| 摘要 |
The indicating device comprises a bridge network having on one side thereof a first resistance arm (R3) connected to a second resistance arm (R2) and on the other side thereof, a first voltage arm connected to a second voltage arm, there being between the junction of the first and second resistance arms and the junction of the first and second voltage arms a transistorized amplifier circuit (Q1, Q2, Q3) and indicating means (M1) responsive to changes in the balance of the bridge network so as to indicate or measure the resistance or variation in resistance of a subject such as a body are part connected to the network across one of the resistance arms. The indicating means includes a moving coil meter which includes a split metal frame having a meter coil wound thereon and an indicating needle coupled to the frame. <IMAGE> |
