Cursed circuits #6: reverse avalanche oscillator

🫧 Open on Bubbles Last year, I published an article titled “It’s hard to build an oscillator” : The title alluded to the fact that there’s no shortage of oscillator circuits on the internet, but many of them use unusual parts, need weird supply voltages, or don’t work well (if at all). But sometimes, bad rises to an art form. Here’s probably the most puzzling bad oscillator you can assemble today with the parts you have at hand: Reverse avalanche oscillator. Other small NPN transistors should also work. At