Last two days I've spent in nature's lap, now I'm ready to think about ongoing things to do.

First of all I measured energy retaining rate more precisely:
- blue channel is voltage on gates of FETs
- yellow channel represents current on electromagnet, as always

- typical current here must be around 108mA (10V, 40% duty cycle avg.)
- we have 20.7mA
- 5.3mA is a consumption of a stabilization circuit and logic gates
- so, we can assume what electromagnets consumes 15.4mA
Result: approximately 86% energy retained!

All is great with that, but one problem is still there - noise. An it isn't a noise from switching circuit, experiment shows, that it depends on power supply voltage. Possibly it seen only on the oscilloscope and control circuit just ignore that, but it isn't something very pleasant : )
If you remember, we have ridiculous amount of wiring over PCB and this can be a source of oscillations.
Next task is to minimize them by designing a better board, now with two layers.

Also, we've made different top-cover for mold and it proved, what all problems of getting a great stripes was on account of not pressing everything tight enough. (see "log(6)" in project logs)

Next tasks:
- to develop a better version of PCB, minimizing HF noise
- to fabricate electromagnets with needed shape and resistance
- to connect everything together!

Not-so-close tasks:
- to built a hydrogen camera with inductance heater to manufacture pure-Fe cores for electromagnets, it supposed to improve characteristics of an electromagnet and also can help to get cores with needed shape