All Questions
Tagged with energy power-supply
23
questions
0
votes
1
answer
104
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Energy reservoir capacitor
How to calculate the appriopriate capacitance for an energy reservoir capacitor that would serve as an alternative IC power supply in case of main power supply failure. Is there a specific formula or ...
- 89
1
vote
1
answer
83
views
Electric potential - 2 power supplies
I'm studying among other things electrical engineering and I'm kind of in a discussion with a colleague about an 'experiment': he claims that when i measure the voltage between the + output of power ...
- 149
0
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0
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44
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What is the technical parameter details of Genus Bidirectional microcontroller based ABT Energy meter ( 3Ph 4 wire)? Please someone help me out
I am unable to figure out the different parameters of Genus Bidirectional ABT Energy meter. I am working for the installation of SEM meters for the feeders in substation. I know about the energy ...
0
votes
0
answers
762
views
How to calculate energy from power I receive every 5 minutes
I have to calculate energy from power measurements, which I receive every 5 minutes. The values are summed and assigned to measurements, then monthly measurements and finally yearly measurements. ...
0
votes
1
answer
72
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What is the average energy loss if a booster connected to power source but without a load?
I have lipo battery 4.2V 3000mAh,
booster simulation ti power bench TPS55340QRTERQ1 ‑ 2.8V-4.2V to 8.00V @ 1.5A
Vin 2.8V - 4.2V
Vout 8v
Iout 1.5A
simulation details
efficiency 84%
1.43Mhz
duty 65%...
- 194
0
votes
1
answer
31
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Peak Period Forecasting in electric grid
I am currently working on the day ahead load forecasting using a regression model over a microgrid level.
I wanted to know is there a way I can detect peak period i.e period where demand is high from ...
- 123
1
vote
2
answers
94
views
Do "standby switches" consume energy?
Suppose I have a TV plugged in and it is connected to a power outlet which is also turned on. This appliance is "turned on" and on "stand by mode". It consumes energy I think just to light up that ...
- 111
1
vote
1
answer
6k
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Power supply architecture for energy metering IC (HLW8012)
HLW8012 datasheet (mostly Chinese)
Website with english info
I am developing a product which requires energy measurement of two different phases. I am planning to use HLW8012 energy metering IC ...
- 8,361
0
votes
1
answer
2k
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low efficiency in mobile phone charger [duplicate]
Looking at my phone charger:
Model LG MCS-02EP
Input 100-240 V, 50-60 Hz, 0.2A
Output: 5.0 V 0.85 A
That means input power from 20W to 48W and output 4.25 W. Thus, an efficiency in ...
- 593
1
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0
answers
2k
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Detecting AC power flow direction [closed]
I'm willing to design an AC power meter, which can measure power from a solar inverter to the utility grid and vice versa. I am using a grid-tied solar inverter to supply the load. This meter should ...
3
votes
1
answer
84
views
Generating a current with ionized water droplets (in a cloud)
Playing mind games with myself tonight; I know some of the windiest spots in the world are at the tops of mountains and often socked in the clouds. To measure meteorological phenomena at these ...
- 133
0
votes
2
answers
72
views
How do current and voltage relate in a power supply in extreme conditions?
Theoretical question:
Say you have a power generator that can supply 1W at 100V DC.
If you connect a 10k Ohm resistor, exactly 0.01 A is going to flow across the resistor.
If you connect a 1 Ohm ...
- 1,080
1
vote
2
answers
635
views
is one "bigger" psu more efficient than two small?
I'm going to replace my router and network switch, and question is if both devices comes for example with 5v 1a power supply, is it good idea to buy one 5v 2a power supply and connect both devices? I ...
-2
votes
1
answer
746
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How to calculate the energy consumption of a liner sensor array?
I'm trying to determine the energy consumption of a device in kilowatts, but I'm having trouble because the datasheet provided only gives me estimated voltage and not amps.
DATASHEET: http://pdf....
0
votes
2
answers
1k
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How do I calculate the energy (kWh) consumed by my 5V smartphone charger?
I'm having a little trouble in figuring out how much power is absorbed by my 5v smartphone charger. I'm curious as to how to account the energy loss due to stepdown.
- 187