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Jameco Electronics Puzzler: Headlight Trap

By Forrest M. Mims III
Puzzler 14

What are some ways for government agents to design an automatic "headlight trap" to detect banned incandescent headlights?

It's 2020, and the government has banned incandescent car headlights. Instead, expensive LED headlights must be used. What are some ways for government agents to design a passive, automatic "headlight trap" sensor to accurately tell the difference between LED and banned incandescent headlights? The sensor should be small enough to be mounted on the dashboard of a law enforcement vehicle and easily carried by a miniature headlight enforcement aerial drone designed to cruise over highways at night.

What are some ways for government agents to design an automatic "headlight trap" to detect banned incandescent headlights?

Puzzler hint: Think about some fundamental differences between incandescent lamps and LEDs.

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