• •Michal Zalewski (lcamtuf) documented the use of reverse-biased transistors as avalanche oscillators for high-frequency output
• •The circuit achieves sharp, nanosecond-range rise times using low-cost components often salvaged from surplus stocks
• •Reliability remains a hurdle, as transistors are operated beyond their rated specifications and face potential thermal runaway or permanent degradation

Michal Zalewski has detailed the practical application of reverse-biased transistors in avalanche oscillator circuits, highlighting their ability to produce high-frequency pulses. Unlike standard signal generators that rely on precise logic gates, this method exploits the breakdown region of silicon transistors to create rapid switching states. However, because these circuits push hardware into non-linear, destructive operating zones, individual component longevity varies significantly. Whether this technique serves as a viable tool for hobbyist test equipment depends on a designer's willingness to accept the inherent unpredictability of these stressed components.