Dr Ronald Stiffler SEC technology

[gyulasun]

Hi gyula. thanks for reply. can you draw Pi filter circuit ? I cant understand how to build the Pi filter. thanks

Sure, here it is.  It shows the place for inserting an Ampermeter too.

[gyulasun]

Hi Nick,
Okay and yes the price for less heat comes with some decrease in output amplitude, this is why I wrote temporary solution, not to kill more transistors yet doing some more tinkerings.When you get transistors like BD243C or similar with higher power dissipation ratings, they still should be protected against excess heat by mounting them on heat sink.
Gyula

[NickZ]

     Gyula:
   Yes, well I had my oscillator all set up for using a 2SC5200 transistor (250v, or so) with heat sink, but somehow it was not working. And although it was fairly new and not used hardly, but, it was burnt out, somehow.   I'll be getting the right best transistor for this crystal rig, once I know which is the best bet.
I've been trying out and deep frying some of the transistors that I have on hand, first. As always...
I did add a 47uf (not pf), 100v capacitor onto the diode loop, at the led bulbs. And it did add a bit more gain to the light output levels.  It's nice to have a holder for the transistors, along with a holder for the crystal, for easy replacing or testing, along with a heat sink and fan for the transistors, if needed.
And it probably will be needed...
   So, I picked up my two DC to DC converters today. And made a video while testing one of them out, ( link below). 
The converter is turned all the way down, as I need to add some more resistance to the base circuit. So that I can run the booster at higher voltages, and/or from my small 5 watt, 12v, (more like 22v, open circuit) solar panel. The booster will go to 55v, or so, but, my transistor may not.
   Anyways, one thing at a time...  Todays, tests:  https://youtu.be/8A79fK7Tg5k

[erfandl]

Sure, here it is.  It shows the place for inserting an Ampermeter too.

thanks Gyula. I build the Pi filter circuit and testing the crystal current. with one crystal current is 28.41 mA and with three crystal current is 23.12 mAh also light output increased with three crystal ! the L3 coil now working without ferrite rod !
DC DC boost converter pull 3.4 mA from battery !!!

[itsu]

Hi Itsu,

Regarding your differential voltage measurement across the middle coil in Reply #590: the waveforms are quasi identical, the 1 V difference is very small with respect to the 43-44 Vpp amplitudes. I believe the small decrease in brightness you notice due to the probes connection may happen because the differential probe capacitance may detune the middle coil. 
I cannot guess why the Math trace goes negative, a crazy idea would say: flip the AV diodes polarity going to the middle coil and see then whether it changes to positive or remains negative?
Regarding your 1 Ohm csr measurements (when run from the oscillator) and also with swapping the output and input coils (when run from the FG): it comes that my thought to blame the small difference in input and output coils inductance would not explain the around 5 V change on the 1 Ohm when you remove or attach the output coil/LED combo. I still think though that the answer may still inherently be in the tuning of the coils, perhaps try to use a small piece of powdered iron RF core and approach it to each coil to reduce their own resonance and see any change in the 5 V issue. Of course, when you have time and the mood because this is not so important at this time and maybe it will not be. But it is still good the Math output value does not change when removing the 3rd coil/LED combo.   Thanks for all your efforts.
Gyula

Gyula,

i don't think i will do much more investigations on this positive/negative Math outcome as i have been fooled before with these type of open/floating systems.

The scope and FG are not designed to do measurements this way, so the results are unpredictical and unreliable.

I will be waiting for further updates from the Dr. Stiffler channel if any.

Thanks for all your input and efforts to help us.



I did use my oscillator driving again the capacitively coupled ledstrip but now with up to 3 crystals like erfandl did.

I does show that when inserting extra crystals the output stays the same but the input current goes down, but only with a very limited value, like 60mA to 58mA to 57mA.

Probably my tank circuit setup behaves differently in that respect.

Regards Itsu