Questions tagged [battery-operated]
Involving or pertaining to a circuit or device that is intended to be operated with cells or batteries (as opposed to mains power, for example).
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Can I put schottky diodes in I2C line to prevent LTC2944 from powering my circuit through SDA and SCL?
I am using a LTC2944 connected to a battery that fluctuates between 11V and 14.4V. SDA and SCL lines go to a microcontroller and other peripherals (also connected to 3V3 via 10k resistors). I can read ...
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Is it possible to get a dual supply from 2S Li-ion battery which has a battery protection IC connected to it
In the image below, can the node connecting cell 1 and cell 2 be used as ground and PB+ as the positive rail and PB- as the negative rail? Those positive and the negative rails will then be regulated ...
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Creating a short signal transmission in HT12E based RF communication
In HT12E we continuously transmit even when the input data pins are not changed.My problem is battery optimisation. I am transmitting only ON/OFF switch state through HT12E based RF module and Since ...
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Low Quiescent Current over USB Type-C [closed]
I'm working on a battery powered project which I'm currently planning on powering over USB Type-C for flexibility. The 5V/3A spec would satisfy my needs for the high end of power draw, however, I want ...
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Managing Solar Power, battery, and load for raspbery pi - designing power management system
So, I am working on a scientific instrument that measures air quality. It uses a raspberry pi with a couple of sensors. Essentially, this instrument is going to be deployed in an Urban area in a ...
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Do the decoupling capacitors act as capacitive load to the opamp which is used to make a virtual gorund?
Source: https://tangentsoft.com/elec/vgrounds.html
I am trying to design a circuit using a single battery as shown in the image above, I am worried that all the decoupling capacitors that will go from ...
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Are these cells likely to be in series or parallel or both [closed]
Here is a Dell product that is battery operated. Link to a website selling a Dell computer.
The buyer can choose from 3 battery options. From this would you infer that the different options produce ...
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Best way to halve 12V battery voltage for 6V device, while still being able to measure the battery level?
I have a device that is powered by 4 AA (4x1.5V=6V) batteries, but I want to power it with a 12V battery.
The device measures its input voltage to determine the battery level. I only need to know if ...
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Can I charge multipe 18650 lithium cells at fixed 4.2?
This question is edited.
I am currently working on an emergency light and I want to power it with 4 18650 cells in parallel.
I've tried using TP4056, but that is really slow. It takes well above 10 ...
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Why does this battery use 4.2 V when its nominal voltage is 3.7 V?
I changed my headphone power circuit and I noticed it was using 4.2 V to charge a 3.7 V battery. I am confused why it is using 4.2 V.
I know to charge a battery you need more voltage than its rating, ...
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Running Teensy41 on battery
I'm trying to get my Teensy41 project to run on battery. The docs at the link below seem to indicate that connecting 5v across VIN and GND pins should be enough to run on battery. Initially I am just ...
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Powering a microcontroller with an Li-ion Battery --> How to choose a protection?
The introduction
I'm currently working on a low power project that is using the ESP32-S3 microcontroller variant from Seeed Studio, the XIAO Series ESP32-S3 (Official wiki: https://wiki.seeedstudio....
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Power two microcontrollers with different voltages from one power supply [closed]
Background: We want to extend a Lasertag blaster with a Raspberry Pi Pico microcontroller (and more peripherals, e.g. LEDs, IR TX & RX, buttons).
Goal: Use the existing 4xAA battery source (6-7V). ...
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How to light up a rocker switch powered by a battery of only 1.5v?
I have a small hobby project for which I wired 4 AA batteries in parallel to achieve the desired result, which comes to 1.5V, as the batteries are in parallel, which is what works for my project.
My ...
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