Re: Regulated 9 Volt DC Power Supply

On Dec 28, 10:32 pm, Chris <cfoley1...@xxxxxxxxx> wrote:
On Dec 28, 4:38 am, "Dave.H" <the19...@xxxxxxxxxxxxxx> wrote:

Can anyone help me with information on building a 9 volt regulated
power supply that runs off 250 volts AC mains? Any help greatly
appreciated.

Thanks,
Dave

Hi, Dave. The easiest and safest way is to buy a wall wart.
Hobbyists and other newbies probably shouldn't be experimenting with
line voltage.

Mouser supplies a 9V 5 watt regulated DC output wall wart with a
variety of snap-on outlet plugs which will operate with all
international line voltages and frequencies for $12.82 ea. in single
quantities. It's their part number 552-PSA-05R-090-R

http://www.mouser.com/index.cfm?handler=home

Cheers
Chris

I can buy a 9 v regulated wall wart, rated at 800 mA, but as I'm on a
tight budget, I can't pay the $AU30 for it. I ALWAYS use extreme
caution around high voltage. I've worked around high voltage in old
valve radios, and learned to keep my hands away from energized
equipment, I'm pretty comfortable working around mains voltage. If I
build this PSU it will be in a plastic box.
.

Relevant Pages

  • Re: Regulated 9 Volt DC Power Supply
    ... caution around high voltage. ... I'm pretty comfortable working around mains voltage. ... Dick Smith Electronics has a new regulated 9VDC@600mA output wall wart ...
    (sci.electronics.basics)
  • Re: System Failure - CPU Task
    ... No specs, then suspect the worst. ... a monitor that can report slow voltage changes. ... Can an AC mains loss of only a few ms cause power failure? ... If not, even a UPS ...
    (alt.comp.periphs.mainboard.asus)
  • Re: Low Frequency Mains Noise
    ... A very low frequency low level variation in the ... Because the noise is so small, about the only place you can see it is on ... signals on the mains itself. ... turn gear on and off randomly, the mains voltage level changes. ...
    (rec.audio.tubes)
  • Re: LED Lighting PSU
    ... going to use for initial testing of the LEDs because it said it can handle ... from its input to its output by converting the voltage at the input to ... the voltage the load needs to work properly, and supplying the current ... if you're working with 240V mains and the LED needs to have ...
    (sci.electronics.basics)
  • Re: ATX power supply repairs
    ... Most of the times the fault is found between the mains connection and the ... Check the voltage between pin 3 and pin 9 of the ATX-mainboard connector. ... ATX-PS's usually has three power transistors at the mains side. ...
    (sci.electronics.repair)
Loading