Some months ago there was a flurry of posts here regarding experiments with driving white LEDs with a single AA or AAA cell. I futzed with the idea a bit myself, with pretty good results, but I didn't keep notes. (BAD experimenter!!)
Recently I described the neato circuit to a friend, then tried to write out a schemo for him. Could not remember all of it! I could describe making the bifilar wound xfmr alright, but the rest is a fog.
ISTR that TWO regulars here were in the forefront of this experimentation. Would one of you please post some schemos?