Self accelerating reed switch magnet spinner.

[MileHigh]

Bill:

I wanted to comment on this but it got lost in the shuffle.

Didn't click the link yet but this sounds a lot like the Babbage engine?

Yes indeed, you are correct.  If I recall correctly Charles Babbage spent many years trying to perfect the "Analytical Engine" machine but the machining and parts and materials were just not available at the time.  So he had the correct system but he could not fully realize it in a working model.

So the ship's firing computer is a giant working Babbage machine.   Here is a simple typical example pulled from the film:  Imagine a 10-foot-long cylinder about three feet in diameter.  You can see that the "cylinder" actually has a sculpted odd-looking shape.  The cylinder rotates about it's axis and there is a cam on a plunger that rolls over the cylinder so that it can register the radius of the cylinder at any point on the cylinder (you will see it in the movie if you watch it.)

Now, supposing that the angle that you turn the cylinder on the shaft varies between 0 and 10.   Let's call that the variable A.  Supposing that the linear distance along the cylinder varies between 0 and 10.  Let's call that the variable B.

You make the shape of the cylinder so that any point on the cylinder has a radius of [Sqrt(A x B)]

So if you can imagine the cylinder rotating on it's axis, and a cam that moves along the length of the shaft that measures the radius of the shaft - then if you sculpt the cylinder properly you get the square root of the product of the two variables in real time.   I probably and not describing it that well but it's worth it to watch the movie if you are interested.

MileHigh

[TinselKoala]

Imagine this:

[TinselKoala]

The present state of the schematic:

[MileHigh]

TK:

Congratulations on an excellent job!  Having an updated schematic is very much appreciated also.

Magluvin:

I told you not to engage with me and I mean it.  And your answer is close but not quite right.  When the rotor magnet is moving across the center of the large sense coil there is no change in total magnetic flux through the loop with respect to time so the EMF generated by the coil will be zero.  In this case it's EMF and not current that is the relevant parameter, there is no current flow through the coil.

I sent you an email that you read this morning telling you to remove your quoting of me in reply #88 and you didn't do it.

DO NOT ENGAGE WITH ME ON THE FORUM.

I made an exception in this case and responded to you, but it likely will never happen again.

MileHigh

[TinselKoala]

Coil data:

Sense coil: Carefully removed from a television set SPST relay, 24VDC coil, coreless. DC resistance 273 ohms. Inductance 33 mH (by ProsKit meter, may not be accurate due to high resistance of coil.)

Drive coil: Bobbin made with center phenolic tube, 1/4" ID, 3/8" OD. Winding 1 5/8" long x 2" diameter, wound full with #27 enameled magnet wire. Center tube can accept 1/4 inch bolt or rod core, but has a plastic threaded rod mounting it in the photo above. DC resistance 62 ohms, inductance 145 mH.