How do you measure slew rate practically?

Answer 1

To measure the slew rate practically, you can use an oscilloscope to observe the output voltage of a circuit in response to a fast-changing input signal, typically a step function or a square wave. Measure the time it takes for the output voltage to change from a defined low level (e.g., 10% of the maximum voltage) to a defined high level (e.g., 90% of the maximum voltage). The slew rate is then calculated as the change in voltage divided by the change in time (V/Δt). This gives you the maximum rate of voltage change that the circuit can handle, typically expressed in volts per microsecond (V/μs).