| 摘要 |
<p>PURPOSE:To obtain an ammeter which does not require any change in connection states of measuring leads and free from the burning of a resistor, etc. CONSTITUTION:The title ammeter is provided with a current measuring resistor 21 which is connected between paired measuring terminals 20a and 20b and can detect the maximum value, variable-gain voltage amplification circuit 22 to which the voltage across both ends of the resistor 21 is supplied, and indicating instrument 23 to which the output voltage of the circuit 22 is supplied and the measuring range of the instrument 23 is changed by changing the gain of the circuit 22.</p> |
