For the past couple of days, I’ve been working on an improved version of the phosphorescence detector circuit. My goal is to improve the device’s sensitivity and reduce signal settling time, so that we can make more precise measurements of faint and extremely short-lived phosphorescence — and hopefully, publish some interesting results.A major factor that limits photodiode performance is the fact that the device resembles a capacitor; the diode’s parasitic capacitance gets in the way of amplifyi...