In most circuits the photo diode is reverse biased, so that charge is carried by extrinsic charge carriers. The response time of a photo diode is typically 250 nano seconds.

Thankfully, Adafruit has a video that explains how they work. Diodes protect your circuits by forcing the electrical current to go in a specific direction.

The discussion of how the diodes work reminded us of a modern tutorial we just ran across this weekend. It’s a bit bizarre, but explains the PN junction in a different way than we’re ...

In the simple ‘precision rectifier diode’ case, this situation is generally solved using the ‘improved precision rectifier’ (google if need be) circuit, but that would definitely need a negative rail ...

Two of these were diode types. More examples of Williams VFC designs incorporating diode pumps are detailed in his fascinating (and entertaining!) narrative of his creative design process: “ The Zoo ...