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Power Supply Tec
I need to get 12V out of a 7.2V source in a circuit to run a fan.?
I have a miniature fridge that makes use of a TEC (thermo-electric cooler). I have recently modified the design by replacing the stock heat sink and fan with a much larger heatsink, and faster fan (basically a cpu cooling system). My problem is, the supply voltage to the fan is only about 7.2V, and the fan is rated at 12V. I've thought about just running a spare 12V wall-wort into the box, but I didn't want 2 power supplies going into the thing. Can you use a transistor or something else to step up the voltage coming off of the circuit board to get 12V?
Check out the chip below. It is for a simple boost switching power supply. A low input voltage is run through an inductor. When the current builds up a bit, the current is cut off. The collapsing magnetic field generates a higher voltage
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Demo of model 940 power supply and speaker console
Peltier/TEC modules. If I have a relay switch, can I plainly mount it to my current PSU?
Instead of purchasing a secondary (additional) PSU, i.e. the Meanwell 600W single output switching power supply to provide the power necessary for peltier/TEC module. Can it be possible to obtain a single PSU with 1000W or more with 85% load capacity and attach the relay switch to it so it can power on/off with the PC? I am not very keen in having two PSUs inside my PC case.
All I want to do is have a 1000-1200W PSU powering all my components; peltier, CPU, fans, etc. As long there is enough amperes, I plan on attaching a molex connector to the peltier and plug it in the PSU. I don't see any reason to have two PSUs: one for powering the motherboard while the second for the peltier, quite silly if you ask me-more of a waste! I just want to know if this is possible, powering my peltier by using the one and only PSU that I already have without any repercussions.
yes by unplugging the previous one
came here to say exactly this, thank god someone noticed. I see he has got a nice soldering iron but using a pc psu some times just doesn’t cut it, get him a regulated power supply! also, if his teachers dont leave assignment from books buy them used, you will save a huge amount of money: betterworldbooks.com abebooks.com dont be afraid of ordering a book 10 years old, unless its cutting edge research there is almost nothing to be missing and editions dont change that much (almost nothing) besides.. 7 bucks vs hundreds (plus dead trees) Also, he might be interested in microcontrollers and such, take a look at arduinos an TI’s launchpads (he probably already knows about them, has them) kudos!