I've kept on tweaking the circuit, using only values I need as opposed to going-all-out.
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- SR503 schottkey, limits surges to 30V 5A to protect voltage regulator.
- 1N5250 zener, limits surges further to 20V, well below LM1084 30V abs max and over 12-15V normal operating condition.
- 1N5246 zener, limits surges to 16V, voltage divider is designed with a 16V max.
I read about condensation in automotive applications. The circuits in my instrument cluster are covered in a clear product, but what about the in-circuit fuses and those in the fusebox? Those aren't covered and yet they don't pop a gasket when I have to scrape the INSIDE of my windshield. Are 5V logic circuits that much more sensitive as opposed to 12V automotive circuits?
Side question: can I use ordinary water-based lacquer spray to protect the assembled circuit? Or do we really have to use the specialized products?
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