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Author Topic: Joule Thief  (Read 6275691 times)

xee2

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Re: Jule Thief
« Reply #13080 on: March 21, 2010, 06:12:06 AM »
 :(  The fool proof two transistor circuit I posted turns out to not be so fool proof after all. The TIP31C will overheat if the power supply is able to supply high current. A resistor of a few ohms had to be placed in series with the power supply to prevent overheating. The resistor is not required with the cell phone charger since it will not supply sufficient current to overheat the TIP31C.

A better solution is to only use the 30K resistor to start the circuit. In this case the TIP31C does not overheat.
« Last Edit: March 21, 2010, 06:52:13 AM by xee2 »

innovation_station

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Re: Jule Thief
« Reply #13081 on: March 21, 2010, 06:43:35 AM »
i wonder why the 3055 cans rarely get hot .. 

many times i have used them 12vdc car battery .. with out heat .. 

even tho i have fryed 1n4007 .. up in smoke  the transistor .. ice cold ..

i used 1000v 3 amp and they get burning hot ..  while chargeing a boost cap ..

agin 3055 can ice cold ..  270 ohm .. 0 portection 4001 feedback ..

?

W

detrix42

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Re: Jule Thief
« Reply #13082 on: March 21, 2010, 03:55:33 PM »
GOOD JOB
Is this not a wonderful circuit?

It is possible to get 1000 volts from a 1.2v battery so, maybe.
The volts are spikes, however.
They work well with fluorescent bulbs and leds.
I will watch your youtube videos to see if I think your neuman motor can use spikes.
That would be very cool if so, because you could use a AA or 2 of them instead of a 12v. But I might be greedy. ;D

So, welcome to this illustrious thread of experimenters. I am glad to see a motor maker here!

jeanna

Hey, thanks Jeanna.  I would accept even say 200 to 300 volts right now.  I believe I just need a big enough cap to  capture the spikes and deliver a DC voltage to my motor.  Now I am trying to remember how to hook up multiple caps.  In series, does their voltage capacity increase or parallel?

detrix42

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Re: Jule Thief
« Reply #13083 on: March 21, 2010, 03:57:47 PM »
detrix,

  There are videos online with the JT running small motors and filament bulbs
http://www.youtube.com/watch?v=eiLcbTBewhw

E

thanks for that video link. Now to watch it a few hundred time to understand everything he is doing.

slayer007

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Re: Jule Thief
« Reply #13084 on: March 21, 2010, 04:06:53 PM »
In this video I wanted to see the best performance I could get out of a 1.3v AA battery.
The Exiter is running right off the AA battery lighting a 15W FL tube while lighting 40 LED'S and charging 10 other AA batteries.
It's using around 25 mA from the rechargable battery.

Here is the video.

http://www.youtube.com/watch?v=Xyg31OSkAIE

innovation_station

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Re: Jule Thief
« Reply #13085 on: March 21, 2010, 05:41:47 PM »
Hey, thanks Jeanna.  I would accept even say 200 to 300 volts right now.  I believe I just need a big enough cap to  capture the spikes and deliver a DC voltage to my motor.  Now I am trying to remember how to hook up multiple caps.  In series, does their voltage capacity increase or parallel?

i find i can charge my caps .. with 45vdc rectified as per meter ..

i can easly dubble the voltage in a cap ..

so i have no trouble to fill a cap to 100vdc from a 45 volt feed ..

: )

ist!

nice video slayer007

check out this one ...  MAKE COIL?  LOL 

multi stack ....  caped bottom coil  or shorted .. : )

http://www.youtube.com/watch?v=lslHtCUSfN4&feature=related

xee2

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Re: Jule Thief
« Reply #13086 on: March 21, 2010, 06:45:33 PM »
I have been experimenting with a two transistor version of the kazm/slayer007 toroid circuit. After trying many configurations, I think the best fool proof solution is to use a variable resistor. The circuit will always start with the resistor set to 30K and the resistance can then be increased if necessary to prevent the TIP31C from overheating.


crowclaw

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Re: Jule Thief
« Reply #13087 on: March 21, 2010, 07:07:07 PM »
@ detrix42,

You can series connect your capacitors to match the total voltage you are putting across them (check polarities) in this configuration you reduce the capacitance value i.e. 2 x 100uf in series = 50uf.  Try and keep the values of each the same including the working voltages. e.g.  200volts... use 2 x 100v capacitors in series.  For capacitors connected in parallel the capacitance value adds together, the voltage remains the same.

