|| LM555 || Flashing Railroad Lights

This circuit flashes two red LEDs for a model railway crossing.

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Step 1: Construction Materials and Tools

Construction materials :

Resistors

• Ra = 68kOhm
• Rb = 39kOhm
• RL1, RL2 = 220 - 470Ohm

Capacitor

• C = 47uF/16V

Semiconductors

• LM555
• Led1, Led2

Τhe required tools :

• Breadboard
• DC PowerSupply+12Volt
• Some wires

Step 2: Follow the Steps

Follow the steps like in the photos...

Step 3: Follow the Steps.

Follow the steps like in the photos...

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