I have been trying to grok the common base amplifier, and put together a few examples, but there is something that I do not get at all. I have the setup below. Things are working more or less as expected, but I measured the resistance of the bias divider, and even though I have a \$50k\$ and a \$100k\$ resistor, I measure \$\sim 33k\$ across both parts of the bias divider. Why does this happen?
I suspect that \$R_2\$, \$R_4\$, and the BE junction make up one part of a divider somehow and \$R_1\$, \$R_3\$, and the BC junction make up the other. Am I on the right track? How can I calculate these results reliably?
I should mention (since it's probably nearing finals time for students) that I am not a student.