/diy/ - Do It Yourself

Anonymous Tue Sep 1 10:39:36 2020 No.1900246 [View]
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>>1900187

18F47K42

Question for a different project:

I have an LCD that "pulses" (dims) when a solenoid is triggered (switched on) and returns to normal brightness when the solenoid is in its off state. I've decoupled my power rails with 470uF and then 1000uF and then 1500uF (all failing to help much) before finally using a 3000uF cap. The solenoid is running on a different 12V net than the LCD + MCU (which are on the same 5V net). I'm just a hobbyist and I don't really know best practices in a case like this. The 3000uF cap seems to work okay but not perfectly. Should I use 2x 1500uF instead (I've heard this can sometimes be a good idea) or am I just not doing this correctly?

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/diy/ - Do It Yourself

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