Given below are a few ideas for your projects: 1. Design of a regulated DC power

Question

Given below are a few ideas for your projects:

1. Design of a regulated DC power supply (choose from 5V, 12V, 15 Vor higher).
2. Design of a higher order filter circuit (choose from low pass orhigh pass) with response plots.
3. Design of an op-amp based power amplifier.
4. Design of Motor speed/rotational direction control circuits.

You may choose to describe any one of these or describe your ownproject idea and write a report about it. Single page reports areOK. DO NOT exceed more than 2 pages.The report should include thecomponents used (with numerical values), the theory behind it,thecircuit diagram, the circuit/physical equations involved,associated graphs or plots,and applications in particular.

Explanation / Answer

A Variable DC Power Supply is one of the most useful tools onthe electronics hobbyist's workbench. This circuit is not anabsolute novelty, but it is simple, reliable, "rugged" andshort-proof, featuring variable voltage up to 24V and variablecurrent limiting up to 2A. Well suited to supply the circuits shownin this website. You can adapt it to your own requirements asexplained in the notes below.

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