DC ballast simulation is not working (3 coils transformer)

[Willen]

I recently learned to couple coils in LTSpice to make a transformer using "K1 L1 L2 L3 1" command then started to experiment/simulate DC ballast and AC to DC simpler SMPS. These devices has similar transformer with 3 coils- 1) flux generator, 2) feedback and 3) output.

Using same type of command I got two coils transformer working but using same type of command 3 coils transformer circuit is not working. In real world, these Devices are working. I also got failed to simulate AC to DC SMPS with 3 coils transformer.

 

[Willen]

Simulation file is in the post #1 and here is the circuit of the simulation (for Quick view)-

 

[Mikebits]

Willen, You impress me. I am always pleased to see younger people show as much interest in a useful en-devour as you do. Keep it up and you will be running your own electronic company some day

 

[alec_t]

Try reversing the polarity of L1 or L2 and increasing the value of L1 to, say, 1mH.

 

[eTech]

As alex_t said....reverse polarity of L1 or L2, but change L1 and L2 to 1mh, and L3 to 100mh

 

[Willen]

Willen, You impress me. I am always pleased to see younger people show as much interest in a useful en-devour as you do. Keep it up and you will be running your own electronic company some day

Hi Mike,
Thank you for concerning about me. But I am not a such lucky guy for electronics. I am not VERY younger (27th year) and till that day I lost a chance of study of electronics in university. It made me just a hobbyist now a days and learning myself slowly without direct course and guidance. Now completed university and became a teacher in school. Though addiction of electronics made me mad!

Try reversing the polarity of L1 or L2 and increasing the value of L1 to, say, 1mH.

Yes, I just reversed L2 (main flux generator coil of 40mH) and it's working! It is amazing that I made a circuit posted in #2 and it's working (lightning 20 LEDs bulbs in series from 12 volts, total LEDs forward voltage became 48V). But simulation needs 'reversed inductor'. I carefully saw phase dots of circuit at #2 post and made successfully. Can you guess why simulation needs reverse phase dot inductor?

(I think simulation's phase dot is correct transformer however how I got the circuit at #2 working, wondering!)

 

[Mikebits]

Oh, I thought so because I thought I heard AG say something along those lines. My bad Well I still like your enthusiasm.