Lost Design

My dear wife encouraged me to put some order into my many hundreds of electronics magazines. Sandwiched between them, I found one of my best designs -- unpublished.  It is a battery-less wind-up torch / flashlight with FET regulator. With a ten-second "punch" of energy to a super-capacitor, it delivers 7 minutes' high beam or 45 minutes' reading light. OBSERVATION: At one time, I turned out dozens of designs a year -- so I could easily lose track of one.
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NOTE: The lost design was subsequently published in EPE's IU column, I forget when. Falling voltage on the FET's gate increased conduction to the torch.