I didn't forget about you...

Hello Esstee,

First off, I'd like to reiterate that I am a total noob to all this.  (Though I am a seasoned computer tech.)  Hopefully as we put our heads together (i.e., pool our ignorance), we'll be able to learn how to build some effective DIY mag pulsers.  And perhaps others (like jaguar57) will correct me where I'm wrong and offer some tips to help shorten our learning curve and expenditures.

Regarding your previous posts... 

Dr. Garry Gordon makes a great case for the need, science behind, and benefits of PEMF.  Any Big Pharma brainwashed drug pusher (aka doctor) who thinks PEMF therapy is quackery will have to contend with the likes of Dr. Gordon.

This video...

Simple PEMF AC from Ipod, TV coil @ 30 watts

...is very similar to one I came across earlier:

Ultrasonic Magnetic Pulser Using Android Tablet As Frequency Generator

I liked yours because it showed the audio amp and how everything hooked up.  I was surprised at how simple it is to setup.

When I first saw it, it made me think that this could be a good alternative to the large unit that I pictured in my original post.  I think you're spot on with taking this approach.

I didn't know what value there was to having a speaker attached to the audio amplifier until I setup my mag pulser rig (more on it later).  It enables one to monitor the volume, to make sure the unit has not flipped out because the volume was too high, and to find the upper limit for the volume setting of the audio amp before it starts 'sputtering.'

You can see that he's getting lots of pulses by the way the metal washer bounces around.

Yep, good specs here, especially on making the coil:

Build a Low cost & simple Magnetic Pulser

He seems to prefer "the natural beat frequency of the Earth magnetic field (9.6 Hz) AND the Schumann waves (7.83 Hz)."

Regarding the use of capacitors (caps) and "a high current SCR" (Silicon Controlled Rectifier), electronics are out of my league.  I frankly don't have the time to learn all the ins and outs of ordering, testing, and implementing them.

This was very good, too:

http://www.pemft.net/pemf-book---the-video.html

In his video series, Bryant Meyers quoted many sources making a strong case for using the 0 - 30hz range.  He also said that "Too high an intensity can cause harm."  I wonder what "too high" is.  And how that jibes, or contrasts, with many fantastic testimonials for units such as Klemens' machines.

In fact, there are a few YouTube videos featuring practicioners using the PEMF 4000 machine ($10,999) or similar units on horses and pets.  Horse owners don't pay big money for treatments that don't work.  Consider these:

A horse trainer with a healing touch

Horse Sense Australia
December 12, 2014
"We have tried the Super Magnetic Pulser on our rescues, including horses and ponies with pain and inflammation from founder and injuries. The machine works well and some horses will even fall asleep during its use. Thanks Anton Klemens for putting us onto this wonderful device from Klemens Health Care Products."

Bryant Meyers quoted a NASA study that said that "1 - 20 uT" gave "maximum results."  It sounds like a key bit of information but I have absolutely no idea what it is.  How does that mesh with the DIY and commercial units?  And how does the average DIYourselfer measure that?

He mentions that all one needs (using the right machine) is 8 minutes twice a day.  The mat he keeps referring to is the one that was briefly displayed on the Dr. Oz PEMF episode which appears to be the iMRS 2000 (http://www.imrs2000.com/imrs-pemf-mat/).  The policeman who was the guest on the show got incredible results within 2 weeks.  I like the 8 minute duration and it seems to jibe with what users of high intensity machines have used to get great results.  (They usually state somewhere around a 5 minute application per bodypart.)

Another interesting thing about the PEMF mat is that I'm sure it cannot pulse a metal washer high into the air.  Yet it's effective.  So in this case, less is better. 

The iMRS 2000 unit is so expensive that you have to contact the company to get a price.  (The big lie video later showed the price as $4,790.)

Here are the specs for the iMRS 2000:

iMRS 2000:  The Pulsed Electromagnetic Field (PEMF) Leader
Technical Specs
Frequency - .5 - 25 Hz
Intensity - .09 uT - 70 uT (Earth Intensity = 33-66 uT)
Graduated Intensity - Yes - 3x Stronger at Feet --Weaker at Head
Biorhythm - 15 Hz - 7.5 Hz - 3 Hz - .5 Hz
Waveform - Sawtooth on Full Body Mat - Squarewave on Pad and Probe
Switches Polarity - Yes, Every Two Minutes
Sound and Light frequencies - Same as Mat, Synchronized for Maximum Benefit
Dimensions Full Body Mat - 25 Inches x 69.5 Inches
Price - Call Us for Pricing or Download Free Brochure
Warranty - 3 Years Unconditional
Shipping - Free to U.S. and Canada
(Hawaii and International Extra - call for pricing)
http://www.imrs2000.com/?gclid=CKat28bTwsQCFUIR7AodoTgAkA

What intrigues me about the iMRS 2000 is that it doesn't have the pulse power (gauss) and thus the depth of magnetic penetration that the Sota mag pulsers do.  And it only takes 6 coils to cover the entire body.  Which also, according to their graphic, is able to emit its magic easily above a person's body.

My Sota MP5 unit is very powerful and provides deep penetration (9 inches).  Yet it has not given me results that I read about with folks who've used the iMRS 2000, the Klemens machines, and others like them.  For example, I've mag pulsed my bad shoulder some nights for 30-60 minutes with the Sota MP5 and it hasn't really helped.  What's the difference?  Pulses per second?

Perhaps jaguar57 nailed it: "I think the PEMF machines mostly have low strength magnetic fields but much more pulses per minute than a Beck Pulser..."  I find this to be encouraging as my DIY rig doesn't seem to be oozing a strong gauss (more on this later).

Regarding this video:

PEMF REVIEW The big lie when it comes to the power!

