We have taken a laptop adater for testing using DTM-1.
Specifications are as below –
Input – 100-240 Volts 1.5A
Output – 19Volts 3.42A
We have made the testing specifications as below –
In the software we have set the limits according to the requirements as below –
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Setup is as below – |
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We have connected a laptop as load. |
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Main Page (AC+DC+THD) This page shows AC- Voltage, Current, Watt and current THD % in first column. Second column shows DC Voltage, Current, Watt and Efficiency. We have see here that efficiency of this laptop adapter is 90.77% whereas Current THD is 35.27%. |
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This page shows AC parameters. On first column it shows voltage, current, watt and frequency. Second column shows Vthd%, Athd% and NET THD. |
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This page shows DC Voltage, Current, Watt and Efficiency. |
below file contains production data for laptop adapter saved in the pendrive.
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TMSQC001.CSVWe have also done data logging in pendrive to see variation with time. below is the datalogging file with 1 minute datalogging period.