ok, so i get how for current moving in the direction of the cathode of a diode it goes into that depletion zone where it’s nonconducting, hence the open circuit.

but for current flowing in the direction of the anode terminal how does it pass through the diode?

I don’t know why but “drawer” was a word that was difficult for me to pronounce. In specific the ‘aw’ sometimes I say it as dr-awe-re other times i pronounce it as d-roar I don’t know why it’s strange to prononounce.

Techtronix. they were the primary oscilloscope maker in late 1900s, that was until oscilloscopes could be designed and manufactured in China for a few hundred bucks.

nowadays they seem to still pursue high end oscilloscopes, where they focus on increasing the sampling rate from 500 MHz (with cheaper oscillioscopes) to 200 GHz.

I still don’t know how they’re still in business. The entire model seems unsustainable to me given that one of those oscilloscopes go on upwards $200,000.