The current limiting circuit, though, is where things get interesting. Rather than use an op-amp, [DiodeGoneWild] chose a simple discrete transistor current-sense circuit. To make it less ...

But lacking a better explanation, I will stick to my initial guess that this is a current sense circuit. There are several zener diodes on the board, but only one of them has an elusive datasheet ...

STMicroelectronics’ TSC1801 low-side current-measurement amplifier integrates matched resistors to set the gain, which simplifies the circuit design and ensures ... high-bandwidth current sensing, and ...

Danisense’s current transducers now offer simplified plug-and-play setup and greater measurement accuracy in laboratory ...