Experimental box used for studying volt-ampere characteristic and resistance-temperature characteristic of thermistor

The utility model discloses an experimental box used for studying a volt-ampere characteristic and a resistance-temperature characteristic of a thermistor. The experimental box includes a box body and a box cover, a substrate is arranged in the box body, and a power switch, a power supply voltmeter head, a 0-10K[ohm] potentiometer, a microammeter gauge head, a milliammeter gauge head, a reserved wiring terminal used for being connected with the thermistor, four fixed resistors, an adjustable potentiometer, two single-pole double-throw switch, and an adjustable resistance box are arranged on the substrate; the box body is internally provided with an adjustable direct current stabilized power supply and a transformer, the reverse side of the box body is provided with a fuse base and a power supply base, the front end of the box cover is provided with a lock catch, the rear end is provided with a hinge, the box cover is internally provided with a pocket, a lock pin corresponding to the lock catch is arranged on a front wall of the box body, a hinge is also arranged on a rear wall, and a handle is arranged in the middle of the front end of the box body. The experimental box used for studying the volt-ampere characteristic and the resistance-temperature characteristic of the thermistor in the utility model is clean and tidy in structure, further helps students to master the volt-ampere characteristic and the resistance-temperature characteristic of the thermistor, and is convenient to use.