I would use switching regulator if i know how. I've never used them and I'm a little worried about noise emissions.

Are there some guide that would help me to design circuit that will comply with standards?

How come You don't have any problems?

When powering from 14.8V to 3.3V at 130mA it has to dissipate almost 1,5W. Isn't that much for SOT-223 package?

I'm using 10uF at both sides.

Even 3.3V regulator in TO-220 package is not enough and overheats..

Hello, I'm building commercial project based on esp32. It uses ESP-wroom-32 module, instrumentation amplifier and one mosfet. ESP32 is in BT mode. It is used in motorcycle so I would like to power it from ignition coils 14.8V. But how? I've tried using AMS1117-3.3, but that overheats and shuts down....

Hello, I'd like to use ESP32-PICO-D4 in my motorcycle data-logger module. First of all - do i need anything more that things in "peripheral schematics" in datasheet to run module? Secondly - 5 meters of wifi range is more than enough for me, then do i need to make matching circuit (L5, C27, C28) for...