2. Draw the circuit diagram of linear voltage regulator for fixed output voltage using IC78xx and IC79xx. Describe its principle of operation at input voltage. increasing

IDSS=8mA , VP =-4VTo help plot the DC load line VGS=VG-IDRSa)Attach a Plot of JFET Characteristic Curve as shown in Figureb)What is the approximate VGSQ?c)What is the approximate IDQ in mA?d)Determine source voltage VS.e)Calculate the drain voltage VD.f)Calculate the drain-to-source voltage VDS.

An ac LVDT has the following data; input 6.3V, output 5.2V, range ±0.50 cm. Determine: a) Plot of output voltage versus core position for a core movement going from +0.45cm to -0.03cm? b) The output voltage when the core is -0.35cm from the center? c) The core movement from center when the output voltage is -3V? d) The plot of core position versus output voltages varying from +4V to -2.5V.

Design a voltage regulator circuit to supply a constant voltage of (10 V) across a resistive load of (10 ). The minimum Zener current is (50 mA) and maximum current is (800 mA). AssumeRs=10 andFind:- 1- the maximum and minimum source voltage. 2- at the maximum source voltage, find the minimum load resistance. 3- at the minimum source voltage, find the maximum load resistance. 4- minimum and maximum power dissipated in the Zener diode.

Q2) Design a Bridge FWR to supply a load of (1002) with the waveform shown in figure from the main power supply of (220 Vrms). Find: - 1- The transformer turns ratio (a). 2- The ripple voltage. Vot Vm = 12 V 3- The Vde value. 4- The RMS value of the output voltage. 5- The ripple factor. 6- The value of capacitor filter. Vip = 0.1 V (assume ideal diodes) T=0.01 sec. tisec) Q3) V in Design a regulated circuit to supply a constant voltage of (10 V) across a resistive load of (50 2). The input voltage is shown in the figure. The minimum current for the Zener diode operation is (Izk=5mA). Find the 15 V 15 maximum power dissipated in the Zener diode. 12.5 12 V 10

A three phase fullwave controlled rectifier has an input voltage which is 480vrmsat 60hz. the load modelled as a series resistance and inductance with R=10ohm and l=50mH. determine the delay angle to produce an average of 50ain the load.

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…

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1. Calculate the theoretical output DC voltage of the half-wave rectifier circuit and compare it with measured value. For the capacitive filter, obtain the theoretical values of the DC output voltage and the ripple voltage and compare these values with the measured quantities. Determine also the practical and theoretical values of the ripple factor. 2. Calculate the theoretical output DC voltage of the center-tapped full-wave rectifier circuit and compare it with measured value. For the capacitive filter, obtain the theoretical values of the DC output voltage and the ripple voltage and compare these values with the measured quantities. Determine also the practical and theoretical values of the ripple factor. 3. Repeat the calculations for the full-wave bridge rectifier and filter circuit. 4. Determine the peak inverse voltage (PIV) on each diode in the three rectifier circuits. 5. If diode D4 in the bridge rectifier circuit of Figure 5 was removed or burned, explain the operation of…

a-Draw the cct Q1/(A) For the waveforms of s phase angle control Ac-Ac converter: - diagram and complete other waveforms. b- Derive the equation of V Mean and V Effective. c-If a л/6 compute the i/p P.F, average i/p current and o/p in this cct. (15M). Q1(B) Prove that the single phase half wave rectifier with load inductive that:- vdc= Vmax 2π [1+cos(+0)] (10M) Q2/(A) Design parallel inverter to generate square wave with frequency 400 Hz to supply resistive load 120 2,240 v, if the battery voltage 12. (15M) Q2/(B)What are the meaning of the following: - [choose five only] (10M) 1-PWM 2- Combined inverter 3-UPS 4- Triac. 5- Smart technology device 6-Switching mode regulator 7-Throsold v. Q3/(A) Three phase F.W.R is operated from a star connection 208v,60 Hz supply, RL=1002, this rectifier must supply a load of 40 2 at half its max. O/P v. Find: -1- Firing angle. 2-r.m. s and average o/p current 3- o/p frequency. 4- if the firing angle smaller than 60° 5-Draw the waveforms for all…