14 W Incandescent Bulb

We are testing a 14 Watt Incandescent Bulb at  220 Volts Mains AC input. We are using Embuilt  SPEA-1 to test the Bulb properties. Incandescent Bulb
Specifications : 230 Volts, 14 Watt

Main page of SPEA-1 for 14 Watt Incandescent Bulb Testing

When power is on the following results are found –

Vrms- 221.3 Volts VTHD% -2.7%
Arms -63.58mA ATHD% -2.8%
Watt -14.07Watt V3rd Harmonics Value – 4.921 Volts

Here we can see that VTHD is 2.7% which means Input Supply has 2.7% distortion in Voltage.

ATHD % is 2.8%. Here question is if bulb is resistive so why there is Amps THD.

Answer is ATHD is sum of VTHD and Distortion caused by load. So NET THD is 0.1%.  

3rd harmonics of Voltage is 6.329 Volts. 

Voltage Harmonics in % for 14 Watt Incandescent Bulb by SPEA-1

Here we can see the 3rd harmnonics of voltage in % of first harmonics. 3rd Voltage harmonics is 2.1% of Vrms Harmonics. 

Here we note that ideally first harmonics is to be equal of Vrms and other order harmonics are to 0.

3rd Harmonics Value of Current by SPEA-1

Here we can see the 3rd harmonics Value of Amps. It is 0.985mA.

3rd Harmonics % of current for 14 W Incandescent Bulb by SPEA-1

In the above image 3rd Harmonics of Amps shows in display 6. It is 1.6% of Arms (63.77mA).

Other parameters can also seen on SPEA-1.

You can also view readings on the SPEA-1 Software.

Software page for testing of 14 W Incandescent Bulb

Softare is connected to SPEA-1 for real time data viewing and reporting.

Voltage Harmonics Spectrum of 14 W Incandescent Bulb by SPEA-1 Software

Above is the voltage harmonics spectrum. All values are given in % of Vrms.

Current Harmonics Spectrum for 14 W Incandescent Bulb by SPEA-1 Software

Above is the Amps(Current) harmonics spectrum . All values are given in % of Arms.

Harmonics report is also generated which contains the parameter valuews with Harmonics spectrum.

Click here to download the harmonics report .

 Download Harmonics Spectrum Report of 14 W Incandescent  bulb

Click here to download the Harmonics Report.

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(Updated: December 10, 2018)