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热丝加热 Uh…………................................................6.3 V Ih…………..................................................0.6 A 极限额定值 A1类放大（每边） Ua…………………………...............................450 V Ik………………………….................................20 mA Pa …………………………...............................5 w Pa(No.1+No2) …………............................7.5 w Rg …………………………..............................1 MΩ Uhk…………………………...........................±100 V 静态参数 Ua ………………………….............................90 250 V Ug…………………………..............................0 -8 V Ia ………………………................................10 9 mA Gm…………………………............................3 2.6 mA/V Ri…………………………............................. 6.7 7.7 kΩ μ………………………….............................20 20 Ia（当Ug=-12.5V）........................... _ 1.3 mA Ug（当Ia=-10uA）....................... .....- 7 -18 V |