detrix42

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Re: Jule Thief
« Reply #13088 on: March 21, 2010, 09:14:57 PM »
@ detrix42,

You can series connect your capacitors to match the total voltage you are putting across them (check polarities) in this configuration you reduce the capacitance value i.e. 2 x 100uf in series = 50uf.  Try and keep the values of each the same including the working voltages. e.g.  200volts... use 2 x 100v capacitors in series.  For capacitors connected in parallel the capacitance value adds together, the voltage remains the same.

cool, my memory is in tact.  wow.  There are a couple of 330uF/200v caps in a burned out computer power supply that I want to use then.  I am trying to look up a transformer that I pulled out of that power supply. I did a google search and found nothing.  the numbers on it are   --  6C03313120 MORETEC 99235C.  How do I get a pin diagram for it???

tysb3

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Re: Jule Thief
« Reply #13089 on: March 21, 2010, 09:57:49 PM »
Hi,
How to feedback JT.
This is only idea. Maybe someone have a knowledge how to create driver ?  I don't have.
« Last Edit: March 21, 2010, 11:07:53 PM by tysb3 »

jadaro2600

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Re: Jule Thief
« Reply #13090 on: March 21, 2010, 11:35:20 PM »
cool, my memory is in tact.  wow.  There are a couple of 330uF/200v caps in a burned out computer power supply that I want to use then.  I am trying to look up a transformer that I pulled out of that power supply. I did a google search and found nothing.  the numbers on it are   --  6C03313120 MORETEC 99235C.  How do I get a pin diagram for it???


You'll have to measure the ohmic resistance between the leads
, there should be 6 leads, or Five leads and one ground. If there are four leads, then it shouldn't be a problem, you should also ask yourself why the power supply burned out?

Any two leads with an ohmic resistance are a coil, ..6 lead transformers are usually center tapped - this lead can be ignored if you want.  Using the two leads with the least ohmic resistance and the two leads with the most ohmic resistance will give you a voltage boost.

for instance, if there are 6 leads where there is ohmic resistance between 1 2 and 3, and the ohmic resistance of 1-2 is 20ohm, and 2-3 is 20 ohms, and 1-3 is 40 ohms, then pin 2 is the center tap.  Just as well of the other pins, if there is 40 ohms between 4-5 as well as 5-6, the pin 5 is center tap.

using pins 1 and 2 as the coil to base, and pins 4 and 6 as coil to collector will give you voltage boost because there are more windings on coil 4-5-6 than 1-2-3.  This will give you roughly voltage boost V ..while using pins 1 and 3 will give you voltage boost V/2.

IF you follow the diagram that I made for you on your thread, then you won't need a secondary, just a toroid and some mag wire, two capacitors and a resistor and a transistor.  You should not use the secondary, it's a waste of time for your particular circuit because it simply will not provide enough current between commutation switches.

In my schematic, the bulk of current will flow through the motor and not the transistor.  When skipping commutators, the transistor circuit will activate and produce a higher voltage, until it hits another commutator and discharges across the coil along with the current from the battery.

Eastov

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Re: Jule Thief
« Reply #13091 on: March 22, 2010, 12:15:47 AM »
Dextrix,

   Here's another filament bulb JT circuit that I've been toying with, but mine a non-wireless version.  He's got a link in the description which shows schematics and details. 

http://www.youtube.com/watch?v=2ODW-ntPHSU

E

xee2

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Re: Jule Thief
« Reply #13092 on: March 22, 2010, 12:42:12 AM »
@ Eastov
check: crowclaw post on  January 22, 2010 Reply 11980


xee2

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Re: Jule Thief
« Reply #13093 on: March 22, 2010, 12:44:13 AM »
deleted by xee2 -  forum posting error

innovation_station

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Re: Jule Thief
« Reply #13094 on: March 22, 2010, 05:38:58 AM »
i wound a new gold mine 1"

cat5 wire 1 twisted pair 1 untwisted pair so 4 wires total ..

so there 3 sepreate wires to wind the twisted one is the jt the other 2 outputs ..  all wound togather ..

3 turns per lap ...  so 120 240 360  lap 1 then lap 2 right after  and same with lap 3

this is what it looks like

so as the jt pulses it high speed the core does 3 laps ..

i would expect vhf from this coil ..

ist!