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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DDR4 Refresh VPP Power Consumption
My question may seem stupid but for a REFRESH operation on a single-rank DDR4 with multiple DRAM devices, how to properly estimate the DRAM power consumption ?
I tried to use Micron Power Calculator ...
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Energy of small E-Paper display modules
Has anyone used small 2"- 4" epaper modules similar to these, and measured the actual energy consumption of them?
e.g. in J/erase/write or J per 1/4 rewrite.
Have you compared the power crossover ...
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SAM-D21 Clock On Demand does not wake up the MCU from Standby
I am using SAMD21 with FreeRTOS. I am putting the system on sleep level Standby and relying on a TC that works as a systick for the tickless FreeRtos to wake up the MCU however, when the debugger isn'...
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Bluetooth low energy: effect of slave latency on power consumption
Slave latency is meant to allow a bluetooth le slave to skip a certain number of connection intervals before actually establishing a connection event with the master. In principal, this seems like it ...
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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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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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Should I include Ivdd for total current consumption calculation?
I'm looking at the STM8L101K3T6 microcontroller for a timer and would like to calculate the average current consumption. It will stay active for only 5% of the time while it sleeps for the other 95% ...
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Calculating battery life considering the capacity drops depending on load current (2 x 4 AA-packs in parallel)
This is a very recurrent question, about calculating the battery life given certain circuit current usage.
This example will be similiar to this one in terms of the battery used and the consideration ...
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Can someone explain the unusually high minimum supply current of ESP32-WROOM-32E?
I had chosen the FireBeetle 2 ESP32-E board for a future project. I started looking at the power consumption details and I came across this posting. It's about some mysterious startup current draw ...
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How to measure power consumption of Arduino Uno onboard ADC module?
For a project, I am using Arduino Uno onboard SAR ADC module. I want to calculate the power consumption by the ADC module. The way I am thinking to calculate it is AVCC*ICC. Here, AVCC is the supply ...
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ESP32 High Power Consumption in Deep Sleep Mode
I'm running a Python program on an ESP32 (MicroPython firmware) that fetches online data to save it locally every 5 hours, and then goes into deep sleep mode. The board is powered with a 3.7V lipo ...
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Measure low AC Power consumption (oscilloscope? MCU?)
I would like to measure AC power consumption of devices such as AC/DC charger, AC LED bulb or an electric circuit in the main box of a house.
However, their power consumption are quite low and the ...
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Power consumption measurement on the bench
I've been using the Atmel Power Debugger to sort out power consumption issues on some µController based circuits... and have been pretty pleased. Unfortunately, it's limited to a maximum of 5.5 volts ...
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LTE vs 3G power cost at low speed
I am currently working on a device in which I need to implement internet connection. For that I intend to use a GSM module, for example this one: SIM5320. This is a 3G module. I have been reading ...
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What power relationship (between active and reactive powers) should I expect from a CNC machine?
I have collected loads of power data from a 3-phase CNC machine and it all looks like this:
The 3-phase active and reactive powers can be seen above, as well as the Q (reactive) - P (active) ...
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