CircuitLab_Fall2023

A buck-boost converter operates with an input battery. It converts +12 V to –12 V at apower level of about 75 W. the switching frequency is 120 kHz. The switches have200 ns switching time. The battery has an internal series resistance of 0.2  and seriesinductance of 200 nH. (a) What is the operating value of the duty ratio? What power is lost in the battery resistance? (b) Propose an interface structure to improve operation and decrease losses. What are the duty ratio and battery         resistance loss with your interface in place?

3) Explain the construction, principle of operation, circuit and applications of Variable reluctance transducer with neat diagrams. 4) Describe the construction of LVDT and explain its principle of operation with the aid of diagram, list the advantages, disadvantages and applications of LVDT.

1. The DC-DC converter has several circuit configurations. a) (Draw a simple connection of IGBT switch, diode and inductor that can discriminate between Buck, Boost and Buck-Boost converter circuits respectively.) b) ('A Boost converter produces an output voltage, Vo that is more than or equal to the input voltage, Vi. Based on this statement develop the equation for the relationship between Vo Viand D. where D represents the duty ratio. You can use any suitable diagram to illustrate your answer.)

Análisis de rectificador onda completa Consider the capacitor-filter rectifier circuit as shown in Figure 1. The input is a single-phase source that is derived from a 220 Vrms mains. Tasks for analysis: (a) Rig up the circuit as shown in Figure land plot V andi versus time. (b) Why is there ringing on the current wave-form? (c) What is the series impedance of the circuitệ (d) Plot V and V. versus time. What is the ripple? How does ripple depend on load, capacitor C; and frequency of input wave-form? (e) Measure the current and voltage waveform across the rectifier diode. (f) Estimate the average and ms currents through the rectifier diode, Calculate the diode power dissipation. (g) What should be the peak current rating of the diode? (h) Change the initial charge voltage on the capacitor Cr. What is the effect on the input surge current? (i) Change the phase angle of the input V, at start up. Observe the effect on current i. What happens and why? 1) Under whaf conditions do you get…

Given the circuit diagram:a. Derive the state equation b. Map for the outputs c. Derive the transition table d. Derive the flow table

8- Auto transformer is used in tuned amplifier to (transform low impedance of transistor input, match to the load, tune to operating frequency, stabilize tuned amplifier). 9- The dual slope A/D converter is popular because it is (fast converter, low power, low complexity, high resolution). 10- The most important feature of flash type A/D converter is (high resolution, fast, low component spread, low power dissipation).

4. Please I want a solution of this question with all details. Many Thanks Note: It is preferable to solve by typing.

What is the significance of commutation in power electronic systems? Explain the operation of a commutation circuit in a thyristor-based converter.

Design an op-amp circuit that can perform this operation: Vo = 2V1V2 – 3V3. Marking Scheme: 1. Circuit Diagram 2. Calculation with Assumptions

transformer ac line 120 V (ms) 60 Hz Diode rectifier Voltage regulator Filter Load Block diagram of the rectifier circuit is given above. Create a block diagram for audio amplifier system with at least 5 blocks (Add physical equivalent of the input and output). Indicate all the input and output signals and voltage levels approximately on the diagram. Explain briefly the design steps of the audio amplifier with your own words. Comment about the most critical parts to be considered in designing process.