The SG Radiant Oscillator

[John_Koorn]

The bottom of the trigger winding going to the primary positive forces the trigger thereby turning the, normally mechanical/rotored, SSG into a precisely controlled solid state oscillator.

Patrick A.

Patrick, does that mean that you are running this circuit in SS mode without the B-C resistor and the diode instead of the B-E resistor? Interesting.

What sort of results are you getting?

John K.

[LesK]

Patrick,
I think your right! That makes the most sense. Simple!

Les

I assumed and just went back to double check the recent videos - John B. has both of the green wires in parallel for the trigger. They are definitely connected together at the primary + and the other ends terminate to the middle of the split 680 ohm resistors - that is the two 680 ohm resistors and the 2 green trigger wires are all connected together, then each of the 680 ohm resistors go to the bases of their respective transistors, just as I drew out in the diagram above minus the CPD mod . I found that with the SS, my coils with the thicker trigger wire do a better job triggering the transistor. They pack a bigger punch to the base. It's all a balance though right...

Patrick A.

[min2oly]

In post #40 Was where I got the idea that you could use one trigger strand if wanted when using the transformer function. When I hear transformer function I always think of pages 46 and 47 of FEG. 46 being the solid state version.
So my prospective was that If you were using the transformer function, you could use one trigger. But if not you would use one trigger per transistor.
But it could also mean that he had the extra wire there so he could play with the transformer function if wanted and was just an extra wire hanging there when not in use, and there is no such thing as more than one trigger wire.
I just seems to me the lameller currents would not have the same effect without a trigger strand per transistor...
Or I could just plain have the whole thing wrong from the ground up(most likely).......

Les

I assumed and just went back to double check the recent videos - John B. has both of the green wires in parallel for the trigger. They are definitely connected together at the primary + and the other ends terminate to the middle of the split 680 ohm resistors - that is the two 680 ohm resistors and the 2 green trigger wires are all connected together, then each of the 680 ohm resistors go to the bases of their respective transistors, just as I drew out in the diagram above minus the CPD mod . I found that with the SS, my coils with the thicker trigger wire do a better job triggering the transistor. They pack a bigger punch to the base. It's all a balance though right...

Patrick A.

[min2oly]

This is how I've been doing it:

[ATTACH=CONFIG]599[/ATTACH]

Patrick A.

The bottom of the trigger winding going to the primary positive forces the trigger thereby turning the, normally mechanical/rotored, SSG into a precisely controlled solid state oscillator.

Patrick A.

[LesK]

Howard, it's a Christmas decoration I can guess that John B wound two of them to see if both in series or parallel or just one by itself worked better Or maybe he already had the coil lying around.

@John B, care to solve the mystery of the extra green wire?

John K.

In post #40 Was where I got the idea that you could use one trigger strand if wanted when using the transformer function. When I hear transformer function I always think of pages 46 and 47 of FEG. 46 being the solid state version.
So my prospective was that If you were using the transformer function, you could use one trigger. But if not you would use one trigger per transistor.
But it could also mean that he had the extra wire there so he could play with the transformer function if wanted and was just an extra wire hanging there when not in use, and there is no such thing as more than one trigger wire.
I just seems to me the lameller currents would not have the same effect without a trigger strand per transistor...
Or I could just plain have the whole thing wrong from the ground up(most likely).......

Les

[RS_]

Thanks John K.

I missed named it.....
This circuit is based on the figure 33 self oscillator, and the Radiant Tube oscillator, and is what I think that JB is showing in the video.......

here is a updated version that shows what I changed to tweak it, and re named it........

[John_Koorn]

John K,
So if we have one trigger attaching to both resistors what is the other green wire for? I can't see clearly that it isn't both wires attached to both resistors, maybe just bad resolution or old eyes.
h

Howard, it's a Christmas decoration I can guess that John B wound two of them to see if both in series or parallel or just one by itself worked better Or maybe he already had the coil lying around.

@John B, care to solve the mystery of the extra green wire?

John K.

[Howard Wetsman]

John K,
So if we have one trigger attaching to both resistors what is the other green wire for? I can't see clearly that it isn't both wires attached to both resistors, maybe just bad resolution or old eyes.
h

[John_Koorn]

This is how I've been doing it:

[ATTACH=CONFIG]599[/ATTACH]

Patrick A.

Patrick, is this in solid state mode or the rotored version?

John K.

[John_Koorn]

Hi all

I had to build a SS SSG charging 2 Battery's at the same time....

I have a small torrid that had a extra strand that I was using to power LED's array's with, so i used it, as it can be another power strand. this coil setup in a SS SSG mode and 1 tranny, charging 4 AA's in series, pulls 10 to 14 ma depending on the voltage it's running at, 5.3V to 4.3V..... adding the 2nd transistor and power strand did NOT make the current go up any, and now I have 2 sets of 4 AA Battery's charging at the same time, for the same current draw..... and it's pushing them both up pretty fast......

so once again I hope JB does not mind me posting a Sch....

RS, the forced trigger has the bottom of the trigger winding going to the primary positive, instead of the primary negative.

John K.

[min2oly]

This is how I've been doing it:



Patrick A.

[RS_]

Hi all

I had to build a SS SSG charging 2 Battery's at the same time....

I have a small torrid that had a extra strand that I was using to power LED's array's with, so i used it, as it can be another power strand. this coil setup in a SS SSG mode and 1 tranny, charging 4 AA's in series, pulls 10 to 14 ma depending on the voltage it's running at, 5.3V to 4.3V..... adding the 2nd transistor and power strand did NOT make the current go up any, and now I have 2 sets of 4 AA Battery's charging at the same time, for the same current draw..... and it's pushing them both up pretty fast......

so once again I hope JB does not mind me posting a Sch....

[John_Koorn]

Les and John K,
I assume Les's question about trigger wire comes from John's video. It appears there are two litzed trigger wires as well as two litzed power wires. It is not clear to me if the trigger wires are split or they are attached to together to one end of both base resistors. I'm not even sure I can see two base resistors, but I'm assuming they are there. So if there's only one trigger, I'd wonder why it's made of two wires, and I've been assuming it has something to do with impedance which is not something I've been able to understand yet.
h

Les & Howard, look at the video John B posted in post #52 again. At about 1:22 into the video John says "1 trigger". Right at the end of the video you can see one of the green trigger wires connected to both of the base resistors.

There are two green wires, I'm guessing one of them is acting as a radiant antenna Haha, just kidding.

John K.

[min2oly]

Another experiment I did:
charging one high impedance battery and one low impedance battery using this diode split.

battery A was charging to 13.6
battery b was charging to 12.78
I then paralleled a high imp. 12.10V 3rd battery C to B

battery A slowly came down to 12.89 while B&C were at 12.65

This presents to me a whole new area of experiments that can be had to possibly find the best battery for the energizer and/or tuning to the battery...

Kind Regards,
Patrick

[min2oly]

This relation between different batteries is indeed interesting.

I have been cycling 2 12v batteries that I thought were fairly identical. they come very close on my impedance meter, however, using this diode split, one of the two definitely takes the charge faster than the other. I've swapped the batteries just to be sure it follows the battery and is not due to the diode/transistor.

Patrick