1.2V LED driver dev.

it's quite simple to make 24% to 42% efficient 1.2(read 1.46V) "Step-Up"-s or - a less simple - up to 60% efficient (but then low current) 1-s . . . . . . . . . this one promises to be exception to prev. - K-words ::

• 100µH
• a "right" frequency & duty cycle
• special set of transistors

the img. name is misleading relict !

futher to implement ::

• sw2 & feeding the oscillator from HiVtg. after start up
• adjusting the cycle according to emptying of the battery
  from (1.46V,250mΩ) dn2 (1V,1Ω)
• optional blinking mode when battery is too low
• other