...he seems to make the case for more power, not less.  His testing confirmed the efficaciousness of the Curatron 3D System and the PMT 100 units which are very powerful.  I wish he had made his point a little clearer.

My friend who's bigtime into electromedicine turned me onto Amazing1.com which has a collection of mag pulsers:

Mag Pulser collection

Speaking of low intensity, check these out:

Torino_Dog_Knee2a.mov

Assisi tPEMF Loop
"Check out the internet cat Lil Bub. She's the living proof that this product does work. She couldn't walk anymore in 2012, she regained that ability, as well as running, jumping and climbing up the stairs. The videos about it just don't lie."

My DIY Audio Amplifier Based Magnetic Pulser
After spending most evenings researching and ordering the parts for an audio amp based mag pulser, I finally put my rig together last night.  Here are some pics:

Jantzen 1892 5.0mH 18 AWG Air Core Inductor 255-284

I got this crossover coil from eBay and chose it because it's 5.0mH (millihenry inductance).  (The higher the number of mH, the stronger the magnetic field and higher cost.)  The Klemens Super T Magnetic Pulser has an "11 milli henry coil rating."  Lower mH rating wire was a lot cheaper but I wanted to get something within specs.  

"V" (aka blackchisel97) of NVtronics.org did some testing with crossover coils which were "3mH wound with #18 magnet wire."  And elsewhere noted:

"The coil can be from 2.5 mH to 10 mH (the higher the greater Inductance Magnetic Field )"
http://www.nvtronics.org/viewtopic.php?f=2&t=24&hilit=12VDC

Btw, the NVtronics forum is very active and is a great resource (though I've not had time to get involved yet).

My Lepai LVPIN LP-2020A+ with crossover coil and speaker connected to my laptop.

The Lepai LVPIN LP-2020A+ has many glowing reviews on the Internet so I thought I'd give it a try.  It sold for $22.95 shipped on eBay.  (There seems to be a glut of them on eBay which probably accounts for the low price.)

Lepai LVPIN LP-2020A+ with crossover coil

I used a 3.5mm male to 3.5mm male stereo audio cable to connect the amplifier to my laptop.

I used a couple of cable ties to help keep the wiring intact.  I've read that the constant barrage of pulsing can cause them to loosen and thus reduce the coil's ability to create a strong magnetic field.  I plan to wrap the coil in electrical (or some other) tape as a nick in the enamel coating could cause a shock.  I'll probably get rid of the wire nuts and do some tinning and soldering.  And I've got to figure out how to attach a handle to it.

I've not been able to ascertain which side is negative.  I don't have a compass or a gauss meter but I do have a very powerful neodymium magnet.  The coil doesn't attract or repel the magnet like my Sota MP5 does.  It just pulses it back and forth.  (More so on one side than the other but the difference is neglible.)  I guess this is because (speculation) the rapid square waves push and pull the magnet in a give and take movement.  If so, then maybe there is no North/negative side to the coil.  Until I find out, I'm going to test one side for 5 minutes on various body parts to see the outcome.

My Sota MP5 powerfully attracts it from one side of the paddle and repels it from the other side.  But then the Sota unit only pulses every 7 seconds or so.

Multisine V1.74 set to 10hz

This is a free and relatively simple frequency generator.  Under the square wave setting, it has options for Frequency (hz), Phase (DEG), L/R Phase Offset (DEG), and Level (dB).  Right now I've been experimenting with 10hz and leaving the other options blank because I really don't know what they mean or how they might impact performance. 

Frequency is the area that perplexes me.  Which hz square wave to use.  And if a range or combination of hz square waves is needful.

Based on Bryant Meyers quoted sources, perhaps the sweetspot is somewhere in the 0 - 30hz range.  While the iMRS 2000 uses .5 - 25hz. I'd love to hear from one of the Curezone pros as to what the best 'general' square wave setting is.

I tried running frequency generators from my Android (there are a lot of free ones in the Google Play Store) using a square wave but none provided as strong a magnetic field as my laptop does using Multisine.  (My laptop must have more audio horsepower.)  And when I place a small screw in the middle of the coil, it bounces around like crazy.  Cool! 

Using my laptop and Multisine, I can only crank the Lepai amp up to about 60% before it starts sputtering.  Perhaps it's because there's not enough resistance in the crossover coil.  If so, then maybe all I need to do is get a crossover coil with a higher mH rating akin to the 11mH coil in the Klemens unit.

My Jantzen 1892 5.0mH 18 AWG Air Core Inductor 255-284 cost $28.18 shipped.

The Jantzen 1971 12mH 18 AWG Air Core Inductor 255-296 costs $47.40 shipped.

After running my DIY unit for about 15 minutes, the coil eventually gets warm.  Nowhere near hot.

Reinventing the Wheel?

One might think that we're trying to reinvent the wheel since we're not going the route of those at NVtronics.org.  (Those guys really know their stuff.  But they're dealing with PC boards, transformers, diodes, resistors, capacitors, LEDs, soldering, and a myriad of electronic wizardry.)  That's taking this to the next level which (I think) is a bit more than the casual DIYourselfer wants to get involved in.

Blazing a Trail

I think we're actually blazing a trail because we're trying to make an effective DIY audio amplifier based mag pulser.  Which is why there are so many questions.  Hopefully we'll find the right mix and make it easier for others to easily make their own mag pulsers so they and their loved ones can reap the benefits.

I'm going to continue tweaking this unit while moving on to the larger 12 volt car battery unit (I've got all the parts now).  And I'll fill you in on the answers I got from the gent who used to build them for himself.

So that's it for now.  Please let me know if anything is unclear.  Any feedback or suggestions is appreciated!

In health,

Paul

P.S. I've made a number of edits to this post since I originally wrote it.  So if you read through it before, you might want to refresh the page to see if I've added anything new.  Thanks!

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