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RREB Posts

Pinball Machine repair

Under the playfield of the Jurassic Park
Under the playfield of the Jurassic Park

My dad owns a couple of Pinball machines, for the last year or so they’ve been sitting with “out of order” signs on them so I thought it was about time they got some maintenance and I did some repairs when needed. As well as fixing the things that needed it we did a clean of the playfield and I took a heap of photos of different parts. Pinball machines really are an amazing electro-mechanical device and it was good to contrast the relative simplicity of the older Playboy (1968) to the newer Jurassic Park (1993).

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How to sort components

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So I finally got serious and decided to sort out my resistor mess. Some time in my first year of studying electronics I purchased an assorted bag of resistors from Jaycar. None of them had any markings on the paper retaining tape stuff, my lack of motivation for sorting them ended up in them being stored in a box and essentially forgotten about.

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Variable DC Power Supply Build

Power supply front panel: voltage adjust and current limit potentiometer knobs somewhere between China and AU
front panel: voltage adjust and current limit potentiometer knobs somewhere in transit between China and AU

So I’ve wanted a reliable bench power supply for a long time and it’s always been on the “to-do” list. As I’ve learned more and more about electronics I’ve considered building one at different stages and now I’ve finally done it.

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