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Note: The project is experimental. The project is low power and low voltage, and requires a low voltage source which can be derived from a mains transformer. However there are significant risks with building mains powered projects. For that reason, it is advised to use an external enclosed AC to low voltage mains transformer unless you’re a qualified engineer.   Introduction When working with analog circuits it can help to have a linear power supply. I use a Thandar supply at home, b ...
Introduction Many integrated circuits nowadays have a pad on the underside that needs to be soldered down. It can (for instance) serve as a ground connection or it might be needed to be soldered for better heat dissipation. Since the pad is not exposed on the edges of the device package, it can be awkward for prototyping. Ordinarily the solution is to use a reflow oven, a hot plate or a hot air tool. But, it is also possible to just use a soldering iron. I'm not sure how common this technique is ...
Note: This is part 1 of a two-part project. For the second part, see here: Building a Low Cost Solder Fume Extractor - Part 2   Introduction I’m sure I’ve created some really stinky projects, but this isn’t one of them. After the last project that sucked, I hope this is the last one to do so for a while : )   I’ve wanted a solder fume extractor for home use for ages – they are quite pricey though. In particular the ones that filter the fumes.   As ...

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