What is the maximum value of the resistance of the pull-up resistor, such that you avoid floating when the switch is open? pull-

Question

Natasha_Volkova [10]

3 years ago

13

What is the maximum value of the resistance of the pull-up resistor, such that you avoid floating when the switch is open? pull-

up

Physics

1 answer:

makkiz [27] · Answer 1 · 2022-06-12T05:27:01+03:00

Answer:

Resistance of order of 10Kiloohms

Explanation:

Pull up resistors are essential in every microcontroller devices or digital circuits. Which helps prevent floating ( a process of not being able to determine the state of a pin) It works by allowing the state of a pin to be in either a high state or low state. A resistor is connected between the Vcc and the pin.

When the switch is open, the entire voltage flows through the resistor (V=IR). When the switch is closed the pull up resistor and the internal impedance of the pin form a voltage divider to limit the current flow.