Typical laboratory experiments in the introductory undergraduate physics course, such as those studying the series RC,1–3 RL,4 and RLC5–9 circuits, use signal generators to generate the input voltage signals and oscilloscopes to perform the voltage measurements. The experiment described here turns a standard function generator into a wireless function generator. This is done by connecting the function generator to an LED lamp, which sends the signal via light to a receptor consisting of a small solar cell connected to the circuit to be powered. We used this Li-Fi-inspired idea to increase the motivation of students for simple circuits.
As stated in Ref. 10, “LiFi is a new way of connecting to the internet which uses light. It can overcome the spectrum crunch because light has the ability to unleash 1,000 times more bandwidth than radio for carrying data.” Li-Fi uses light beams to send data wirelessly...
