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**~Imhotep~** · **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!!!

hmaxf2 · **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)

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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

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**~Shiva~** · **Joined:** Thu Jul 17, 2008 9:53 pm **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

patmac · **Joined:** Wed Aug 20, 2008 4:47 pm **Posts:** 1

I made this setup using PNP transistor TIP32C. Fan from PC power supply

Need voltage 24 volts for good operation.

**~Shiva~** · **Joined:** Thu Jul 17, 2008 9:53 pm **Posts:** 67

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

Ren · **Joined:** Fri Aug 29, 2008 11:25 am **Posts:** 62

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

wangha · **Joined:** Thu Feb 12, 2009 11:02 pm **Posts:** 10

Hi all

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

wangha · **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

JustAnElectrician · **Posted:** Tue Mar 10, 2009 10:55 pm

Welcome WANGHA!
Nice work, you will be a great addition here I suspect!

Rob

NURBS · **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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