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Author Topic: Need help identifying/replicating capacitor to DC circuit  (Read 7990 times)

Goat

• Hero Member
• Posts: 633
Need help identifying/replicating capacitor to DC circuit
« on: February 13, 2009, 05:40:27 PM »
@ All

I posted the following on the Jule Thief thread earlier today but would like to know if anyone else on the forum knows of a circuit that does the following:

@ All

Just ran across this little article where a small wind turbine is used to charge up a capacitor and power an electric toy car at
http://www.treehugger.com/files/2007/08/wind_turbine_to_1.php .

Since we can charge up caps to hundreds of volts in a small amount of time using the JT or Fuji circuits it seems to me that if a circuit like the one used in this toy car to convert the potential in the capacitor to drive a small DC motor could be used to slowly bleed off the cap back to the input side, couldn't it?  If so then the small amount of power needed to drive the JT or Fuji circuit could load many more caps if they were in parallel to the first cap, then we'd get even more energy to play with.

Anyone know of a circuit to slowly bleed off a cap at a certain voltage, say 1.5 to 12 VDC?

Anyways, just a thought.

The main reason I'm starting a new thread is so that it doesn't derail the JT thread and to expose it to all EE's on this OU forum that could help. So, if anyone knows of this type of circuit and could post a schematic on how to replicate the circuit it would be greatly appreciated.

Regards,
Paul
« Last Edit: February 14, 2009, 04:03:20 AM by Goat »

jadaro2600

• Hero Member
• Posts: 1257
Re: Need help identifying/replicating capacitor to DC circuit
« Reply #1 on: February 13, 2009, 11:32:42 PM »
http://translate.google.com/translate?hl=en&sl=ja&tl=en&u=http://www.loopwing.co.jp/en/entop.html

Looks like a loopwing!

Children are too impatient for this type of device, you might as well buy them a kite.

Goat

• Hero Member
• Posts: 633
Re: Need help identifying/replicating capacitor to DC circuit
« Reply #2 on: February 14, 2009, 12:00:17 AM »
@ jadaro2600

Thanks for the reply but the question was, do you know of this circuit and how it functions in taking the voltage from a capacitor and slowly leaking it to a dc motor or dc circuit?

Regards,
Paul

weri812

• TPU-Elite
• Full Member
• Posts: 161
Re: Need help identifying/replicating capacitor to DC circuit
« Reply #3 on: March 12, 2009, 04:33:58 AM »
Hello Paul

just ordered this toy  be here in 7-14 days  will let you know

God Bless
wer

jadaro2600

• Hero Member
• Posts: 1257
Re: Need help identifying/replicating capacitor to DC circuit
« Reply #4 on: March 12, 2009, 09:42:13 PM »
There is most likely a resistor bridged with a diode.  This would allow current to flow more easily in than out (so to speak).

There may in fact be a battery there in it's place - this would allow for a longer duration voltage controlled expenditure.

The diode in question may be a zener diode, activated by a transistor.   The above person may be able to shed a little light on this matter.

I recently took apart a plane that you mount on a battery charger - and it spins up and maintains quite a charge.

The circuit in this particular plane isn't that complicated - it looks like this:  The one you have pictured is more likely got a few more parts to it.

weri812

• TPU-Elite
• Full Member
• Posts: 161
Re: Need help identifying/replicating capacitor to DC circuit
« Reply #5 on: April 08, 2009, 06:34:12 AM »
Hello Paul

THE LOOPWING CAME TODAY!!!!!!
the atatch picture is a croud drawing but  correct.
the  cap is Digi-Key Part Number P6966-ND  2.3v 3.3f
the gen motor  discribed in the pdf
was not able to look up the  run motor ff030sa09210    ln246x16   d/v 5.9 china

have not assembled the system yet  so i do not know if it works yet. it is 12:30 am  my time  need some sleep
see ya later

God Bless
wer

Goat

• Hero Member
• Posts: 633
Re: Need help identifying/replicating capacitor to DC circuit
« Reply #6 on: April 08, 2009, 01:48:48 PM »
@ Wer

Thank you very much for taking the time to post your findings!

It seems like an amazingly simple circuit, I wonder if it is able to run the motor for the length of time as the above article mentions "It only takes 5 minutes of exposure to light wind to generate enough power to run the car for 3.5 hours.".

Please let us know if it functions as advertised.

Regards,
Paul

weri812

• TPU-Elite
• Full Member
• Posts: 161
Re: Need help identifying/replicating capacitor to DC circuit
« Reply #7 on: April 08, 2009, 02:32:30 PM »
no that figure is wrong

5 m gets 3 men 5 sec  not 3.5 h

in the next couple days i will put it togeather  and try running it.

God Bless
wer