Gain (electronics)

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/gain-electronics

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the core function?To increase the magnitude of an electronic signal, typically voltage or current
2. What is the common measurement?Expressed in decibels (dB), a logarithmic unit representing a ratio
3. What is gain in electronics?Gain is how much stronger a signal becomes after it passes through a device. It shows the ratio of the output strength to the input strength. It helps weak signals get louder so we can hear or use them.
4. Why do amplifiers need an external power supply?Amplifiers don't create new energy; they use power from a battery or wall outlet to make the input signal louder. The extra power lets the device control more current or voltage.

Signal-to-Noise Ratio (SNR): A measure that compares the level of a desired signal to the level of background noise.
Bandwidth: The range of frequencies over which a circuit or device can operate effectively.
Feedback: A process where a portion of the output signal is returned to the input, affecting the amplifier's behavior.