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Problem Statement: Design a small-signal voltage amplifier using BJT's that meets the following specifications: 1) Voltage gain of 50 or more 2) Minimum input resistance of 15 k? 3) Output resistance less than 100 ? 4) Maximum unclipped output of 2V peak-to-peak 5) Power supply voltage of 9 V 6) Lower current drain from supply voltage?
Hint: You may use a multi-stage small-signal amplifier to achieve desirable input resistance, voltage gain, output resisntace, etc. A common-emitter amplifier with an emitter resistance RE, but without an emitter by-pass capacitor CE is good for high input resistance, common-emitter amplifier using an emitter bypass capacitor is good for high voltage gain, and the use of an emitter follower results in a low output resistance.
Name each chemical.
To identify a diatomic gas (\rm X_2), a researcher carried out the following experiment: She weighed an empty 1.00-\rm L bulb, then filled it with the gas at 1.10 \rm atm and 23.0 ^\circ\rm C and weighed it again.
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draw the structure or structures of ALL the carbocations that could potentially form from the alkenes, and 3) label each carbocation as primary, secondary, or tertiary.
A piece of indium with a mass of 16.6 g is submerged in 46.3 cm3 of water in a graduated cylinder. The water level increases to 48.6 cm3. The correct value for the density of indium from these data is
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