Solid State Orbo System

[Bruce_TPU]

Hi Gyula,

They were from the mentioned coils, one of the output coils and one of the center coils.  I was just curiouse of their capacitance was all and was playing with my new L meter... 

As far as the center coil, I will begin to work on trying to source some non electrolytic and see what I can find.  In my mind that is the first thing I want to try.

As far as the output coils, I will add the 8.615 uF capacitor and make it a resonant series with a 50 ohm load/resistor to start with, for testing purposes.

I will work on these two things, Gyula, and then get back with you and work on resonance for the input toroids and outer bias that are all wired in series.

Again, many thanks,

Bruce

[gyulasun]

...
I have also recently noticed that I could remove the magnets from the toroidal coil if I wired a secondary with about 10 turns and I shorted it!

Hi NerzhDishual,

What do the magnets do in a (toroidal) iron core? I think they magnetically bias the core towards the saturation area  i.e. the B-H curve becomes assymetrical and distorted.

What does a short circuited coil do in a (toroidal) core? It magnetically biases the core too because the changing flux induces current in this coil and this current has a high value because it is limited only by the coil wire resistance. So the B-H curve becomes also assymetrical and distorted too.

It would be interesting to see whether the induced output power in the pick up coil is affected or not (probably not) by the short circuited coil, however, the resultant efficiency is surely much less than in case of using the magnets, because the extra loss the short circuit introduces reflects back in the input power as a further demand.

It is strange you received so little output from the pickup coil.

rgds,  Gyula

[NerzhDishual]

.......
maybe because you use 220 and 100 ohm R3 resistor... try smaller like 5-10 ohm

.......
It would be interesting to see whether the induced output power in the pick up coil
is affected or not (probably not) by the short circuited coil, however, the resultant
efficiency is surely much less than in case of using the magnets, because
the extra loss the short circuit introduces reflects back in the input power
as a further demand.

It is strange you received so little output from the pickup coil.

rgds,  Gyula

Thanks for all these feeback and advices.
I will do the experiments.
As far as I can remember, when I remove the magnets that are inside of the toroidal coil
and also when I 'un-short' the secondary wires I got nothing at the pickup coil.

Yes, I got very little output at the pickup coil. 
However, I have the same circuit and the same toroidal coil than JL Naudin.
I am wondering, due to such a lack of fortune in some of my replications, whether
I would be better for me to try mussels hunting or other mundane activities. 

Very Best

[supersam]

do what you want!


if you can?

lol
sam

[Bruce_TPU]

Early Morning Everyone,

To make a long story short, I saw a picture in my studies of a device that gave me an idea to try on my SSG3...

What I did was to cut ten pieces of soft iron wire, tape their ends, and then to wind a single layer of 20awg magnet wire around it.  I then placed it up against the edge of my brooks coils.  This is only the first of about 8 that I will be winding. I then wired it in series with my toroids and outer bias. 

Contrary to what I had read, I had expected my input current to go up...But no, just like I had read it went down.  from 7 ma to 4 ma.  (Nearly a 50% reduction in input power, for those that think it insignificant!) All of the subsequent ones will also be wired in series.  As more of these come on line, the ideas is that everytime the pulse hits it, it becomes a weak electromagnet and puts a little power into the brooks, while at the same time, it is drastically reducing my input power.

If this trend continues, then things should get real interesting with two or three more of these.

I am awaiting my 555 timer kit to arrive.  I hope it get's here before the Easter Break.  I am also going to be working on matching resonance, thanks to the great help from Gyula.

Cheers,

Bruce