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Sanath Embedded
Joined: 23 Jan 2009
Posts: 50
Helped: 1
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 07 Nov 2009 8:02 80W Power Measurement in Multimeter |
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Hi Guys,
From the 400v DC, 80W o/p source I want to measure the power whether it provides the accurate 80W. How can I test it. is it possible with multimeter or any other technique.
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hameeds01
Joined: 23 Aug 2005
Posts: 285
Helped: 11
Location: NUST Islamabad
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07 Nov 2009 9:57 Re: 80W Power Measurement in Multimeter |
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yes u can do it via multimeter,
Power = volt x current
put a load of 0.2 Amps on the source & read the voltage across the load
e.g
power = 0.2 x 400
power = 80w
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07 Nov 2009 9:57 Ads |
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Sanath Embedded
Joined: 23 Jan 2009
Posts: 50
Helped: 1
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07 Nov 2009 10:28 80W Power Measurement in Multimeter |
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| What load of 0.2 Amps I have to connect
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vipinsaini
Joined: 24 Aug 2009
Posts: 19
Location: DELHI(INDIA)
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07 Nov 2009 11:55 Re: 80W Power Measurement in Multimeter |
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Dear if u don't have any load of 0.2A then u can connect a resistance of 2kohm at the output side for the purpose of 0.2A load.
But resistance should not be less than of 80W.
Thnaks & Regards
Er.VIPIN SAINI
DELHI(INDIA)
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hameeds01
Joined: 23 Aug 2005
Posts: 285
Helped: 11
Location: NUST Islamabad
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07 Nov 2009 16:18 Re: 80W Power Measurement in Multimeter |
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P = V x I
P = V² x R
R = V² / p
= 400² / 80
R = 2kΩ
Use R = 2kΩ , 80w ++
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