OK, calling me an amateur is being polite. But I am trying to learn more about how these circuits work.
One example I am learning from is the
ZX Spectrum ULA book. There is a oscillator circuit on page 87 that is really confusing me. I can post a picture if anyone wants but it's mostly irrelevant for my question.
Anyway, that circuit has a transistor where the base and emitter are tied to ground. But, the collector is tied to the base of another transistor.
Everywhere I read about transistors, the water analogy is used. But I then read this reference (https://electronics.stackexchange.com/a/61787/32770) that used a natural gas analogy which really made sense to me. Basically, the emitter is a pipe that goes deep underground to highly pressurized natural gas. The base is a valve and the collector is a pipe that just goes into the air. By turning the valve (base) on, the gas (current) is allowed to flow upwards into the air. Which is opposite of the
conventional current flow. This was an
ah ha! moment for me.
But, looking back at the circuit, it would seem that a transistor's collector tied to the base of another transistor would be useless because the valve (original base) would always be "on". So why have it? Why not just tie ground to the base of the SECOND transistor?
I hope my question makes sense. I can post the actual schematic if people need it.
Here is the diagram. Hopefully it will explain my question better.
Take a look at Q5 and Q6
It's embarrassing but it appears that my ancient eyeballs could not see the original connections of the transistors and that the base's are connecting to other items as well.
Thanks to @Ignacio Vazquez-Abrams for pointing that out. If this is true, would you mind answering it? I want to give credit where it's deserved.
BTW, thanks for rasterizing that photo!