I've been thinking about OVP. Basicaly my thouhts started with using voltage difference between say +5 V and +12 V and what happenes if the appliance goes short. Than the high voltage (+12 V) appears on the low (+5 V), triggering OVP, right?
Now say I will remove this short and change it for linear regulator to control the voltage. I have some small output, say 1 A on each rail so PSU feedback works. Some of the power will probably be eaten from the higher-voltage rail first but sooner rather than later, if the linear regulator can handle the load ofc, higher voltage will appear on the lower rail, right? With the regulator I can control voltage present on lower rail and in theory, measure when exactly the OVP reacts. Will it work or am I out of the line here?
Now if that above works, say I have second, +24 V PSU. I connect both grounds so it works OK with correct reference and let the +24 V flow to +12 V. Than I can measure OVP for +12 V as well, right?
Now say I will remove this short and change it for linear regulator to control the voltage. I have some small output, say 1 A on each rail so PSU feedback works. Some of the power will probably be eaten from the higher-voltage rail first but sooner rather than later, if the linear regulator can handle the load ofc, higher voltage will appear on the lower rail, right? With the regulator I can control voltage present on lower rail and in theory, measure when exactly the OVP reacts. Will it work or am I out of the line here?
Now if that above works, say I have second, +24 V PSU. I connect both grounds so it works OK with correct reference and let the +24 V flow to +12 V. Than I can measure OVP for +12 V as well, right?
Half of the computer problems is caused by bad contacts 