triode

In super-simple triode tube circuits with no negative feedback loops, THD is pretty much linear to the volume.

Lilienfeld was the first who conceived some possible structures for a triode that uses a semiconductor instead of vacuum or gas.

From the picture it looks like this part is a dual triode device.

Back in the day, I used to build Class A directly heated triode tube amps for hi-fi.

In a vacuum fluorescent display, each illuminated element is a triode vacuum tube.

It sounds more like a triode or transistor variant, but with multiple features.

Be sure to check out the rest of this guys stuff, like the homemade CRT, flame triode, magnetic amplifiers, etc.

The Bell Labs team was indeed searching how to make a semiconductor triode (the word transistor has been coined after the discovery of the point-contact transistor).

So more like an optical triode (the transistor apnplifies).

Take the triode, for example, or the transistor.

I'm also really liking this Triode app [1] from the article.

This is analogous to relay-triode-transistor technology progression.

Fun fact, in British English the term for a vacuum tube triode is "valve" precisely because it operates like a valve.

While other technologies have a significant head start, much of the “head start” is transferrable knowledge, similar to the relay-triode-transistor-integrated circuit progression.

So your high-impedance guitar signal will not be all lost by finding an "easy" path to ground, and a nice strong signal appears at the input grid of one of the triode structures found within the dual-triode 7025 tube.

From Wikipedia: "After the war, Shockley decided to attempt the building of a triode-like semiconductor device." If attempting (and succeeding) in using one's knowledge to produce a specific thing that does not currently exist is not invention, what is?