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Lightning Detector Circuits

news.ycombinator.com Unknown 2025-07-30 21:07:31

Here's a version I built into a "fake" book I found at an art store. The copper PCB is connected to the circuit ground to act as a counterpoise for the antenna, increasing sensitivity. The lightning bolt was cut with a sharp knife then filled with blue-dyed epoxy. The antenna connects to the pin jack. I used a cheap flashlight head for the LED - I used too much blue dye in the epoxy so I need a bright flash! The image below is with an LED and no pot (but with the 150k resistor added). I made se

Topics: just lightning power resistor transistor
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The Unsustainability of Moore's Law

news.ycombinator.com Charles Rosenbauer 2025-08-23 02:07:03

Roughly every two years, the density of transistors that can be fit onto a silicon chip doubles. This is Moore’s Law. Roughly every five years, the cost to build a factory for making such chips doubles, and the number of companies that can do it halves. 25 years ago, there were about 40 such companies and the cost to build a fab was about $2-4 billion. Today, there are either two or three such companies left (depending on your optimism toward Intel) and the cost to build a fab is in excess of $1

Topics: chip chips gate transistors years
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MIT researchers bond gallium nitride transistors to silicon for faster next-gen wireless devices

techspot.com Skye Jacobs 2025-08-29 01:15:00

What just happened? A team of researchers at MIT, in collaboration with Georgia Tech and the Air Force Research Laboratory, has developed a new method for integrating gallium nitride (GaN) transistors onto standard silicon chips. As the demand for faster and more efficient electronics continues to grow, this innovation represents a significant step toward bridging the gap between cutting-edge materials and mainstream technology. Gallium nitride, a semiconductor renowned for its efficiency and h

Topics: copper gan high silicon transistors
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MIT researchers bond gallium nitride transistors to silicon chips for faster next-gen devices

techspot.com Skye Jacobs 2025-08-30 02:15:00

What just happened? A team of researchers at MIT, in collaboration with Georgia Tech and the Air Force Research Laboratory, has developed a new method for integrating gallium nitride (GaN) transistors onto standard silicon chips. As the demand for faster and more efficient electronics continues to grow, this innovation represents a significant step toward bridging the gap between cutting-edge materials and mainstream technology. Gallium nitride, a semiconductor renowned for its efficiency and h

Topics: copper gan high silicon transistors
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