Hello, hello,
I want to learn to measure the inductance of a circle of heavy copper wire, like used by Intel Seattle driven with a class-E amplifier (I think) for power-transfer across a resonant ring to a sympathetic ring just like it.
Before you go all goofy (cause it is new and if you've retired and not stayed current --surprise! wireless power-transfer is a reality --in the limited range of the near field of a magnetic resonance which has no electric field component when tuned.) It is no longer the stuff of cranks and crackpots, and many corporations are situating to produce a new market where it can be applied. One application is to park an electric car over a "power pad" which wirelessly charges at a rate of several amps to a receiver coil underneath the car. It isn't just inductive coupling --it is resonant inductive coupling.
Step one: measure the resonant copper loop inductance (ball park = 10 megaHertz), which makes one turn around the loop. Air core.
Step two: bend the wire into a figure-8. Air core. Measure inductance.
Step three: lace the wire in itself to form a toroidal winding -but without any ferrous core, just air core. Measure inductance.
I don't want to buy an inductance meter, but want to use a scope and smart tricks to work it out --arghhh... I want to do the math.
I did have four calculus courses that have petrified in the three decades not used. I might could brush up with a point in the right direction
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I'm retired from programming and simple logic circuits, have a basic knowledge of ohms law, and know what most components do. Most words and terms I know about.
This will be the beginning of a more scientific effort by a friend and I in the Natural Philosophy Alliance. Nat. Phil. is the old term for physics. I'm starting my edjicashun with these questions of how to start.
So, this is an adventure, like my science projects were in high school, when I started basically clueless and learned my way there.
Why?
Research has found (but is not accepted by the mainstream) that there is a notch frequency of a conductor that is dependent upon the scale of the conductor where the conductor's near-field coheres into the EM resonant envelope. (Eugene Podkletnov, Ph.D did it with superconductors --and says that superconductors are not required.)
I've googled and read much on electronics. I've had one year of EE fundamentals way back before the wars (Vietnam, etc.)... and am an above average idiot.
Thanks anyone/all.
AZ
I want to learn to measure the inductance of a circle of heavy copper wire, like used by Intel Seattle driven with a class-E amplifier (I think) for power-transfer across a resonant ring to a sympathetic ring just like it.
Before you go all goofy (cause it is new and if you've retired and not stayed current --surprise! wireless power-transfer is a reality --in the limited range of the near field of a magnetic resonance which has no electric field component when tuned.) It is no longer the stuff of cranks and crackpots, and many corporations are situating to produce a new market where it can be applied. One application is to park an electric car over a "power pad" which wirelessly charges at a rate of several amps to a receiver coil underneath the car. It isn't just inductive coupling --it is resonant inductive coupling.
Step one: measure the resonant copper loop inductance (ball park = 10 megaHertz), which makes one turn around the loop. Air core.
Step two: bend the wire into a figure-8. Air core. Measure inductance.
Step three: lace the wire in itself to form a toroidal winding -but without any ferrous core, just air core. Measure inductance.
I don't want to buy an inductance meter, but want to use a scope and smart tricks to work it out --arghhh... I want to do the math.
I did have four calculus courses that have petrified in the three decades not used. I might could brush up with a point in the right direction
---
I'm retired from programming and simple logic circuits, have a basic knowledge of ohms law, and know what most components do. Most words and terms I know about.
This will be the beginning of a more scientific effort by a friend and I in the Natural Philosophy Alliance. Nat. Phil. is the old term for physics. I'm starting my edjicashun with these questions of how to start.
So, this is an adventure, like my science projects were in high school, when I started basically clueless and learned my way there.
Why?
Research has found (but is not accepted by the mainstream) that there is a notch frequency of a conductor that is dependent upon the scale of the conductor where the conductor's near-field coheres into the EM resonant envelope. (Eugene Podkletnov, Ph.D did it with superconductors --and says that superconductors are not required.)
I've googled and read much on electronics. I've had one year of EE fundamentals way back before the wars (Vietnam, etc.)... and am an above average idiot.
Thanks anyone/all.
AZ