Conventional wisdom says you can’t build a flip-flop with just one transistor, but here we are. [roelh] has built a flip-flop circuit using only one transistor and some bizarre logic that’s ...

[Kevin Darrah] wanted to make a simple 3.3V regulator without using an integrated circuit. He wound up using two common NPN transistors and 4 1K resistors. The circuit isn’t going to beat out a ...

Figure 1 PWM amplifier circuit built around a two quadrant driver circuit. Here, R1 and C1 make up a modest filter for transistor Q4 ... is as fast as the original PWM signals. Further, delay is ...

They also did this on a glass substrate, minimizing the parasitic delay and enabling ... team was able to use these graphene transistors to construct radio-frequency circuits functioning up ...