Weird Results From Spice Model

Also it looks like you've stumbled into something that resembles a multivibrator or flip flop circuit design. This is why the simulator produces an oscillation.

the 2 resistors are relict from tuning process -- trying to find how small currents through those resistances may be so that the thing still oscillates -- and it gets even better the BJT design gets 1.5 MHz out of (/pulling) 475nA from 1.2V source::

// i am aware it might be caused by the "poor simulation software" but there're also "micro"-currents through NP-junctions -- other words it may work in real -- i have only hobbyist meters (CAT.II CAT.III ) and no scope = below 1µA 1.5MHz - i can't measure it ... direct

// there's nothing wrong with schematic - the question is does the Gummel-Poon model pass something here the real life BJT doesnot

link to LTspice .asc FILE

You still have an absurd mix of discrete (tangible) active circuit elements (2N3904) and implausible sized ideal capacitors. You should take a class on analog network theory instead of approaching Spice simulation like a video game hack. Real understanding of how to use Norton and Thevenin equivalents will do wonders for your intuitive circuit analysis and design approach.

mu-haa-ha-ha-ha-ha-haa

basicly i don't care my capacitor sizes the Switcer CAD can make sense of using 20fF 1-s -- and in rare occasions even less (&idont hink tey so implausible in microchip context where you can get some 3M above circuit in parallel producing 1A for practical purposes in cloudy day from otherwise useless solar array)

if i'd need something practical - i'd read the net-reviews ask some friends and buy the stuff not that i waste $2many for a self assembled lousy sparkler that'd give a wheee sound when you finally switch it on

theoretically there's always a possibility to make the discreets that'd work in shown arrangement (if the existing ones do not...)

Computer simulation tools are just that, tools. Although you can build something with tools you cannot throw them all together in a random pile and expect the result to be the same as having someone who knows what they are doing using the tools to produce something that will reliably work.

Computer modeling software are brilliant tools but they are not perfect because the models and circuit layouts are not perfect real-world replicas and they don't take into account such things as electromagnetic fields or true real-world component interactions and resonances. This can result in bizarre and even impossible circuits working in the computer model that would never work in real life (for example through tuned resonance with enough playing with the simulated component values).

Try actually building the circuit on a breadboard, the parts are not that expensive or hard to come by and you should be able to see the results (or lack of them) plain enough using the equipment you have available to you.

(((sh¡t now i have to design an experiment (i donno anything about RF µ-Current PCB design rules + i hate testing stuff i don't know about if & how it works http://youtu.be/j5gaa6UL-3k + http://youtu.be/Bk5a8xCuSnc)))) - thanks pal