| 摘要 |
PURPOSE:To perform accurate measurement rapidly, by a method wherein the most sensitive one among a plurality of measuring circuits is automatically selected. CONSTITUTION:Discharge current is detected at a discharge current detecting member 1 and transmitted simultaneously to three measuring circuits 2-1-2-3. The three measuring circuits 2 compries, for example, measuring circuit 2-1 having sensing magnification of one time, measuring circuit 2-2 of 10 times, and measuring circuit 2-3 of 100 times. Outputs of the measuring circuits are transmitted to an analog switch 7, and individual overflow currents of the measuring circuits 2 are transmitted to AND circuits 6-1-6-4. As long as all measuring circuits 2 do not become overflow condition, display of overflow is not effected, and the most sensitive measuring circuit is automatically selected. |
