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 Post subject: Re: Show off your fans and circuits!
PostPosted: Thu Jul 31, 2008 4:06 am 
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Joined: Thu Jul 17, 2008 7:51 pm
Posts: 38
too kewl! It looks like it is a tight fit but as long as it works ;) Excellent job!!!

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 Post subject: Re: Show off your fans and circuits!
PostPosted: Wed Aug 20, 2008 7:42 am 
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Joined: Mon Aug 11, 2008 4:50 am
Posts: 8
My first fan is without the case anymore ... I glued it on a pen .. it has A LOT of wire (do not know how many turns)
Attachment:
File comment: harry first bedini 80mm fan top
harry first bedini fan top.jpg
harry first bedini fan top.jpg [ 13.22 KiB | Viewed 760 times ]

Attachment:
File comment: harry first bedini fan 80mm bottom
harry first bedini fan bottom.jpg
harry first bedini fan bottom.jpg [ 24.76 KiB | Viewed 760 times ]


This is my second fan .. it work as good as the first one .. I bought 2 of these 120mm fan because I want to get more coils, but I was wrong, the first fan (80mm) has more coil turns
Attachment:
File comment: harry second bedini 120mm fan.jpg
harry second bedini fan.jpg
harry second bedini fan.jpg [ 22.36 KiB | Viewed 762 times ]

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 Post subject: Re: Show off your fans and circuits!
PostPosted: Sun Aug 24, 2008 3:23 am 
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Posts: 67
wow excellent. I love the pen fan! Very original. remember just because the fans are doing work doesnt mean they cant be cool looking. Heres one Imhotep rescued for me. It was in my computer but had stopped working. Now its energizing batteries.

This fan is a special fan and it is undergoing test at this point but details will be released soon. but I am showing it because it shows that the fans can be creative and be intergrated into home in a nice decorative style


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 Post subject: Re: Show off your fans and circuits!
PostPosted: Thu Aug 28, 2008 10:09 pm 
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Posts: 1
I made this setup using PNP transistor TIP32C. Fan from PC power supply

Need voltage 24 volts for good operation. :D


Attachments:
bedinipnp.JPG
bedinipnp.JPG [ 14.35 KiB | Viewed 735 times ]
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 Post subject: Re: Show off your fans and circuits!
PostPosted: Fri Aug 29, 2008 5:30 am 
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Is t1 the windings? or is it simply your substituting the windings with a transformer and pnp instead of an npn? And getting the same charging effects? looks cool :)

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 Post subject: Re: Show off your fans and circuits!
PostPosted: Tue Oct 14, 2008 1:03 am 
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T1 is a electromagnet of some sort. Patmac seems to be implying that it is a transformer of some sort, or at least that the winding ratios of the primary and secondary are not 1 to 1. You must have rewound it if it is from a Computer fan, unless there were some specifications on the orignal coils handy. The use of a PNP is different, there are some cool circuits which utilize the PNP and NPN to isolate the power windings between pulses ;)


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 Post subject: Re: Show off your fans and circuits!
PostPosted: Tue Mar 10, 2009 2:40 pm 
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Joined: Thu Feb 12, 2009 11:02 pm
Posts: 10
Hi all

Finally I got some results... I'm very happy. Thank you all.


Attachments:
File comment: Finally!!!!!
My, replication of that great circuit.

p3100002_1.jpg
p3100002_1.jpg [ 82.21 KiB | Viewed 470 times ]
File comment: I have no idea of the fan model... I found it, half broken in the street.
Initially it had only one wire (pretty thick... only 20 turns in each of the four metal poles).It did not work 8-(
Now it has, bi-filial wires as it is sayd in the video, awg30 and 33, around 66 turns per pole. Now it turns 8-)

It is driven by a 9v alkaline, and it is charging a 9v-group of 6 AA batteries (alkaline and NiMh)

Do anyone know any nice cheap method to measure the actual charge of the battery???
I have no idea if the batteries are getting charged...

p3100003_1.jpg
p3100003_1.jpg [ 76.37 KiB | Viewed 470 times ]
File comment: The circuit it is exactly as the basic one post in "schematics".
And these are the spikes I get at the "charging battery terminals" (without the battery, of course).
f**k!!! These are 150V.
Will that kill me if I put the finger in there?? Something tells me, there is not enough power in the circuit to give any substantial intensity... but... I don't feel like trying. Anyone had any nice experience putting the finger in those spikes?????

p3110005_1.jpg
p3110005_1.jpg [ 81.2 KiB | Viewed 469 times ]
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 Post subject: Re: Show off your fans and circuits!
PostPosted: Tue Mar 10, 2009 3:03 pm 
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Joined: Thu Feb 12, 2009 11:02 pm
Posts: 10
When adjusting the pot, I can get the spikes in groups, like: 15ms spikes, 20ms no spikes. The duration of each spike is bout 0.4ms
When reading the Vbe, I get:
- 20ms where the Vbe is negative, so the transistor is closed.
- 15ms of 0.4ms pulses where the transistor is opening and closing.


So: In the 20ms where the transistor is closed, the source battery is not uncharging??? But at the same time, the charging battery it is not getting charged.
So, the hole interesting procces it is only happening 15ms (every 35ms).
Has anyone try to make like a "symetrichal" supply system, or rectify (diode bridge) the coils, to get spikes the 100% of the turning cycle????

Thank you all.
Wangha


P.S: Sorry for my super huge pictures, but I could not manage to get them smaller


Attachments:
File comment: These are the "charging battery" spikes, with a bigger time-window. Seems they are there only 40% of time, like: 15ms spikes, 20ms no spikes.
p3110006_1.jpg
p3110006_1.jpg [ 63.11 KiB | Viewed 460 times ]
File comment: And this is the Vbe (base-emiter-voltage). 1volt/div
p3110008_1.jpg
p3110008_1.jpg [ 57.18 KiB | Viewed 460 times ]
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 Post subject: Re: Show off your fans and circuits!
PostPosted: Tue Mar 10, 2009 10:55 pm 
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Joined: Tue Nov 11, 2008 8:05 pm
Posts: 172
Location: Indiana, USA
Welcome WANGHA!
Nice work, you will be a great addition here I suspect!

Rob

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 Post subject: Re: Show off your fans and circuits!
PostPosted: Wed Apr 15, 2009 9:46 am 
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Joined: Wed Apr 15, 2009 9:31 am
Posts: 1
Hello everyone, it is my Bedini fun (mixer motor) ;) replica. Interesting moment: Rotor dont rotating (have hig.fr. vibrating) but neon bulb work and non linear output have: 40V.

Motor: (from mixer, 220V 50Hz)
Neon bulb: 220V
Input: Pb.gel 12V 7Ah (15 V in d.tester)
Output: Linear 16V and Non Linear (osc.) 40V

Link: www.2cut.lt/video/MOV00001.3gp (for QT player)

Thank you
R.


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