For the class−B output stage shown in Figure P8.24, the bias voltages are
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Microelectronics: Circuit Analysis and Design
- 2. a) Design a 9v DC oscillator circuit that produces a frequency of 500 Hz. The circuit may use a 555 timer or two transistor design(s). Show all calculations including the DC currents and bias voltages. Include the schematic and the required frequency formula(s). b) As a bonus, if a larger load were required to be connected to the chip, how would the schematic look and what components would be used to do design it? Also, as a theoretical approximation, if the 9v battery had a rating of 4 amp-hours, how long would it last powering this circuit? Show calculations to illustrate how you arrived at the answer.arrow_forwardThe ac equivalent circuit for an amplifier is shown. Assume the capacitors have infinite value, RI =750Ω, RB =100 kΩ, RC =100 kΩ, and R3 =100 kΩ. Calculate the input resistance and output resistance for the amplifier if the BJT Q-point is (75 μA, 10 V). Assume βo =100 and VA =75 V.arrow_forwardDesign a Single-Stage Common Emitter Class A Amplifier Specifications:Voltage Divider Bias Circuit Supply: Any value from 10Vdc to 24VdcLoad: 1kΩVoltage Gain: Any value from 80 to 400Lower Cutoff Frequency: 100 HzSinusoidal source (zero internal resistance): 50mVp-pTransistor: Si, β = 75 • Base-Collector capacitance = 8pF • Base-Emitter Capacitance = 25pF a) compute for the biasing resistances.b) determine the dc transistor terminal voltages and transistor currents.arrow_forward
- The ac equivalent circuit for an amplifier is shown . Assume the capacitors have infinite value, RI = 750 Ω, RB = 100 kΩ, RC = 62 kΩ, and R3 = 100 kΩ. Calculate the voltage gain and input resistance for the amplifier if the BJT Q-point is (40μA, 10 V). Assume βo = 100 and VA = 75V.arrow_forward8. Describe what are the components that has been employed, and their specific role for the provided problem below.arrow_forwardEx. 1780. A closed-loop system has sustained oscillations (i.e. constant amplitude) with a period of 85 seconds when the gains are: proportional=96, integral=0, and derivative=0. Determine the ideal- PID gains Kp, Ki (minutes^-1), Kd (minutes) using the Ziegler-Nichols method. Also determine the standard-PID values which are commonly used in industry, such as LabVIEW: Kc, Ti (min), Td (min). ans:6arrow_forward
- The ac equivalent circuit for an amplifier is shown . Assume the capacitors have infinite value, RI = 10 kΩ, RG = 1 MΩ, RD = 3.9 kΩ, and R3 = 33 kΩ. Calculate the voltage gain for the amplifier if the MOSFET Q-pointis (2 mA, 7.5 V). Assume Kn = 1 mA/V2 and λ = 0.015 V−1.arrow_forwardWhen the ltspice simulation of the circuit shown in the figure is performed, the output voltage (Vout) is obtained as given in which of the figures below? NOTE-1: Vcc = 12 V, RC = 2.2 kΩ, RB = 15 kΩ, RE = 180 Ω and C1 = 1 μF. NOTE-2: For the input voltage Vin, the DC offset voltage is 1.6 V, while the applied sinusoidal signal has a amplitude of 10 mV and a frequency of 10 kHz.arrow_forwardA phase modulator has a phase deviation constant Kp = 35 degrees/V. The carrier signal is ec = 8cos2(pi)(800k)t, volts and the modulating signal is em = 5sin2(pi)(2000)t, volts. a. What is the equation of the PM signal? b. What is the maximum phase deviation? c. What is the amount of deviation in the carrier phase angle at t = 160 micro-s?arrow_forward
- The ac equivalent circuit for an amplifier is shown . Assume the capacitors have infinite value, RI = 10 kΩ, RB = 5 MΩ, RC = 1.5 MΩ, and R3 = 3.3 MΩ. Calculate the input resistance and output resistance for the amplifier if the BJT Q-point is (2 μA, 2 V). Assume βo = 40 and VA = 50 V.arrow_forwardQ 3 Bring out the advantages and disadvantages of microwave tube devices andsemiconductor devices.What are the most common types of microwave diodes and transistors in use give theirbasic features features and applications?What are the most common types of microwave ICs? Give details of the circuit elementsand applicationsarrow_forwardConsider the following circuit. Calculate the output voltage when VGS=0 and VGS=-10V. Also, calculate the on-off ratio.arrow_forward
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