Step 1: Needed materials and Basic Idea
Activated Carbon
Glue
Window screen
pantyhose
Modeler's plywood
Basswood or balsa
12 volt AC/DC converter
If you have enough modeler's plywood, then you can make the frame out of that, but to save money, I chose to glue my frame together with some balsa wood I had. I had everything but the activated carbon, which you can purchase at pet stores, already at my house.
The purifier works by drawing air through the carbon and forcing it out through the top. The picture below is a cutaway view. The carbon surrounds the purifier on four walls with the fan on the top. The large surface area allows the air to pass through slowly which cleans the air much better.
this is nice... and i could use it as a base research for my papers... thanks... but could a fan run in a 5 volts ac??
I like this. Looks like I could make a less precise version out of anything, even popsicle sticks. I'm curious about the air flow, though. Especially after the carbon has settled, how hard is that fan working? I ask because I'd want to reverse the direction of the flow and make it flatter rather than cubed. Like you said, forced air is more difficult. Also, how often would the carbon need to be refreshed?
Activated coconut carbon, Bentre provine, Vietnam
You can buy these dryer sheets that are designed to give you clothes a nice smell, you should buy a box of them and tape them to the window screen.
you can buy surgical masks that have a type of active carbon material layered between two needle punched non-woven fabric they are great.
the needle punched fabric filters out dust
and the active carbon material can filter out bad smells
the surgical mask can also filter out viruses and bacteria so it works like a hepa filter! all you have to do is cut of the ear loops and the sides so the pleats open up then you can use it. it costs like £3.00 for 50 masks so it is so cheap and they last for about 1 month.
I have put my fingers across a 12v 5a source and i didnt feel anything. You need at least 40 volts with moist skin to even feel anything.
Ampere = Volts/Resistance, in this case 12v / 1000r (resistance of the skin)
Therefore Wally_Z's arguments are invalid.
Some people need to know what they are talking about, SERIOUSLY!!!!