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A Beginner's Guide to Circuits by Øyvind Nydal Dahl

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5THE BLINKING LED

THIS CIRCUIT MAKES AN LED BLINK ON AND OFF.

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THE CIRCUIT DIAGRAM

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THE PARTS LIST

PART

VALUE

DESCRIPTION

U1

74C14

Hex Schmitt trigger inverter

C1

100 μF

Polarized capacitor

R1

10 kΩ

Standard resistor

R2

470 Ω

Standard resistor

LED

 

Standard-output light-emitting diode

ABOUT THE CIRCUIT

One of the first things I wanted to learn in electronics as a kid was how to blink a light. You can do this in one of several ways, but this circuit is probably the easiest way to do it, especially because it requires so few components. ...

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