N.R.M.R.E. An investigation.

[nelsonrochaa]

A couple more items I dug up.  (While hunting for Verpies' totem pole lossless clamp circuit)

Hi Dog , hope you are nice , that circuit that you show in photo is other variant of same circuit , but unfortunately i don't have that circuit with me , i send some months ago to a friend in USA to him replicate  .   In general the two circuits only have some small differences but the base of operation is basically the same .
Wish you all the best

Nelson Rocha


 

[TinselKoala]

Progress report:

[Jimboot]

Very nice, almost steampunk.  Are they the same gauge on both winds? They look uneven.

[TinselKoala]

First light.

Well, it makes one hell of a Joule Thief, I'll say that much for it. 2.1 volts and about 210 mA input, lights up a NE-2 neon brilliantly. One "typical" Collector trace shown on the scopeshot. Adjusting the pot causes some radical changes. Still exploring.

[TinselKoala]

Very nice, almost steampunk.  Are they the same gauge on both winds? They look uneven.

No, not the same gauge, the thin stuff is #27 and I don't know what the thicker stuff is. I would have used the thicker stuff all around but I ran out after one winding of 50 turns.

The core is a small CRT deflection yoke. I also have some smaller ferrite toroids wound and ready to swap in.