# Help understanding a simple control circuit

I come from a non-electronics background and I'm interested in understanding the operation of the following circuit configuration. The drawing is very crude, but this is the representation that I have available:

I do recognize some elements, like the resistance and the ground (lower pointing triangle.) The left-pointing triangle seems to be an op-amp from a quick search in Google. Besides the translation, I'd like to have a clear idea of how this circuit would work.

• Where did you find this? Oct 11, 2022 at 11:08
• The circuit image in the question makes little sense to me. Oct 11, 2022 at 13:04
• Not enough context to suggest an application of this circuit. But "V" must be an input, which by default, makes "I" an output. The left-pointing triangle might indeed be a standard opamp. It might also be a transconductance-type amplifier (which has voltage inputs, and current output). Oct 11, 2022 at 13:39

Here's how the circuit would work. Assume voltage at non-inverting lower terminal of OP-amp be $$\V_a\$$ and at the upper terminal $$\V_b\$$. $$\V_b\$$ is connected to ground so current will flow from current source I through the resistor R.