I am working on a revision of an existing product. This new revision will be powered by a 12 volt automotive type battery. This battery will also power a 1/3 hp dc motor. Noise is a concern.
I am attempting to add a little noise protection to my power supply. After reading everything I can find, I have designed the power supply circuit to look like the attached image. V1 is a 12vdc to 5vdc regulator and V2 is a 5vdc to 3.3vdc regulator. Additionally, I have a .1uF cap placed next to all vcc pins and the avcc pin for the avr and the vcc pins for all other integrated circuits on the board. Is there more that I should do?
Thanks
I am attempting to add a little noise protection to my power supply. After reading everything I can find, I have designed the power supply circuit to look like the attached image. V1 is a 12vdc to 5vdc regulator and V2 is a 5vdc to 3.3vdc regulator. Additionally, I have a .1uF cap placed next to all vcc pins and the avcc pin for the avr and the vcc pins for all other integrated circuits on the board. Is there more that I should do?
Thanks