Brief switch controlled indicator LED circuit

Lighting an LED is a simple circuit that is a part of many demonstration circuits. There must be enough voltage to light the LED and a high enough value resistor to protect the LED and the resistor from that voltage.

Brief circuit schematics with short video – List of pages

Diagram

Most beginners will probably power this circuit with a 5V supply. So a 220Ω or higher resistor will work well.

Simple pushbutton switch controlled LED circuit schematic diagram by electronzap electronzapdotcom
Simple pushbutton switch controlled LED circuit schematic diagram by electronzap electronzapdotcom

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Brief polarity indicator LEDs circuit


Video

Quick switch controlled LED circuit schematic to breadboard build

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