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Klaas Robers wrote:A lens from a slide projector can make an image of the size of a slide. Realize that for the Nipkov camera the disc is the slide, so the hole pattern should match the size of a slide or slightly smaller.
To have an easy start, you should have saved the distances of the slide projector before you scapped it. Then rebuild it with the Nipkov disc at the position of the slide and the photo transistor at the position of the filament of the projection lamp. Then you need only small adjustments for an optimal result.
It is easier and better to steal a good layout than to design a bad one yourself.
aussie_bloke wrote:With the template for the disc, it was still slightly bigger than the record but I was able to fudge it a bit but the edge hole is literally close to the edge of the disc.
aussie_bloke wrote:So I believe amplification is needed between phototransistor output and LED driver.
aussie_bloke wrote:After I fix that issue I will then have to contend with the arrangement of the optics. I am seriously thinking of putting the condenser lenses back into the slide projector lens cradle and sticking the phototransistor in place of the halogen globe.
aussie_bloke wrote:G'day Gary.
I actually got the template printed out at a print shop in Wollongong so their printers must be out of calibration, my printer from memory is pretty well accurate as I've printed CD sized discs which fit over them perfectly.
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