Make a 12V mini fan heater using PTC heater and an old ATX power supply case

Needs:
- Old ATX case with good fan (or any suitable case you have)
- 12V PTC heater → buying link:
+ https://s.click.aliexpress.com/e/_AUfmjq
+ https://s.click.aliexpress.com/e/_9H1uJW
+ https://s.click.aliexpress.com/e/_AES1ig
+ https://s.click.aliexpress.com/e/_AVcuu0
- PWM 12V DC Motor Speed Controller Module
+ https://s.click.aliexpress.com/e/_9yTIac
+ https://s.click.aliexpress.com/e/_9jgjeg
+ https://s.click.aliexpress.com/e/_9Q8Pmg
- Female DC jack
- 12V power supply
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Positive Temperature Coefficient (PTC) Heater
Electrical & mechanical design Engineers have been using “Positive Temperature Coefficient” heaters in the equipment for years. They recognize the unique properties of the PTC heaters that make them more reliable, safer, cost-effective than traditional resistance wire-type heaters. Consider the PTC heaters compared to resistant heaters as LED light bulbs are to incandescent bulbs. They have comparable lower energy costs and longer life.
Typical heating elements that use a resistance wire to generate heat, PTC heating elements are made as ceramic stones, doped with barium titanate. These manufactured ceramic stones have very unique characteristics as semiconductors whose properties can be precisely determined during their design and manufacture. PTC devices do not burn oxygen making them safer to use in controlled environments. This also makes them more energy efficient.
(Source: dbkusa.com)
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