All Questions
Tagged with power-consumption watts
14
questions
0
votes
0
answers
71
views
Calculating watt usage from an input/output electronics spec for step-down transformer's minimum watt limit
I'm trying to calculate the minimum watt limit needed for a step-down transformer that convert 220 V to 120V from source (220V) to 125V smart plug then to an electronic appliance with the following ...
- 101
0
votes
1
answer
96
views
How many devices consuming 6.5W peak can I connect to a 100VA transformer?
Our customer wants to know the number of devices that they can connect to a transformer rated at 100VA. Our devices consume 6.5W peak when the batteries are charging. Here is my calculation and please ...
- 111
-1
votes
1
answer
71
views
Energy consumption Calculation
I work for a food processing plant and working on a project that calculates energy consumption. Am having a hard time converting information given by the manufacture to calculate the average kWh. ...
1
vote
2
answers
893
views
Correct way to measure circuit power consumption before or after LDO
I have created a low power MCU project, and I want to measure the power consumption.
I am confused with:
a) the correct way to place the ammeter, before (picture A) or after (picture B) my voltage ...
- 21
0
votes
1
answer
2k
views
Real consumption of SMD5050 Led Strips
I'm building my home lights with an SMD5050 Led strips.
And I'm completely lost after comparing specs consumptions with real measured data.
So on, I have 5 stripes and 1-to-5 Splitter from my ...
1
vote
1
answer
484
views
How to calculate check practically POWER of SMPS required for desktop computer
How to calculate check practically POWER of SMPS required for desktop computers
I have 10 desktop pc in one PC i have a high end gaming gigabyte motherboard with AMD processor graphic card and ...
- 121
0
votes
1
answer
104
views
how do LED controllers work
I’m trying to find out if a device only draws the watts it needs to run or if it takes all available
For example
I have led light that’s says max 0,75 watts and the led controller says output 144 ...
0
votes
2
answers
126
views
confused about power rating for washing machine in datasheet
I am interested in purchasing a Primus washing machine but I get confused about the power rating that is recorded in the data sheet (link below). On page 2 of the data sheet, the manufacturer states ...
- 1
4
votes
4
answers
557
views
How to compute electric bill for a server netbook
I've taken an old netbook and started using it as a tiny game server. I have removed the screen, wifi card and reproductors, but the rest is there (battery, fan, sata HDD). It runs 24/7 and charger is ...
- 143
0
votes
2
answers
2k
views
Difference between watts and watt-sec [closed]
I want to know the difference between watt and watt-sec in the powe usage of the network devices. Is there any better approaches in considering the watts approach and watt-sec approach in the ...
- 11
2
votes
1
answer
14k
views
How much power does a wireless mouse use? [closed]
I have seen many answers online to how much power the USB dongle linked to a wireless mouse uses, but nothing about how much power the actual mouse draws from its batteries. What is a ball-park ...
- 237
4
votes
2
answers
3k
views
On Computing Power Consumption for a GSM system
I'm a software student trying to learn about embedded systems. I would like to
build a low-power system that can send his coordinates by SMS and also receive SMS. Unfortunately I'm at level zero in ...
- 293
2
votes
3
answers
72k
views
How to calculate power consumed by an electrical device in a specified amount of time?
Say for example I have a TV with "140 watts" marked on it. Does this mean the TV consumes 140W per minute? Per hour? Per day? How is the power consumed by device calculated from the device ...
- 175
1
vote
3
answers
49k
views
Interpreting the power rating of the refrigerator [closed]
My refrigerator is rated as 130W of power. I need to know how to interpret this. Does that mean if the compressor works for a whole hour then only it consumes 130W? Or is 130W the average power ...
- 131