Common mistakes Please don’t take offense if examples are taken from your report.

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Presentation transcript:

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.

Checklist

How things work Causes of power supply inefficiency Need to use rectifier and capacitor Need to match load impedance with power supply impedance Ripple voltage Frequency: 120 Hz Specified max level for 3630A power supply: < 350  Vrms, < 1.5 mVpp