CN2634567Y

CN2634567Y - Experiment demonstrator for electricity and thermology

Info

Publication number: CN2634567Y
Application number: CN 03218116
Authority: CN
Inventors: 尹祥; 翟星林; 付延军; 翟庆国
Original assignee: PINGYIN TOWN CENTRAL MIDDLE SCHOOL PINGYIN COUNTY
Current assignee: PINGYIN TOWN CENTRAL MIDDLE SCHOOL PINGYIN COUNTY
Priority date: 2003-06-13
Filing date: 2003-06-13
Publication date: 2004-08-18
Anticipated expiration: 2013-06-13

Abstract

The utility model discloses an electric and thermal experiment demonstration instrument pertains to teaching instrument, more particularly an instrument used in physical thermal and electric experiment demonstration, the structure of which is that the upper layer panel of the instrument shelf taking a shape of steps is provided with an ampere meter and the wiring terminal, an electric clock, a voltmeter and the wiring terminal, a beeper and a plurality of upper layer wiring terminals, the middle step is placed with two electrical calorimeters of different internal resistance with the thermometers, the lower layer is fixed a power source wiring terminal, a double pole switch, a plurality of lower layer wiring terminals, at least two bulbs of different power and the wiring terminal, the base plate is placed a sliding resistor and at least a fixed resistance, the back of the lower layer panel is provided with the power source. Multiple of demonstration instruments are fixedly combined in one step-type instrument shelf so that different circuits can be connected according to the needs of teaching, thereby conveniently demonstrating the various kinds of electric experiments. The equipment has the advantages of convenient moving and wild application plane, which is particularly suitable for remote country middle schools.

Description

Electricity calorifics laboratory demonstrator

Affiliated technical field

The utility model belongs to instruments used for education, especially for the instrument of physics calorifics and Experiments of Electricity demonstration.

Background technology

The traditional method of middle school physical experiment is that the teacher is according to the experiment needs, the needed experimental apparatus of interim preparation, make up, not portable moving, particularly need to prepare a large amount of reserve instruments, become a difficulty for the relatively poor rural school of condition, some teacher has made some combination experiment equipment in recent years, but all is singlely to be used for electricity or calorifics or to be difficult for carrying out quantitative experiment.

Summary of the invention

The purpose of this utility model provides a kind of technical scheme that can finish the demonstrator of junior high school overwhelming majority electricity and calorifics lecture experiment.

The technical solution of the utility model is, electricity calorifics laboratory demonstrator, its structure is: be reometer and binding post are installed on the deck panels on the step-like instrument stand, electronic clock, voltage table and binding post, hummer and a plurality of upper stratas binding post, placing the electro-calorimeter of the different band thermometer of two internal resistances on the intermediate step, be fixed with power-line terminal on lower floor's panel, double-break switch, a plurality of lower floors binding post, the bulb of at least two different capacities and binding post, placing slide resistor on the bedplate, at least one fixed resistance, lower floor's panel back is equipped with power supply, has the lead that many connecting circuit are used in addition.

The beneficial effects of the utility model be electricity calorifics laboratory demonstrator with multiple demonstration instrument fixed combination on a step-like instrument stand, can move easily, connect needed components and parts according to the requirement of experiment of being carried out with lead during use and just can form corresponding circuit, carry out lecture experiment, because components and parts are all put in the panel outside, the student can be visual in image see circuit connecting mode, can demonstrate the series connection in the electricity easily, in parallel, the characteristic of series and parallel circuit, measure electric work, electric power, resistance measurement with voltammetry, thermometer uses in the calorifics, survey specific heat capacity, the electric work equivalent, experiments such as Joule's law.Owing to adopted electronic clock in energising, to carry out timing, improved accuracy of timekeeping.This equipment has conveniently to be moved, and characteristics such as wide application are specially adapted to the remote countryside middle school and use.

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model,

Fig. 2 is the left view of Fig. 1,

Fig. 3 is an electrical schematic diagram of the present utility model.

Among the figure, 1. panel, 2. reometer, 3. electronic clock, 4. hummer, 5. voltage table, 6. voltage table binding post, 7. reometer binding post, 8. upper strata binding post, the 9. electro-calorimeter of band thermometer, 10 power-line terminals, 11. double-break switchs, 12. swept resistances, 13. objective table, 14. lower floor's binding posts, 15. bulbs and binding post, 16. resistance, 17. bedplates, 18. power supplys.

Embodiment

Embodiment of the present utility model is as shown in the figure, electricity calorifics laboratory demonstrator, its structure is: be reometer 2 and binding post 7 are installed on the deck panels 1 on the step-like instrument stand, electronic clock 3, voltage table 5 and binding post 6, hummer 4 and a plurality of upper stratas binding post 8, placing the electro-calorimeter 9 of the different band thermometer of two internal resistances on the middle objective table 13, be fixed with power-line terminal 10 on lower floor's panel, double-break switch 11, a plurality of lower floors binding post 14, the bulb of at least two different capacities and binding post 15, placing slide resistor 12 on the bedplate 17, at least one fixed resistance 16, lower floor's panel back is equipped with power supply 18, has the lead that many connecting circuit are used in addition.Connect needed components and parts according to the requirement of experiment of being carried out with lead during use and just can form corresponding circuit, carry out lecture experiment, because components and parts are all put in the panel outside, the student can be visual in image see circuit connecting mode, for example demonstrate Joule law, can be according to the mode connecting circuit of Fig. 3, switch one energized, the clock voltage table that picks up counting, reometer is the display voltage electric current respectively, as long as read the thermometer temperature displayed value in the electro-calorimeter of experiment front and back, just can carry out relevant calculating.

Claims

1. electricity calorifics laboratory demonstrator, it is characterized in that: be reometer and binding post, electronic clock, voltage table and binding post, hummer and a plurality of upper stratas binding post are installed on the deck panels on the step-like instrument stand, placing the electro-calorimeter of the different band thermometer of two internal resistances on the intermediate step, be fixed with the bulb and the binding post of power-line terminal, double-break switch, a plurality of lower floors binding post, at least two different capacities on lower floor's panel, placing slide resistor, at least one fixed resistance on the bedplate, lower floor's panel back is equipped with power supply.