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 Post subject: My very successful replication of Imhotep - Bedini Fan
PostPosted: Wed Dec 04, 2013 2:31 pm 
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I managed to replicate Imhotep fan with ease.
It is very interesting project to do.

So i continued to experiment even more and managed by accident to get solid state (no moving fans) running bedini circuit by using two fan cores connected in parallel.
I even removed fan blades and left bare cores and it is working even better.

I get around 135 V spikes from circuit.
Circuit itself consumes 1.4 W with no load connected
Transistor never gets hot no matter what you connect at output.
So far i run bright LEDs, charged big capacitors, charged some small batteries and even saw some tiny sparks.
What is interesting is that i never saw my neon light lit which is odd.

If anyone interested i can post pictures and instructions how to replicate this slight modification.


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 Post subject: Re: My very successful replication of Imhotep - Bedini Fan
PostPosted: Fri Dec 06, 2013 2:57 pm 
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Would be nice tarcius :)


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 Post subject: Re: My very successful replication of Imhotep - Bedini Fan
PostPosted: Fri Dec 13, 2013 1:48 pm 
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Sorry for the late reply, been fixing some things up after typhoon Yolanda hehe.
If you have a load connected to the output the neon will not light up, the neon acts like a safety valve when there is no load.


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 Post subject: Re: My very successful replication of Imhotep - Bedini Fan
PostPosted: Tue Dec 17, 2013 12:50 pm 
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mbrownn wrote:
Sorry for the late reply, been fixing some things up after typhoon Yolanda hehe.
If you have a load connected to the output the neon will not light up, the neon acts like a safety valve when there is no load.


In my setup no matter if load is connected there is no light there.

Maybe is broken somehow but i don't see any mechanical damage to it and leads are good.

Hope it's all fine after the storm.


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 Post subject: Re: My very successful replication of Imhotep - Bedini Fan
PostPosted: Thu Dec 19, 2013 11:17 am 
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Now to my instructions:

I used this shematic
Image

Used fans exactly like these ones:
Image
One is 80mm other is 120 mm standard pc fan:

My setup looks like this right now and works.
Image

I marked wires with numbers 1-4 and also added numbers to first fan core poles to show where wires are connected.
Number 1 wire goes to the potentiometer.
Number 2 wire goes to the colector
Number 3 wire goes to the (-) output and (+) input
Number 4 wire goes to the emiter

The resistor that i added goes between wire (1) and potentiometer and his value is 560 Ohm
You may not need this resistor as you may have different potentiometer range but this setup works without this resistor.

If setup do not start when connecting power supply try set potentiometer to min value.

when you hear faint whining from cores than it's operational.
if someone knows how this circuit operates and what are the relation with second fan core and why this works in solid state please comment.

If someone have additional questions feel free to ask.


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 Post subject: Re: My very successful replication of Imhotep - Bedini Fan
PostPosted: Thu Jan 30, 2014 11:28 pm 
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hope you got your fan working :)


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 Post subject: Re: My very successful replication of Imhotep - Bedini Fan
PostPosted: Fri Feb 14, 2014 6:05 pm 
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mbrownn wrote:
hope you got your fan working :)


Hi Mbrown.
I am unable to get my fan working. I dont know why. I purchased a 12 v fan. I separated the two wires connected to the common pole on the stator and made 4 poles. I did all the connections as shown in the diagram. I used 2n3055 as well as Tip31c.I used 1N4007 as well as UF4007.But the fan after I give a spin hardly spins for a second and then stops. I Want to fix this problem any how. Plz help me. Its really annoying me. 1 querry the pcb that is originally connected to the stator should be removed or kept as it is after the stator winding modification. Bcz I removed it completely. Its Just The stator with four poles and 4 seperate wires coming out of it. and the the Magnet. And the configuration as per the schematics.
I hope for your reply


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 Post subject: Re: My very successful replication of Imhotep - Bedini Fan
PostPosted: Thu Feb 20, 2014 3:40 pm 
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Akshadeep27 wrote:
mbrownn wrote:
hope you got your fan working :)


Hi Mbrown.
I am unable to get my fan working. I dont know why. I purchased a 12 v fan. I separated the two wires connected to the common pole on the stator and made 4 poles. I did all the connections as shown in the diagram. I used 2n3055 as well as Tip31c.I used 1N4007 as well as UF4007.But the fan after I give a spin hardly spins for a second and then stops. I Want to fix this problem any how. Plz help me. Its really annoying me. 1 querry the pcb that is originally connected to the stator should be removed or kept as it is after the stator winding modification. Bcz I removed it completely. Its Just The stator with four poles and 4 seperate wires coming out of it. and the the Magnet. And the configuration as per the schematics.
I hope for your reply


I suspect your fan might have the high resistance coils. if so a little higher input voltage and tuning the pot should see it working


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 Post subject: Re: My very successful replication of Imhotep - Bedini Fan
PostPosted: Fri Feb 21, 2014 9:57 am 
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mbrownn wrote:
Akshadeep27 wrote:
mbrownn wrote:
hope you got your fan working :)


Hi Mbrown.
I am unable to get my fan working. I dont know why. I purchased a 12 v fan. I separated the two wires connected to the common pole on the stator and made 4 poles. I did all the connections as shown in the diagram. I used 2n3055 as well as Tip31c.I used 1N4007 as well as UF4007.But the fan after I give a spin hardly spins for a second and then stops. I Want to fix this problem any how. Plz help me. Its really annoying me. 1 querry the pcb that is originally connected to the stator should be removed or kept as it is after the stator winding modification. Bcz I removed it completely. Its Just The stator with four poles and 4 seperate wires coming out of it. and the the Magnet. And the configuration as per the schematics.
I hope for your reply


I suspect your fan might have the high resistance coils. if so a little higher input voltage and tuning the pot should see it working



Yes Finally got my fan working, But I would like to know hoe to measure th output voltage.


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 Post subject: Re: My very successful replication of Imhotep - Bedini Fan
PostPosted: Tue Feb 25, 2014 9:52 am 
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The only way is with an oscilloscope


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