I am trying to build a voltage generator 0-10V to feed the input of a PLC ADC card (for simulation purposes). The PLC card has an input impedance of 133k. I am thinking to use the circuit from the picture below:
Since the signal will be applied with a pair of probes I want to implement short circuit protection. The protection is a classic one with a sense resistor (R8) and transistor (Q2).
When a short will happen (or the current will exceed the limit of 15mA) Q2 will open, limiting the base voltage of Q1 which in turn will limit the output voltage protecting the circuit.
Now... The voltage of feedback network (R6,R7) will go low. Because the op amp wants to have both inputs at same voltage will try to increase it's output voltage until the output will be close to it's positive power supply (LM358 it's not rail to rail).
My question is: an op amp with it's inputs at different voltages and an output close to positive power supply risks to be damaged?
Thank you in advance for your answers.