Questions tagged [energy]
Energy is defined as the amount of work that can be performed by a force, measured in joules (J). Energy is power integrated over time; power (W) is energy per second (J/s). This is a poor tag to use. Please consider if your question relates to energy as defined in physics; don't use it as a synonym for power or capacity.
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Is it possible to quantify electric power consumption on a fuse?
If you have a common fuse, is there way quantify the power consumption which is flowing through this fuse, or could you replace the fuse with something that measures the power consumption but still ...
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Why is it so problematic to have close to zero standby power consumption?
Each electronic device consumes electric power when it is "idle" unless it has a mechanical switch. I can understand that for example a TV with a remote control needs to "be ready" to receive a ...
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Lightning bolt vs. batteries: a coulomb in everyday terms
I am trying to decide if the information on the wikipedia page
http://en.wikipedia.org/wiki/Coulomb#In_everyday_terms
is reasonable. In particular the statements that a lightning bolt has about 15 ...
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Maximum power out of a piezo?
How do you extract the maximum amount of energy from a piezoelectric element? (For energy harvesting purposes.)
The maximum power theorem would seem to say that you need to load it with a ...
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how do energy consumption (Ah, kWh) meters work?
How do devices which measure energy consumed work? For example the ones in solar regulators/chargers which display how many Ah went into the battery and how many went out?
Do they just measure the ...
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What's the highest theoretical energy density for a chemical battery?
This is more a physics/chemistry/nanotech question, but what's the theoretical best energy density you could get out of a chemical battery (or fuel cell), if you could arrange atoms in any manner you ...
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Alternative Energy Storage
Can anyone suggest an alternative to energy from a battery?
I'd like a system to replace my deep cycle leisure battery, I currently use this 110 AH leisure battery with a 1200W inverter.
I run my ...
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In theory, is it possible to make a logic gate that uses zero current?
CMOS greatly reduces the current draw of ICs because one of the complementary FETs is always in the non-conducting mode, so there is only a flow of current during the transition between states, which ...
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PIC voltage measurement
I am running a battery powered device, and would like my microcontroller (PIC) to report on the supply voltage.
This is so I can determine how many batteries is used in the supply, and also the state ...
Kheng