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A transistor amplifier stage comprises a transistor of parameters hie = 800 Ω, hfe = 50 and hoe = 20 μS, and bias components and coupling capacitors of negligible effect. The input signal consists of an e.m.f. of 60 mV from a source of internal resistance 2.2 kΩ, and the total load on the stage output is 4 kΩ. Determine the current, voltage and power gains of the amplifier stage.
1. Two students are discussing how programmable thermostats work. Student A says that a piece of material within the thermostat changes length depending on moisture content of the air and that temperature is related to this change in moisture.
What is the rate at which the electric field between the plates is changing?
The voltage of a resistor is calculate by the Ohm`s Law: V = R I. write a program that will input resistance R, current I for several resistors, and will calculate and display the voltage for each resistor.
An LED with a rated range of VF = 1.4 V to 1.8 V at IF = 20 mA is connected to a driver circuit with a peak output of 14V. What value of current-limiting resistor would be needed to limit the LED current to a maximum value of 20 mA
(d) Use the colon operator to create a matrix D by extracting the first through third columns of matrix A. (e) Create a matrix F by extracting the values in columns 2, 3, and 4 and combining them into a single column matrix. (f) Create a matrix G tha..
A current density J¯ = ˆy sin(2x) A/m^2 is subject to a z-directed magnetic field H¯ = ˆz10 A/m. a. Assuming the vacuum permeability (i.e. a non-magnetic medium), what is the magnetic flux
An Amplifier hasa low pass STC frequency response. the magnitude of the gain is 20dB at dc and 0dB at 100KHz. What is the Corner frequency At what frequency is the gain 19dB At what frequency is the phase -6degrees
Design a second-order band-pass IIR filter with center frequency of 200 Hz when the sampling frequency is 1000 Hz. In order to ensure the filter stability set the poles at 0.94 radial distant from the origin
An 8-pole, 3-phase alternator is coupled to a prime mover running at 750 r.p.m. It supplies an induction motor, which has a full load speed of 950 r.p.m. Find the number of poles.
R3 connects to point N in the center with current going upward and R1 is to the left of this at the top and then it down to V1, with the current going from R1 to V1. To the right you have R2 across from point N and then V2 is down from this. The c..
Describe the operation of the series RC circuit. The discussion must address phase angle relationships of current and voltage. The answer must include the effect of source frequency on the voltage drops across the resistor and the capacitor at ver..
how does the D'Arsonval movement work with voltmeter and ammeter i know how to design the cicuits but a little more of how the movement actually work in both cases. like for the ammeter the reason the resistor is place in parallel is to limit the ..
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