new to Multisim & simulation problem

[renzen]

Hello all. I'm new to Multisim. I downloaded a trial version of Multisim for testing. I make a simple joule thief using a 1k resistor, a npn transistor(2n2222), a led, DC voltage power source, and a couple inductor (set both inductance to 10uH). It's not running like my old software simulation. the led is off and the result from transient analysis is not like i expected. I suspect the problem is came from the couple inductor. I test the other circuit and the simulation is fine. Can anyone help me why the simple joule thief circuit is not running? Thank you.

[renzen]

Problem solved. Put a switch and run perfectly :) Thank you

[Phoenix_52]

Hi Renzen,

Can you please upload the ringer circuit you made. I need the same circuit for a project that I am working on( PV systems)

Thanks,

Mustafa