Friday, January 13, 2017

Turn PC Fans Into DC Generators Post-Apocalypse Simplicity!

The reason I am posting this is so YOU CAN CHECK OUT THE RECTIFIER HE IS USING.

I didn't know it was that simple to convert AC to DC!

The funny thing is that I understood instantly the principle of what he is doing and I never thought of it! I own $40 rectifier boards for AC-To-DC wind turbines and always wondered what I would do if one of them broke down in the aftermath. This is the sole reason I have always encouraged people to use pure DC turbines as generators because they will work without a rectifier and a simple shunt if they generate too much current. Now that I know this is possible it opens the possibility of using a lot of different kinds of fans that normally output AC and can be found in almost ANYTHING in a post-apocalyptic world.

If you don't mind the cosmetics of the situation, you can mount these in arrays and use micro-wind generation of electricity from what is literally ubiquitous junk found everywhere!

With motors balanced on these kinds of ball bearings you could use different kinds of motion to generate current. For example, putting them with blades under a downspout so whenever water pours through it the blade spins. During a rainstorm you could charge your batteries just from the flow of water down a gutter!

We will be getting into all this in 2017. Vault-Co is about to get really good. Those of you who have been reading for a while are going to be pleasantly surprised at the change in direction and content that is coming. I am very interested in these kinds of technologies that turn junk into generators without monolithic wind turbines and huge rectifier boards, etc. They may seem tame individually but once you have a dozen wired together and working you're starting to talk some serious juice coming out to power a shelter or retreat which is itself designed along low voltage philosophies.


grant bovee said...

Nice! Thank You

bob kek mando ( Death To The Boor-geois, Keks To The Lol-etariat ) said...

the rectifier he's building out of discrete components is the diode variant of a Wheatstone Bridge. you can also purchase IC versions ( all diodes in a single pack with four pinouts ) really cheap, but it's always good to know how to fab one by hand.

the bridge rectifier is the first thing they teach you about when they move from DC to AC circuits.

Texas Arcane said...

@bob kek Mando

I have an associate's degree in electronics and know what a bridge rectifier is and how it works theoretically - I always assumed more components would be necessary to balance out the current pulses. When I saw this design, I realized you could get by without that stuff for something as simple as charging batteries.

bob kek mando ( Death To The Boor-geois, Keks To The Lol-etariat ) said...

a - a lot of stuff will function on a pretty trashy input voltage, the caps and coils are just there to smooth things out a bit

b - batteries function ( when being charged ) as very large capacitors ... so you'll get a lot of signal smoothing simply from hooking them up