Hi everybody
I have a DMM it's VC9805. For measuring the output current of this Buck module, I used it this way:
Then I connected the red test lead to 20A and set it to DC mode(it is in DC mode itself) and connected the test leads to the output of the module. and when I turned the supply on, BOOOOM!
Burnt out.
Why? (I think there is a big load in DMM to draw current)
I want to measure the current on my board. I want to know Is my MCU(STM32F103) drawing current or not(want to know it's functioning/working or not). but I'm worry that maybe it would burnt out my debugger(it's J-Link) or my MCU. Should I be worry?