I have a question on the MK198 Led Buddy.
Can the tester be damaged if the testpads are accidentally shorted?
When looking into the schematic there are two paths, “LED H” and “LED L”, going to a controller (5v).
While “LED H” seems to be overvoltage protected through an voltage divider (4.5v max),
“LED L” seems to only rely on the voltage drop of the LED.
So when the test pad is shorted, this would mean that it is possible that “LED L” can be as high as 9v and thus damage the controller?
I mean this could happen very easily if the LED leads are incorrectly positioned or while trying to test small smd leds, especially as the gap between the pads is very small.
What will happen if the LED testpads are shorted?
Can someone please explain this part of the circuit to me, I am curious to understand this circuit.