Create a circuit diagram for a half-wave SCR rectifier with an input voltage of 30Vrms, load resistance of 75 ohms, and an SCR firing angle of 45 degrees. Calculate the average output voltage.

1. A six-pulse uncontrolled recti load. The inductance is very 1 (a) Determine average load o (b) Determine the maximum (c) Determine the maximum (d) Determine average loac (e) Carefully sketch the wav diode conduction pattern.

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.

Discuss the different types of protections available for a Silicon controlled rectifier (SCR). In what kind of situations is it required to connect a number of SCRs in parallel and series respectively?

The rectifier below is operating at a frequency of 60 Hz, and the RMS value of the transformer output voltage v, is 6.3 V. (a) What is the value of the dc output voltage Vo (the peak V.) if the diode voltage drop is 1 V? (b) What is the minimum value of C required to maintain the ripple voltage to less than 0.25 V if R = 0.50? (c) What is the required PIV rating of the diode in this circuit? (d) Sketch the output waveform labeling Vpeak (the dc value), Vripple, and sketch the general shape of the diode current Ip below the voltage waveform. + D1 R

b. Calculate the following about the circuit in the figure (If silicon diodes are employed in the rectification);i. the peak value of the output voltage considering the drop across each diode, Vpk.ii. the average voltage, Vdc. iii. The current through the load resistor, IL.iv. The current diode, Id.v. The frequency of the output signal, Fout.vi. Calculate the efficiency of the full wave rectifier expressed in percentage. vii. Sketch a graph of the input and output voltage against time.

A fully controlled, single-phase bridge rectifier is powered from an ideal 220V, 50Hz source. The rectifier is triggered with a trigger angle of 60 degrees and provides a smooth current of 50A to the load at the output. According to this: a) Draw the waveform of the output voltage in scale and calculate the average value of the output voltage. Combine the average voltage signal with the output voltage wave signal. Show on the same figure. b) Draw the waveforms of the thyristor currents, the gap diode current and the current drawn from the source in scale. c) Calculate the value of the filter inductance used at the output when the ripple in the load current is 3A. (Do the operations by showing the output voltage shapes and areas on the figure. The answers should be in the system and order in the solved examples.)

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A single phase diode bridge rectifier has an input voltage of 240V and supplies a resistive load with a constant dc current of 10A. (a) Sketch a well labeled circuit of the rectifier described above.(b) Sketch the waveforms for the input voltage, output voltage, input current and output current. (c) Determine the maximum input voltage. (d) Load resistance. (e) Derive an equation for the average output voltage and calculate its value. (f) Derive an equation for the RMS value of the output voltage and calculate its value. (g) Determine the power dissipated in the load

A silicon controlled rectifier (SCR) has a forward breakdown voltage of 230 V. When a gate current of 2 mA flows in the gate circuit. If a sinusoidal voltage of 400 V peak is applied, find the following: Firing angle. Average output voltage. Average current for a load resistance of 180 Ohms. Power output