Reed switches, Hall sensors, trigger coils... discuss

[synchro1]

@Tinselkoala,


You asked me to show you something. Review this 300,000 rpm magnet spinner of alphacentauro1111:


He's spinning a small tube magnet inside the core of a Tesla series bifilar coil. This rpm is way over any reed switch speed. The reed switch can act as a first stage booster untill the "Scalar Wave" takes over and powers the spinning magnet with it's internal trailing pole vortex amplitude. I use a spiral Tesla series bifilar, and got the same results with a bearing and thread spool Tesla series bifilar solenoid as well, as I described.


What alphacentauro1111 dosen't tell us , is that his power coil is not hooked up to any pulsed input source!


www.youtube.com/results?search_query=300000+rpm+magnet+spinne

[TinselKoala]

Yeah, right. He also isn't confirming the RPM with any other method. I've "reviewed" this video before.

And I note that you have posted one of my "alt.snakeoil" videos with your own interpretation. You certainly aren't afraid of looking silly, I'll give you that much!

[TinselKoala]

I did not understand this rotor-less idea at the time TinselKoala showed it in this forum and on YouTube.

But now finally I get the idea and wonder if this can be done with a hall sensor and an Arduino similar to what Mr. Naudin is doing here http://jnaudin.free.fr/dlenz/DLE23en.htm?

Naudin is using an Arduino and a hall sensor to drive a simple pulse motor (http://jnaudin.free.fr/dlenz/DLE23en.htm), but may be one could also forget the rotor and place the hall sensor somewhere near the (drive) coil. Once a signal from the hall sensor is available one can program the timing for switching the coil (positive or negative feedback).

The opto coupler and the BUZ11 in Naudin's circuit could be replaced by a MOSFET. Although the opto coupler might be a prudent way of separating the high power coil switching from the Arduino.

If the aim is to get good spikes from coil switching, a rotor is indeed not necessary. Going further, the feed back (hall sensor or trigger coil) might not be necessary if using a microprocessor to switch the coil. The timing can be entirely done by the microprocessor.

Greetings, Conrad

BUZ11 is a mosfet. The IRF3205 is cheaper and has similar if not better spec. Using an optocoupler to protect the Arduino is a good idea but even better, if driving a mosfet, is to use a gate current driver (since the Arduino only supplies 5 v at the digital outputs) like the MarkE gate boost circuit. However I've driven the mosfet directly with good results too, for example in my Arduino-controlled magnetic levitation apparatus.

Pretty soon you will be "devolving" all the way back to the simple switched mosfet/inductive load system that is the heart of the "Ainslie affair"! All you need for massive inductive spikes and ringing is a heavy inductance and a fast turn-off of the current through that inductance.

[synchro1]

Here's a video from Tinselkoala,

This is a piece of crap:

http://www.youtube.com/watch?v=t-Xrwt-50AA

Quote from youtube comment:

"I was inspired to build a little magnet spinner by synchro1's interesting work with a large powerful sphere magnet.

I don't have such a magnet, but I did have some little discs. So I mounted a disc magnet on an axle and support, very crude, and wound a couple of coils to exite it with. Assembled with hot glue and driven by the Interstate F43 function generator with a sine or a square wave, the little contraption spins at nearly 12000 RPM.

I've not started looking at output from the system yet. The coils are wired in series. I'll also be trying parallel wiring to see if there's a difference. I would like to use a self-triggering system so that the coil drive power can be triggered by the magnet's rotation directly, but the circuit I tried, posted by conradelectro, didn't work, so I'm still fiddling. Maybe I didn't have the right transistors".

What you fail to understand, is that alphacentauro1111 is not powering the tiny magnet tube spinner with pulse input!

[TinselKoala]

What you fail to understand is that he is not confirming his RPM with any other method.

If you think my work is "a piece of crap"..... then I strongly encourage you to STOP POSTING IT and post some work of your own.