5.3 Bench supply and electronic load

Outcome 3 of 6 in domain 5 · Instrumentation and measurement

Limit the current, discharge at constant current.

My targets

I declare:

Set a bench supply in voltage and in current limit, and explain why you bring up a new circuit with the limit low.
Discharge a cell at constant current with an electronic load and plot its curve.
Measure a pack’s internal resistance by the two-load method.
Explain the difference between voltage and current regulation, and when the supply switches from one to the other.
Use a function generator to excite a filter or an amplifier and plot its frequency response.
Diagnosis: a circuit that starts badly on the bench supply and well on its battery, current limit too low or wires too thin; measure the drop.