Engineering College

D *4.80 It is required to use a peak rectifier to design a dc power supply that provides an average dc output voltage of 12 V on which a maximum of ±1-V ripple is allowed. The rectifier feeds a load of 200. The rectifier is fed from the line voltage (120 V rms, 60 Hz) through a transformer. The diodes available have 0.7-V drop when conducting. If the designer opts for the half-wave circuit: (a) Specify the rms voltage that must appear across the transformer secondary. (b) Find the required value of the filter capacitor. (c) Find the maximum reverse voltage that will appear across the diode, and specify the PIV rating of the diode. (d) Calculate the average current through the diode during conduction. (e) Calculate the peak diode current.

Answers

Answer 1
Final answer:

Designing a DC power supply with a half-wave rectifier involves calculating the necessary transformer secondary RMS voltage, filter capacitor value, diode's peak inverse voltage, and average and peak diode currents considering the specific design requirements like output voltage and ripple.

Explanation:

The question relates to designing a DC power supply using a half-wave rectifier, including calculations for transformer secondary voltage, filter capacitor value, peak inverse voltage (PIV), and diode current parameters. Solving such a design problem involves understanding and applying principles of electrical engineering, particularly those regarding rectification, filtering, and electrical power supply designs.

To calculate the RMS voltage required across the transformer secondary, one must consider the average output voltage required, the diode forward voltage drop, and the peak-to-peak voltage required to maintain the ripple within the specified limits.The filter capacitor value is crucial to minimize ripple and can be determined based on the allowable ripple voltage, load resistance, and the frequency of the rectified output.The PIV rating of the diode is determined by considering the maximum reverse voltage that the diode can withstand during operation, which is affected by the transformer's secondary RMS voltage and the rectifier configuration.Calculating the average and peak diode current involves understanding the load requirements and the electrical characteristics of the diode and the circuit.

Related Questions

Select the correct verb form to complete each of the following sentences.Members of the committee ____ issued a mobile phone and one roll of stamps. Neither the CEO nor the CFO _____any recollection of the illegal funds transfer. Mr. Adams and his assistant______ planning to attend the annual technology showcase. The finance committee _______planning their vacations around the annual June meeting.Everything in my home office _____ to stop functioning when I need it the most.

Answers

The correct verb forms to complete the given sentences are:

Members of the committee issued a mobile phone and one roll of stamps.

Neither the CEO nor the CFO has any recollection of the illegal funds transfer.

Mr. Adams and his assistant are planning to attend the annual technology showcase.

The finance committee is planning their vacations around the annual June meeting.

Everything in my home office seems to stop functioning when I need it the most.

In the first sentence, the verb "issued" is correct because it is in the past tense and agrees with the subject of the sentence, "Members of the committee."

In the second sentence, the verb "has" is correct because it is in the present tense and agrees with the subject of the sentence, "Neither the CEO nor the CFO." The verb "has" is also used when the subject is a singular noun that refers to two or more people or things joined by "neither" or "nor."

In the third sentence, the verb "are" is correct because it is in the present tense and agrees with the subject of the sentence, "Mr. Adams and his assistant." The verb "are" is also used when the subject is a plural noun.

In the fourth sentence, the verb "is" is correct because it is in the present tense and agrees with the subject of the sentence, "The finance committee." The verb "is" is also used when the subject is a singular noun that refers to a group of people or things.

In the fifth sentence, the verb "seems" is correct because it is in the present tense and agrees with the subject of the sentence, "Everything in my home office." The verb "seems" is also used to express an opinion or belief.

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