Re: Simple AC-DC embedded power supply


<sharpjon@xxxxxxxxx> wrote in message
news:1178308611.601917.183450@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I'm working on a design for a remote power control application
involving a wireless embedded computer tied to a relay. The device
will be mounted inside of a NEMA-rated outdoor enclosure and AC main
power will be available within the box. What is the best way to
provide regulated, 5V DC current to my embedded device in this
scenario? I am currently prototyping using a standard wall wart power
supply, but space may be tight in my enclosure, and is a wall wart
transformer really the best in this case?

I will be designing my own PCB for the embedded device. Should I
design a complete AC-DC power supply on this same PCB? Or should AC
power be more isolated from my embedded system?

If this a one-of, then anything that is safe and doable is fine.

If this will go into production, I'd design an on-board power supply ... a
basic step-down switcher followed by a 5-volt regulator or something along
those lines.


.

Relevant Pages

  • Re: SI and EMI training
    ... like I can do my next board level design with virtually no doubt about ... good background for digital equipment PCB design. ... Unfortunately adding one or two extra ground plane layers into the PCB ... Since this puts the power and ground ...
    (comp.arch.embedded)
  • Re: SI and EMI training
    ... like I can do my next board level design with virtually no doubt about ... good background for digital equipment PCB design. ... Unfortunately adding one or two extra ground plane layers into the PCB ... Since this puts the power and ground ...
    (comp.arch.embedded)
  • Re: Simple AC-DC embedded power supply
    ... will be mounted inside of a NEMA-rated outdoor enclosure and AC main ... I am currently prototyping using a standard wall wart power ... I will be designing my own PCB for the embedded device. ...
    (sci.electronics.misc)
  • Simple AC-DC embedded power supply
    ... I'm working on a design for a remote power control application ... I am currently prototyping using a standard wall wart power ... I will be designing my own PCB for the embedded device. ...
    (sci.electronics.misc)
  • Re: Simple AC-DC embedded power supply
    ... will be mounted inside of a NEMA-rated outdoor enclosure and AC main ... I am currently prototyping using a standard wall wart power ... Does it need isolation? ...
    (sci.electronics.misc)