Discover how to measure resistance. Learn how to configure a digital multimeter and correctly probe a resistor. Find out why some DMMs have a range of resistance settings and how to choose the right one for your measurements.
- Since the actual value of a resistor…can be anywhere within five or even 10%…of its expected value, depending on the tolerance,…sometimes I want to measure the actual resistance…of a component before I use it in my circuit.…And I can do that with my trusty old digital multimeter.…To measure resistance, I'll have the black probe…connected to the com port…and the red probe connected to the right port,…with the ohm symbol above it.…Next, I'll need to turn the selector knob…to the resistance measurement mode,…which is indicated by the ohm symbol.…
My particular DMM has five possible ranges…to choose from for measuring resistance,…ranging from 200 ohms all the way up to 20 megaohms.…If you have a fancier DMM with auto-ranging capabilities,…you won't need to worry about selecting a range.…The range I select controls where the decimal point…will be located on the output,…so I can represent really large…and really small resistance values…on the same little screen,…which can only show three digits at a time.…If I choose too small of a range,…
- Reading electrical schematics
- Building circuits on breadboards
- Reviewing types of static and variable resistors
- Reading resistor color codes
- Measuring resistance with a DMM
- Measuring resistive sensors with an Arduino microcontroller
- Making electrical signal measurements with an oscilloscope
- Measuring AC voltage with a DMM
- Understanding the time domain and frequency domain
- Designing passive low-pass and high-pass filters
- Reviewing reactive RC and RL circuits
- The relationship between capacitors and inductors
Skill Level Beginner
Learning to use MakerBot 3D Printerswith Kacie Hultgren1h 5m Appropriate for all
Learning Arduino: Pulse Width Modulationwith Rae Hoyt1h 16m Intermediate
1. Building Circuits
Read electrical schematics6m 25s
3. Resistive Circuits
4. Oscilloscope Measurements
6. Alternating Current
7. Electrical Signals
8. Reactive Circuits
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