3.0M Ohm Resistor 50pcs

Description

50 Pieces 3.0M Ohm Resistors 3000000 ohm 1/4w 1/4 w 5%…

Tutorial: How to Use 3.0M Ohm Resistor

The 3.0M Ohm resistor is a fundamental component for electronic circuits that require current limiting or voltage division. This article is aimed at beginner and intermediate makers.

What you need

• Arduino Uno
• Digital Multimeter

Steps

1. Check the resistance using a digital multimeter to ensure it is actually 3.0M ohm.
2. Connect one end of the resistor to GND and the other end to the input pin of the Arduino Uno.
3. Write an Arduino sketch that reads the analog value from the input pin connected to the resistor.
4. Verify the results on the serial monitor of the Arduino software.

Example code

Stringa vuota

Mini project

Create a simple circuit to measure the voltage divided by a resistor and an LED. Connect the resistor between 5V and GND, then connect an LED between the voltage divider point and GND.

Common mistakes

• Do not check the resistor with a multimeter before use.
• Connect the resistor incorrectly to the microcontroller pins.
• Use a resistor with too low a value, which could damage the circuit.
• Forget to add a current-limiting resistor for the LED.

Recommended accessories

• Arduino Uno
• LEDs of various colors
• Current-limiting resistor 220 ohm
• Digital multimeter

Frequently asked questions

What is the precise value of the resistor?
Check the datasheet or with a multimeter.

How can I use this resistor in a circuit?
You can use it to limit current, divide voltage, or create an RC filter.

How much damage could it sustain if used above its maximum dissipation?
It may overheat and burn if it exceeds 250mW (1/4 W).