JFET的另一种接法变成漏电流很低的二极管，用在运放的保护电路中
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DIODECONNECTED FET PROTECTS OP AMPS Providing inputoverload protection for sensitive measure ment circuits proves difficult when you must not degrade the circuits performance in the process Its an especially tricky problem when youre measuring a materials dielectric prop erties In such an application see Figure 1 an ultralow input bias current op amp serves as a current integrator to measure a dielectrics response to a 100V step that limits the differential input to 06V if the dielectric shorts......
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