IST'S JOULE THIEF HEATER UNITS

[jeanna]

You could also use convection.

In the 80's around Boston, there was a buzz about a thing called a PAL (not the police athletic league!)
This was a box added to the outside wall of the house that had a 4' x 8' glass/ish panel facing out.
You chose the south side of the house of course, and there were 2 vents that went through the house wall. One on the bottom and one on the top.

The cooler house air was sucked into this when the sun got onto the unit and then the hotter air at the top floated into your house. There was black on the back wall. You opened and closed the vents either by hand or you rigged up a sensor.

I knew someone with this and during the long winters when my heat never turned off, her house was very warm when she returned from work and the heat didn't go on til late at night.

Jesus got a stepper motor to work with a joule thief.
You would not need much more than a 5w computer fan just to move the hot air out. I don't recall if my friend had any fan... but that thing really worked. Boston winters are very cold and her house was always warm in the day and evening from this device.

Things like this never get much press because they are so low tech. After a while people forget about it. But it did work.
My south wall was in the shadow of another house or I would have had one, too.

But IST was making hot heat from a jt type design and these things are supposed to only make cold electricity.
I thought there would be more posts on this by now.

So, Infringer, will you be making one of these?

[DreamThinkBuild]

A booster method to the passive solar collector is to put a couple low watt infrared heat lamps in the collector. Then run them off a solar charged battery through an inverter during the day time. Most pet stores sell 50 to 250watt infrared heat lamps.

This shows the basic insides of a infrared heater.
http://gogreensavegreen.tv/infrared-heaters/inside.html

Has a Joule Thief been able to run a infrared heat lamp? Has a 12v Joule Thief been made with more output power?

[jeanna]

Hi Dream,
I think it needs a different approach.
I think the direction to come from is perhaps to create eddy currents with the pulses.
If the formula for success can be found there, then we can make hot calrods and cook... or hot iron stix and submerge them to heat water. Then showering water can run through the heated water etc.

I used to work with the 'pap-imi' device. Briefly. Just long enough to get a grasp on the power of pulsing. I also got a chance to peer inside because the owner had to fix it and he let me have a look.

It was a timer switch running a transformer which created a spark.
The spark landed on a very large bolt.
This bolt was attached to a long steel chord which was looped half way, and then it returned to the bolt. It was covered with clear tubing.

This loop created a very powerful pulse that went out in ring form and was purely magnetic. But the magnetic pulse would travel 3 inches either way. If you put it on a part of your body, the mag would heal anything.

OK, the whole steel cord would warm up. I would need to cool it in water every ten minutes.
Now, the frequency of pulses was very low and the voltage was very high... sound familiar?

The recommended frequency went from 2.5hz to 8hz. 8 pulses per second had lower voltage but also went less deep into the flesh and was good for eyes and surface/skin problems.
1pulse per second could make you feel you had just been punched.
The explanation from the physicist inventor was that there was naturally a build up time needed for the strongest voltage/mag pulse.

Anyway, all these things fit together and they are good to describe to this group.

My reason for putting it here now, is that the probe would warm up.

So, can we use this for a purpose?

I think maybe.

jeanna

[mscoffman]

ill probally use a computer power supply for the source ...  not sure yet ...

ist!

When one uses a spare PC computer power supply one needs
a load, or dummy load on the +12VDC leads or the supply
may not voltage regulate properly. I use an old diskdrive
with no cable as a dummy load. Bedini people don't
load their supplies right, then their projects melt.

:S:MarkCoffman

[DreamThinkBuild]

Hi Jeanna,

I think the direction to come from is perhaps to create eddy currents with the pulses. If the formula for success can be found there, then we can make hot calrods and cook... or hot iron stix and submerge them to heat water. Then showering water can run through the heated water etc.

That is a really great idea, almost like an on-demand water heater. The magnetic heater I built using a motor wasn't very efficient. A pulsed coil would need a lot of power to create the same amount of Gauss that the magnets had; >100 lbs pull force.

I've never heard of the 'pap-imi' before thank you for sharing Jeanna. The 'pap-imi' device sounds like a low level EMP generator. Would the heat in the steel cord be caused by the resistance since the frequency is so low(almost like hooking up a DC battery to a wire, pulsed DC)?  That would be great as a low watt heating element. Any ideas on the operating voltage/spark of the 'pap-imi'?

The 'pap-imi' reminds me of reading on a EMP pulse generator with 140khz, 2inch ring with 10-30 windings would disable electronic equipment around it at about 5inches. Turning almost any metal object/part in it's range into a radiating antenna. The more power you put in the greater the radius/power. I always wondered if you encircle it with dipoles if you could keep a constant charge on the radiating antennas with a tuned pickup coil in the center to use as power tap. Almost like Don Smith's device but with a EMP burst in the center. Just another idea I haven't tried yet.