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ATX PSU With QL
Posted: Wed Jun 12, 2019 8:06 pm
by robheaton
Came across these videos today showing a QL being powered with an ATX Power Supply.
https://www.youtube.com/watch?v=IxedNWQ7VvM
https://www.youtube.com/watch?v=l8P8wsd ... e=youtu.be
Has anyone on here tried this?
Re: ATX PSU With QL
Posted: Wed Jun 12, 2019 8:17 pm
by Artificer
I've powered an Aurora board QL from an ATX power supply but never a vanilla motherboard.
Cheers
Re: ATX PSU With QL
Posted: Wed Jun 12, 2019 8:47 pm
by Dave
Don't do this.
Re: ATX PSU With QL
Posted: Tue Jun 18, 2019 10:10 pm
by Problemchild
?Um yeah it works but rather a bodge to say the least
Probably better in terms of making a viable permanent job would be to take the 12 V from the PSU use one of those switch mode modules to bring that
down to say 7-8 V (The higher voltage is to allow for the line to sag when under load!) and maybe another switch mode module for the Vin- to 5V then generate the +- 12 V voltages from either a Max232 or the like to get the voltages to drive the +- 12 volts for the RS232 and the Modulator not a lot of current is required for this!!
All depends on what needs you have ....Might be better to fix the PSU if that is an issue.
Also those transistors he mentions are in fact 78l/79l regulators