Cooling Neophyte Join Date: Mar 2004 Location: Wouldn't you like to know Posts: 33	Power! I have this idea, see... Alright, basic run-down of my problem: I have a 172 watt 40mm TEC. 24v at 12amps. In my research I have found that cooling effeciency max on that thing hits at about 18v. BUT, finding a powersupply that does 18volts at 12 amps without spending 400+ dollars is impossible. Well I work at a casino where we have a bunch of 24v AC powersupplies. I have one for free actually (its 24v at I think 50VA but it might be .250KVA which is 250VA). Using a bridge rectifier I can convert it to DC. With 4 diodes in the rectifier with a voltage drop of .707 volts on each that should give me just alittle above 16v DC. I should only have to find a rectifier that can handle 12 amps or so because there won't be anymore amps flowing through it than the TEC is pulling. Correct? Comments? Suggestions?