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BJT bistable collector-base coupled circuit can be converted to a Schmitt trigger by connecting an additional base resistor to one of the bases Like every latch, the fundamental collector-base coupled bistable circuit possesses a hysteresis. each unit will be set and students will answer one question from each Unit. Najmabadi, ECE65, Winter 2012 Exercise 1: Find state of transistor and its currents/voltages. pdf instructional technology degree nyc. • BJT input stage: > 100kΩ, typically few MΩ; • FET input stage: ~10. So Enjoy these Mock Door Supervisor Exam to get enough knowledge for door supervisor real exam attempt. This will help you answer all the questions within the allotted time. 6/2/2017. There are two types of basic transistor out there: bi-polar junction (BJT) and metal-oxide field-effect (MOSFET), and there are actually two versions of the BJT: NPN and PNP. The current gain of a BJT will be reduced C. Also biggest thing I think that helped was to WATCH THE UNITS. 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