I tried to find an appropriate answer for the question but couldn't find what I needed exactly. I found out that "Initially the output from the PIC is floating and we use the pull up resistor R7 to turn OFF the transistor". My specific questions are:
- How will the floating output from the PIC affect the base of the transistor? Will it make it fluctuate between ON/OFF state?
- What would happen if we don't have the pull up resistor?
- Is there any risk of the transistor being destroyed because of the floating output form the PIC?
- How will the pull up resistor put the transistor in OFF state when there is floating output from the PIC?