WRITING THE PROCESS DESCRIPTION
The outline below shows the usual form of a description of a process that does not involve a person. This approach will work for all such descriptions. A process description, analyzed in some detail, follows the outline.
2. Definition of operation
3. Principles(s) of operation
4. Major sequences of operation
5. Body: Description of operation
6. Sequence A
7. End goal of sequence
8. Detailed description of action
9. Sequence B (same as A)
10. Conclusion (optional)
The introduction to a process description contains general information that prepares the reader for the specific details that will follow. In the introduction you define ~e process, explain its principles of operation (if necessary), and preview the major sequences. The following introduction performs all three tasks.
Body: Description of the Operation
In the body of the paper write one paragraph for each step of the process. Each paragraph should begin with a general statement about the end goal or main activity. Then the remainder of the paragraph explains in more detail the action’ necessary to achieve that goal. Notice in the following example how each paragraph starts with an overview a statement of purpose or end goal and how all the paragraphs are constructed in the settle pattern.
Transformation is the step in which the relatively large AC voltage (110 volts AC) is converted into a smaller AC voltage (12 volts AG). This conversion is done with a transformer, an electrical device with two parts: a primary coil and a secondary coil. The primary coil is basically several loops ct fine wire. The secondary coil is similar to the primary Coil, but it is thicker and has fewer loops. The large AC voltage (110
AC) flows into the primary coil of the transformer. When’ the AC passes through this coil, a magnetic field is produced, a phenomenon known as Faraday’s law. The magnetic field then passes through the secondary coil, producing a voltage in it (see Figure 3). The voltage produced in the secondary coil depends on the ratio of loops of wire between the coils with the correct number of loops in both the primary and secondary coils, the 110 volt AC converts into 12 volts AC.
Rectification is the step in which the small AC from the secondary coil of the transformer is converted into DC. This conversion done with an electronic component known as a diode A diode is like an electronic check valve; it only allows current to flow through it in one direction. When the AC (which by definition continually reverses in direction) is passed through a diode, only the top half (positive half) of the sinusoidal waveform is allowed to pass.through. The bottom. half (negative half) is absorbed by the diode The current leaving the diode.is traveling in only’ one direction and therefore fits the definition of DC. However. as you can see in.Figure 4. the DC leaving the diode ‘is quite “lumpy.” As a result. it is not very useful.
Conclusions to brief descriptions of operation are optional. At times writers follow the description with- a discussion of the advantages and disadvantages of the process, ‘or with a brief summary, If you have a written relatively brief well.