Explore how two resistors connected in series create a voltage divider circuit that converts an input voltage into a smaller output voltage. Learn how to select the right resistor values to achieve the desired voltage divider ratio.
- [Narrator] A voltage divider is a simple circuit…that consists of two resistors in series.…The voltage divider takes some input voltage,…referred to as V in,…and outputs a specific fraction of that voltage…based on the ratio between the two resistors.…To understand how a voltage divider works,…I like to think of the electrical current…passing through a wire like cars traveling down a road.…In this scenario, we can think of the…individual resistors as rough patches in the road…that make it difficult for the cars to pass through.…
A resistor with a small resistance…might be like some gravel, or a slick spot on the road.…It's just a minor inconvenience for that traffic.…But a resistor with a large resistance…would be more like a pothole,…or some large debris in the road.…It causes a lot more trouble for the cars going through.…Now, consider these two resistors connected…to a three volt source as the input voltage.…Both of these resistors are like obstacles on the road,…and the resistances will add together…to increase the overall difficulty of traveling along it.…
- 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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