The phototransistor exhibited response times in the hundred-microsecond range, addressing common limitations seen in gain-speed trade-offs. The self-aligned gate also reduced variability associated ...

He got his hands on an infrared phototransistor which had been used as part of the remote control for some consumer electronics. Snooping around with his multimeter helped him establish the pin ...

[Tweepy] wanted to measure and quantify this effect, and found a way to do so with an NPN phototransistor, a resistor, and a 3.5 mm audio plug. The phototransistor and resistor take the place of a ...