Experiment—The Small Current Of The Relay Controls The Larg

Relays are usually used in automated control circuits. It is actually an "automatic switch" that uses small currents to control high currents. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. So what is the small current of the relay to control the large current? Today we did an experiment in the laboratory, everyone can see it more intuitively.

We connected a 24V load to the load of the relay, and we provided a DC voltage of 12V to the coil of the relay. As you can see, after we turned on the switch, we found that my low 12V current through the relay allowed us to 24V The strong current turns on.