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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Data collector: how much power will my system use (Linux vs. RTOS)?
This is about a data collection device. It mainly contains a Linux operating system, various data interfaces such as RS232/RS485/CAN/SDI-12/RJ45, etc., and a communication module for 4G and satellite ...
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Best way to calculate Energy used in a circuit
I'm trying to figure out how to calculate energy consumed through my circuit. I can read the current and see the voltage, can obviously calculate the instant power, but I'm fairly certain that I don't ...
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Can I use a power bank to power my laptop during a blackout? [closed]
I am wondering if it's possible to use my ThinkPad L430 laptop with a power bank as a power source during a blackout. The laptop's power consumption is between ~35 to ~42 watts. Its battery is always ...
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Typical efficiency of logical circuit outputs
When looking at "logic" circuits (gates, level shifters, ...), usually intrinsic current consumption is specified, and is often quite low (compared to maximal recommended output currents of ...
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How to limit power consumption to a certain value?
For the SAE Aerodesign competition, there is a requirement to create an electric RC airplane that does not exceed 750 W of power consumption at any time.
The electrical circuit consists of a 22.2 V (...
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How to define the stop mode command? (S08DZ96)
I am using MC9S08DZ96 microcontroller and I using CodeWarrior version 11. I want to put the MCU to sleep mode(STOP3). In the CPU settings, I have changed the sleep mode setting and the relevant ...
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How much power can a 6 nm transistor handle?
Modern semiconductors are manufactured with feature sizes measured in nanometers. For example, the EPYC 9654 CPU has 78840 million transistors. Each one is in 6 nm and has a TDP of 360 W. What is ...
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How do I calculate the required batteries and solar panels for my needs?
I am building my camper and want to know how to calculate exactly what batteries I need, and what solar panels to meet my needs.
Here is my list of the main and most powerful devices that I will use, ...
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What is the meaning of average current? How is it used in calculating battery life?
The average current is the total current consumption divided by the measured duration.
As per the above image, there are two average currents.
Case 1: 866.82 uA over 2 mins of windows (complete cycle)...
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A budget oscilloscope for power consumption measurements of PCB [closed]
I'm working on an IoT project based on BLE (2.4 GHz) and SoC: nRf52832, and at this point, I need to do some power consumption measurements.
After going through some previously built similar projects, ...
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Need help determining LED run time given a certain battery
I have struggled to determine if a single CR2032 battery is sufficient to run some LED lights for a long enough period to replace the 2 AAA recommended for a DIY build. I'd like to use CR2032 instead ...
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Why do power meters claim not to be usable for air conditioners? [closed]
As the title says, why do some power meters (especially the ones readily around where I live) claim that they cannot be used with air conditioners and a few more devices?
One typical such device can ...
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Is the output power of nRF24L01+ dependant on power supply level?
I'm making a low power sensor node using a nRF24L01+ module in always-TX mode, powered by 2xAAA batteries. Considering the minimum voltage of 2v when batteries are depleted, the device would still ...
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Durability of a battery
I have a device that consumes 10W and I have a 12V x 4.5Ah = 54Wh lead-acid battery, does that mean that my device can work continuously for 5.4 hours?
Does the same concept apply to lithium batteries?...
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The LED bulb in my room has written 9 kWh/1000h on the box; what does that mean? [closed]
I bought a LED bulb for my room which uses 8.2 W power = 60 W conventional. I know this means it's a 8.2 W LED bulb which gives a brightness equivalent to a 60 W incandescent bulb.
So here it says 9 ...
