The Robert Adams Pulse Motor Design Review

[plengo]

This thread is simply EXCELLENT. I am getting into it too.

Today I cut an MFD board to 200mm circle and used a motor from and old VCR as a bearings (excellent btw).

I ordered some coils from Rod so that I don't have to fuzz with wrong resistance neither inductance. I am trying to replicate Rod's replication.

In the past I did play with Adams motor with great "success". I got it to run in incredible little current and voltage and really cold, sometimes 5 degrees Celsius below room temperature using a digital laser meter. Unfortunately at the time I did not know how to use or program a PIC micro-controller neither new much about electronics and neither about what that really meant.

Today things are different. I know a lot more about electronics and what it really means and know to program a PIC micro-controller AND I have all I need to make it happen. Back in business again!

One thing I have noticed is that Rod is ONLY using one of the sides of the sine wave induced by the magnet passing by, Imagine when we start using BOTH sides??!!!!

Rod, THANK you man, let's make this OU happen for all for good.

Fausto.

[eternalightwithin]

Yes it does. >>>> COP1 Go and build it. You will get much satisfaction

[coss]

hello
this system have COP>1?

[i_ron]

good question?

The pulse goes low to turn on the device because it is referenced to ground
across the transistor.

if you need a photo I will make one later

Cheers Rod

Nope, thats fine. I was trying to remember what you had said about the cap switch out not being on when the coil drive was on... but had not allowed for inverted logic, lol

On <http://www.overunity.com/index.php?topic=10398.new#new> message #400 I have posted a coil shorting jpg of 8 shorts at peak sine wave.

I mention this as the computer might be a hold up for many (me too) and my circuits could be adapted to run the Adam without computer control... just using pots adjust the pulse width and number of pwm pulses. Also just using two matched (same number) N channel fets for top and bottom switching.Any interest let me know... I'm in the middle of a bunch of things at the moment so it won't be instant. Didn't post here as could be OT.

Rod, now if you had been using the arduino uno... LOL, love to get started on that one....

Ron

[toranarod]

Hi Rod,

Excellent work!

However I am confused with the scope shot, no offence... but is it inverted?

Which way are the pulses going? Is TP1 On or off?

Ron

good question?

The pulse goes low to turn on the device because it is referenced to ground
across the transistor.

if you need a photo I will make one later

Cheers Rod

[toranarod]

Hi Rod,

Thanks you for showing the schematics and the scope shots. Would like to ask the scope settings both on horizontally (TIME/DIV) and on vertically (Volt/DIV)?
It would be more informative.
You indicate PVN012AP photovoltaic relay now for battery separation during the drive cycle and earlier you wrote using a PR32MA11NTZF Solid State relay. The first one seems a bit slower device than the second one, is it still good for the job?

Have you already have some measurement results (input vs output) with this setup you show?

Thank you
Gyula

[i_ron]

Pulsing

Hi Rod,

Excellent work!

However I am confused with the scope shot, no offence... but is it inverted?

Which way are the pulses going? Is TP1 On or off?

Ron

[gyula]

Hi Rod,

Thanks you for showing the schematics and the scope shots. Would like to ask the scope settings both on horizontally (TIME/DIV) and on vertically (Volt/DIV)?
It would be more informative.
You indicate PVN012AP photovoltaic relay now for battery separation during the drive cycle and earlier you wrote using a PR32MA11NTZF Solid State relay. The first one seems a bit slower device than the second one, is it still good for the job?

Have you already have some measurement results (input vs output) with this setup you show?

Thank you
Gyula

[toranarod]

[toranarod]

toranarod

I am considering purchasing an easypic6 development board and setting up a motor configuration similar to yours. Were I to forge ahead with this, would it be reasonable to expect that I could load your hex file into a chip of like specification? Not sure I am up to assembler programming but I have done a bit of C from long ago.

Your comments and advice on this would be appreciated :-)

Kind regards, nodrog.

If you need the Hex file more than happy to email it to you
cheers

[toranarod]

Thank you so much for your Reply
I have been so busy working on my motor I haven't been on the forum for a while

I have some very impressive results I am eager to share.

I will give you any information you need I have anew PDF I have created about all of the PIC system

[nodrog]

toranarod

I am considering purchasing an easypic6 development board and setting up a motor configuration similar to yours. Were I to forge ahead with this, would it be reasonable to expect that I could load your hex file into a chip of like specification? Not sure I am up to assembler programming but I have done a bit of C from long ago.

Your comments and advice on this would be appreciated :-)

Kind regards, nodrog.

[nodrog]

...have 280 ohm of impedance.

From what you have said, 280 ohms would only be at one specific frequency. Higher if higher frequency, and lower accordingly. So, if I understand you correctly, how do you determine that 280 is the correct resistance/impedance? Is there an optimum frequency?

Please excuse my not getting it.

:-)

Kind regards, nodrog.

[EMCSQ]

Hi Guys that all sounds very good. Both Robert and Howard Johnson independently came to the conclusion the the magnet could also be made to pulse at theoretically 1000 times its base strength. Both believed they had achieved somewhere between 200 and 250 times the magnets base strength. Thus there is a lot of potential when you hit the all right combinations in these motors. For his 10KW machine Robert was using 0.35mm Wire in his coils and each of the 2 coils was exactly 36 ohms. In series he has 72 ohms. He was not interested in counting turns but was working on a different theory of operation in these designs. Regards Russ

Can you go deeper in your theory.
When counting turns is not of interest, maybe the length of the wire is.
In the kapanadze coil , the one that is fed by the spark gap forms a standing wave , whose frequency depends on the length of the wire.
(russian forum)

[toranarod]

Hi Toranarod

It totally makes sense then that with your ability with electronics that you would use a low resistance then "dial it up" so to speak as the need arises or performance dictates.

So how did you come up 280 ohms?

:-)

Kind regards, nodrog.

Hello nodog
I have been working on the Adams motor so much I have been totally distracted from coming on the forum and writing.

The coils measure .5 ohm as a resistor with a DMM DC static resistance

A coil is not a Resistor. Capacitor is not a resistor. However we use both of them to draw current like a resistor in an AC circuit. Coils can be used to control current flow in frequency changing AC voltage circuits. You may know them as surge arrestors.
What I am really saying is the coils have 280 ohm of impedance. The Adams Motor is a dynamic circuit and even more when you get into his cold current reversal. The faster you switch a coil on and off the higher the resistance will go. The opposite is true of a capacitor. The coils resistance in my Adams motor circuit given the RPM and The Switching frequency of the PWM controller calculate to 280 Ohms. This is why my argument for precision control of the timing is so important