Common mistakes

Please don’t take offense if examples are taken from your

report.

1 mA but not: 1mA

10.5 V but not: 10.5V

60 kHz but not: 60KHz

Judgment words

If the device is outputting no power but is drawing power from the socket, then its power efficiency is 0% and it is a horrible device.

The results show that the efficiency of the power supply increases with the current through the load, but still remains very poor even at the maximum rated current.

The power supply showed poor power efficiency.

ChecklistProject evaluation checklist

Common mistakesFormat and structure Technical issues

c poor or confusing wording c missing units in textc unreadable figure c improper unitsc improper capitalization c no units in tablec use of fluff words or phrases (e.g., in order) c no units in graphc poor scale choice in graph c missing axis labels in graphc too many significant figures shown c missing table column or row headingc unsubstantiated conclusion c missing units in table column or row headingc inconsistent terminology c missing scales on graphc missing sequential numbering of equations c incorrect units in tablec missing sequential numbering of figures c incorrect units in graphc missing sequential numbering of tables c incorrect equationc missing figure caption c missing equationc missing table caption c incomplete description of instrument settingsc improper caption placement c unspecified measurement processc unnecessary use of legend in graph c ambiguous data presentation (e.g., measured vs. simulated)c improper font used c incorrect diagramc improper font size used c ambiguous diagramc inconsistent formatting c improper axis placementc uncited use of another's figure, data, words, etc. c inconsistent use of variable symbolsc incorrect margins c incorrect technical descriptionc incorrect line spacing c improper test setup

c unreadable or difficult to read figure or graphSpelling and grammar c incomplete or incorrect instrument description

c undefined acronyms c incomplete data presentation (data collected but not reported)c misspelled wordsc improper word choice Coverage issuesc grammatically incorrect word usage c incomplete reportc improper use of plural or singular wording c missing or incomplete introductionc use of judgment words (good, poor, fair, etc.) c missing or incomplete methodologyc use of subjective modifiers (e.g., very) c missing or incomplete resultsc use of imprecise or undefined wording c missing or incomplete conclusions

c missing or incomplete recommendations

How things work

Causes of power supply inefficiencyNeed to use rectifier and capacitor

Need to match load impedance with power supply impedance

Ripple voltageFrequency: 120 Hz

Specified max level for 3630A power supply: < 350 Vrms, < 1.5 mVpp