The weather has started to turn monsoon and the outdoor temperature is decreasing.Sitting next to the computer with cold hands, work efficiency will be greatly reduced.Today we will guide you to make a mini fan heater so that winter is no longer a nightmare for your hands every time you have to work at the computer.A mini USB fan or fan of your choice (Price is about 50,000 VND)A hot and cold scallop TEC-12706 (about 60,000 VND)A heatsink aluminum plate (costs about 10,000 VND)A little bit of computer CPU thermal paste (priced at about 5,000 VND)A round power jack costs about (2000 VND)Theory of how to heat:Before we start, let's find out what "hot and cold" is and how it works."Cold-cold clam" also known as "Peltier", is a semiconductor device with cooling properties on one side, and the other side is heated when a direct current flows through.This is the type of material that you learned in the 2nd grade Physics textbook.Its structure is quite simple, 2 material plates close to each other, when direct current is applied to the 2 poles, the physical phenomenon that occurs is that 1 side will heat up and the other side will cool down.On the contrary, if one side is heated and the other side is cooled, a direct current will appear at the two ends of the wire.And now the crafting:Remove the protective cage of the fanRemove the 3 screws fixing the fan motor boxThen go to the back of the fan to remove the motor part.The engine was revealed after removing the screws.Then you cut the main power cord.We only need a short paragraph is enough.You solder this power cord to the round power pin. The red wire you solder to the back post of the power jack, the light colored wire you solder to the pile on the side of the power jack.After soldering, you fix this power jack on the fan with candle glue.There is a round hole on the fan body to thread the wire.We will use this hole as a hole to plug the power in.To connect the hot and cold clams to the power source, you solder the two power cords of the scallops to the motor.The red wire (the positive pole of the cockle) is soldered to the red wire on the motor, the black wire (the cathode of the scallop) is soldered to the blue wire on the motor.That's it, the wiring is done.Pump a little thermal paste on the fan cage then put the clams on.Please note that the face with the word is the cold side and the face without the word is the hot side.After placing the clams on, inject a little more thermal paste onto the face without the word of the scallop.Spread it out evenly and put the aluminum heatsink on itTo fix the aluminum plate with the fan cage, you can use a wire to tighten it.Then you cut off the excess drawstring on the insideSo we're done.When finished, the fan will have a shape like this, it looks quite fancy.When the fan is operating, the heat will be generated from the hot side of the shell and transmitted through the aluminum heatsink.The wind from the fan will help blow this warm air to your hand.To use this mini fan, you need to power it.The voltage is 12V DC with amperage from 1A to 5A.You can use adapters of network router models for convenience.In the process of using this mini fan works quite effectively.Before the fan was turned on, the room temperature was nearly 26 degrees Celsius.Immediately after running the fan for more than a minute, the temperature of the wind in front of the fan increased by nearly 30 degrees Celsius, the warmth was very moderate and pleasant.What are you waiting for?Start making one for yourself right away to dispel the cold of this winter.Good luck!Thank you Hanoi Components Store for helping us make this article.Readers who have questions during practice can join the Facebook group here to ask questions and discuss.HOME FEATURESThe selling price for this couple is VND 5,490,000 and VND 9,490,000 respectively for LinkBuds S and WH-1000XM5.Responsible for content management: Ms. Nguyen Bich Minh Hanoi: 20th Floor, Center Building - Hapulico Complex, No. 1 Nguyen Huy Tuong, Thanh Xuan, Hanoi.Email: info@genk.vn Phone: 024.73095555, ext. 62374 Representative office in HCMC: 4th floor, Building 123 Vo Van Tan, Ward 6, District 3, City.Ho Chi Minh© Copyright 2010 - 2022 - VCCorp Joint Stock Company Floor 17, 19, 20, 21 Center Building - Hapulico Complex, No. 1 Nguyen Huy Tuong, Thanh Xuan, Hanoi.License to set up a general website on the network No. 460/GP-TTĐT issued by Hanoi Department of Information and Communications on 03/02/2016Advertising support hotline: 0942 86 11 33 Email: giatrixahoi@admicro.vn Support & Customer Service: Admicro Address: 20th Floor, Center Building - Hapulico Complex, No. 1 Nguyen Huy Tuong, Thanh Xuan, Hanoi.