Current simulation demonstrator

The utility model discloses a current simulation demonstrator for teaching. A demonstration board is provided with a movable power supply, a bulb, a switch and symbolistic conducting wires composed of three or four groups of luminous devices which are mutually arrayed at intervals. A control circuit is a forward direction and backward direction cyclical sequential circuit with three-way output or four-way output and the sequential circuit can be used for making the luminous devices illuminate by turns for producing flow feeling. The microcosmic pictures of conducting the electricity by a conductive body and the current direction can be simulated to demonstrate. The current always flows out from the positive pole of the movable power supply and at last flows into the negative pole of the movable power supply. The utility model has the advantages of direct vision, visualization, strong stringency, mature correlation technique and stable and reliable operation and is particularly suitable for the teaching in primary and middle schools.