Experiments

1.The basic principle and operational method of measuring resistance by D.C. single-arm electric bridge Wheatstone bridge.

2.The basic principle and operational method of measuring resistance by D.C. unbalanced bridge.

3.According to different resistances, measuring resistances by different bridge and bridge-arm resistance's primary method and unbalanced electric bridge.

4.The meaning of measuring resistance by three-terminal method of single-arm bridge.

Features

a) The instrument includes voltage type digital current detector and current type digital current detector.

b) The panel is marked ad-hoc bridge circuit graphics. It is convenient for students to fix up different kinds of bridge circuits by themselves.

Specifications

Typical experiments and data

Measuring resistance by Wheatstone bridge

1．Two-terminal method：

2．Three-terminal method：(optional)

Experiments of D.C. unbalanced bridge

1．Measuring resistance by unbalanced bridge voltage output: by horizontal bridge. (option for choosing types of bridge)

2．Measuring resistance by unbalanced bridge power output: by vertical bridge. (option for choosing types of bridge)

3．Measuring copper resistance: (by heating device of unbalanced bridge

    (1) Measuring copper resistance by balanced bridge

    (2) Measuring copper resistance by unbalanced bridge voltage output

4. Measuring thermistor:(equip with heating device of unbalanced bridge The experiment equip with 2.7kΩ MF51 semi-conductive thermistor

Optional Parts

SEM-5009-01, Unbalanced Bridge Heating Device, Single Stove

SEM-5009-02, Unbalanced Bridge Heating Device, Double Stove

SEM-5009-03, Unbalanced Bridge Heating Device, with Copper and Aluminum Resistance