Hi Conradelektro and TinselKoala,
To conradelektro,
You asked At what Voltage does the ZTX1048A transistor self start in your circuit?The answer i only get oscillation to start(temp shorting emitter & collector)
60mV which i was comparing against the old Japanese transistor 2SD1450.I could manually get oscillation to start at 50mV.
But my objective was to see how low voltage a good transistor could continue to oscillate base on low vce(found in datasheet for lower current draw <200mA)
The improvement i noted is oscillation lasted as low as
30mV for ZTX1048A compared to Japanese transistor
2SD1450(Oscillation stop around 43mV) which had slightly higher VCE drop.
If you checked out my youtube channel search "
Sanjev21" title would be "
Ultra Low voltage 45mV Joule Thief -Potential to be powered by peltier using body heat only" .This was 1st original non self starting version joule thief using the Japanese transistor.I have not posted ZTX version video since by then i had received the 2SK170 to work with.
Please try not to think about "
neutrino detector" just typing this word in google yield huge collection of image all of which are built deep underground.I mean to say it's huge.
Seen a documentary about capturing 1 or 2 neutrinos which orignates from the sun years ago just to study it.Can't recall fully.
To TinselKoala,
Thanks for providing interesting links which makes our eyes open even wider.
But i'm more interested in this particular link you sent.
http://www.arrl.org/files/file/Technology/tis/info/pdf/culter.pdfThe author mentioned-
It only takes
5 to 10 mV peak-to-peak on the
source of the MOSFET to provide an adequate
volume level.
There is a another line in pdf where he mentioned combining
4 mosfet to improve performance-
The detector consists of four MOSFETs
in parallel using the quad version of the
detector IC in order to better match the lower
resonator impedance
AL D110800A (Dual Mosfet version)
ALD110800APCL(Quad mosfet version)
I will reading up the datasheet to check to current draw capability.Who knows it might be even better than 2SK170 ultra low 25mV.
Lastly,
There is another plan that popped in my mind.How about we use "
motor as micro power generator through vibration" as we walk.This idea would be better than peltier since
voltage output could be around 500mV to 1v around 10x times better in terms of voltage output for joule thief.
This is sketchy plan in words as from my mind.Use a small palm size rectangular plastic box as the housing unit for "motor used as micro power generator".
The motor will be the weight on the center and motor is connected to 2 springs(One on the upper portion of the box) and another spring from motor to lower half of box.
The "motor needs to be dual long shaft type" with gears on both end of motor shaft.In the box a line of teeth(From top to bottom) to be lined both side of box(Have not figured out how to balance motor parallely).
If we place the rectangular box vertically in our bag then as we walk the motor would vibrate up and down therefore generating good amount of electricity "on the move".
In theory the power output would be at least 10x time better than peltier design.To power joule thief.
Just a concept.