ok i took a laptop that the hard drive and cdrom circits to conect them to the mother board were broken so i soldered a 40 pin ide cable in its place now to run my hd / cd rom i need an atx power supply and the laptop battery was gone so i have to plug it in to 120 ac.
so to power them i bought an inverter works great but i wanted it to shut down with the ign .
so to turn it on i used a momentary on relay schematic i found and soldered it to the power switch .
now to turn it off i bought a ups to use the parts but it works fine so i am going to try and use it so my idea is to go from the bat - inverter and take the inverters 120ac - ups then from the ups to the laptop and power supply it works i tryed but it beeps that i can fix but here is the question can i take the 12 volt from the atx power supply to run the laptop
attached ****ty *** pic
i have hooked a bigger battery to the ups it lasts a wial but i am going to hook up a relay so that it cuts the power to the atx power supply so that its not drawing any power make sence i hope so ( or i will hook a relay timer up to the switch on the ups to turn it off after 5 mins )