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How to Use
Phototransistor
How to Use an
IGBT
How to Use an
Amplifier
How to Use an
Interface
How to Use an
Oscillator
How to Use an
LCD
How to Use an
Undergravel Filter
How to Use an
Air Stone
How to Use an
Exacto Knife
How to Use
a Photodiode
How to Use an
Ultrasonic Sensor
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a Switch
3:48
YouTube
Arduino for all
How Optocouplers Work – in 3 Minutes!
In just 3 minutes, I’ll show you how opto-isolators (also called optocouplers) protect your microcontroller from high voltages using nothing more than light! Whether you're building with Arduino, Raspberry Pi, or any other system, this trick could save your circuit.
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