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on 26/3/2003 2:15 PM, Dave Hall at dave@hallvw.clara.co.uk wrote: > It's a neat electronic mechanism. If I have worked this out right, the > transistor is on when power is applied, and makes an electromagnet of one of > the > concentric coils; that pulls the pendulum across, which produces a back EMF in > the other coil that opposes the transistor bias and turns it off, then the > pendulum swings back. > There is an adjusting system hidden by a label, ISTR. It looks like one of the coils must be broken, one has continuity while the other is dead. > Mine didn't want to go, and appeared to have an open circuit on one of the > coils. You need micro-surgery skills to repair that, but if it's past > mending, > it's possible to piggy-back a quartz movement to drive the hands once you've > removed the electronics stuff. You will also have a more accurate clock if > you > do! That might be a better idea, I have got the mechanical clocks a lot closer now though, I will see how I go. Thanks, Ben Doughney '75 1200L '63 1200 - Ringo '71 1600TL http://members.tripod.com/~superkafer/ ------------------------------------------------------------------- List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org