Hi all,
Trying to understand a simple comparator circuit but can't figure it out.
I'll explain :
I reverse engineered part of a linear power supply. The comparator's schematic part lights up a LED if there is a difference between the 2 inputs.
To create this issue one has to connect a load on the regulated PSU but wrongly. By that I mean instead of putting the psu's 5V rail to 5V, you put it on the ground or on a -12 or +12v rail.
- Basically i'm trying to understand what happens when you create this short circuit. How would it affect the comparators inputs and make the LED work.
In attach part of the comparator schematic (only for the 5V power rail part)
I hope I was able to make myself clear a bit... Else I will explain in more detail.
Trying to understand a simple comparator circuit but can't figure it out.
I'll explain :
I reverse engineered part of a linear power supply. The comparator's schematic part lights up a LED if there is a difference between the 2 inputs.
To create this issue one has to connect a load on the regulated PSU but wrongly. By that I mean instead of putting the psu's 5V rail to 5V, you put it on the ground or on a -12 or +12v rail.
- Basically i'm trying to understand what happens when you create this short circuit. How would it affect the comparators inputs and make the LED work.
In attach part of the comparator schematic (only for the 5V power rail part)
I hope I was able to make myself clear a bit... Else I will explain in more detail.
Attachments
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