Questions tagged [power-consumption]
Power consumption is the actual energy demand made on an existing power supply (e.g. battery). Consumption of electric energy is measured in joule (J), but for practicality often watt-hours (Wh) are used.
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Resistor losses in heat
I am trying to understand the power lost via heat (friction) from a resistor as opposed to what flows through and is available for the next component in series, and how I estimate this.
I have read a ...
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Arduino board consumption benchmark
I know consumption depend of the type of application, but I would like to know if a comparison of average consumption exist between arduino and similar boards (Teeny/Dfrduino...).
The board I am ...
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Help me understand the calculation of the current consummated by LM7805
Please help me understand how to calculate the current consummated by LM7805 during its work.
Parameters:
V(in) = 12V
V(out) = 5V
I(load) = 10mA (0.01A)
The image ...
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ATMega32u4 power consumption with CLKDIV8
I have a little board with an ATMega32u4, that's run straight off USB voltage. There are no peripherals on board that should draw power (no LDOs or anything, LED is off).
It has a 16MHz crystal.
The ...
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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 ...
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how to read power labels on home appliances?
I want to know how to read the power label of a home appliance in order to estimate energy cost.
I have provided a picture of an example power label
What i understand from the provided label is I use ...
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ESP32 bootstrap pins power consumption
The other day, I tried that connect to GPIO15 and GPIO5 GND with 26.7 kohm pull down resistor despite having a internal pull-up beacuse of IO obligation. I had no problems during a booting.
Please ...
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How do I compute the power consumption of an audio amplifier?
I intend to use this audio amplifier in my project : PAM8019
It has two analog inputs : left channel and right channel. It has two analog ouputs, which are the amplified inputs.
Let's say I follow the ...
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Gasoline generator + Peltier configuration
I have a DIY cooler box with Peltier element 12V/3A/27 watts and want to connect via power supply to gasoline generator with output 600W at 5A max.
Would that be a problem and not supply my Peltier ...
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Does an amplifier consume any power when nothing is connected? (GPD2846A built-in 2W amplifier) [closed]
The GPD2846A module has a built-in amplifier into it. However, I want to use it with my headphones which don't require 1-2W (they are definitely going to distort sound and possibly be damaged). So I ...
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VL53L3CX XSHUT PIN PROBLEM IN DEEP SLEEP
I have project using a VL53L3CX distance sensor. Also , I control it by ESP32. In normally, I can command to XSHUT pin. And I can read xshut pin of ESP32 that is 3V3 or 0V.
But, When ESP32 enters deep-...
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How is power consumed by an induction motor calculated based on speed (from a VFD) and torque induced by the rotor shaft?
I've been tasked with carrying out some design improvements on my company's production floor.
There is a flat belt conveyor assembly line, whose movement forward movement is controlled by a single ...
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For a mathematical operation in CPU, could power consumption depend on the operands?
Obviously, the number of operations affect a CPU's power consumption, but does it solely depend on the operations themselves? For example, adding 0 and 1 involves setting one single bit, but adding ...
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How does this LED last this long?
Before the end of last year, dad asked me for some small red light for his cabin, to pretend there is an alarm activated. He wanted it battery powered, so it can glow when electricity is turned off.
I ...
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STM32F030 High current in stop mode
I would like to put STM32F030K6T6 into STOP mode (low power mode), in which there should be current consumption around 5 μA.
But whatever I do the current consumption is around 450 μA in stop mode.
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