Li-Po/Li-Ion Arduino Charger Shield using BQ21040
https://www.electronics-lab.com/li-po-li-ion-arduino-charger-shield-using-bq21040/
This Li-Po/Li-ion Arduino charger shield is mainly designed to power up the Arduino from single 3.6V Li-Po battery. Li-Ion and Li-Pol Charger/ DC-DC Boost converter Arduino shield provides 6.5V/400mA from single Lithium Polymer battery. The Arduino shield is equipped with BQ21040 battery charger IC and CS5171 step up DC-DC converter. The shield also has prototype […]
How to shrink your USB Type-C battery charger [PDF]
https://www.electronics-lab.com/shrink-usb-type-c-battery-charger-pdf/
Maxim’s app note on a highly compact Type-C charger solution. A highly integrated solution, as seen with the MAX77860 USB Type-C 3A switch-mode charger, dramatically reduces system complexity by integrating the charger, the power path, the Safeout LDO, ADC, and the USB-C CC and BC 1.2 detection in a small 3.9mm x 4.0mm, 0.4mm pitch, […]
makerPower Solar – An intelligent solar power system for the internet of things.
https://www.electronics-lab.com/makerpower-solar-intelligent-solar-power-system-internet-things/
makerPower Solar is a combination intelligent solar battery charger and power supply for low- to medium-power devices freeing them from the outlet. It is designed to provide 24/7 power for a wide range of embedded systems and IoT gadgets. According to Julio: Optimal charging is provided through a dynamic perturb-and-observe maximum power-point transfer converter (MPPT) […]
BrainDead MPPT Solar charger 35V/8A
https://www.electronics-lab.com/braindead-mppt-solar-charger-35v-8a/
Simple solar charger 35V/8A with automatic MPPT supporting SLA/Li-Ion/LiFePO4 up to 8s. by Adam Lučanský: PCB DIN-rail mountable MPPT solar charger (software-less), as well as ideal-diode prioritizer (if battery is full, load is powered directly from solar panel without cycling battery). Prototype PCB is in production (as of 20.8.2018) and soon ready for testing. The […]
Low-current charger provides battery backup from USB to 1-cell applications
https://www.electronics-lab.com/low-current-charger-provides-battery-backup-usb-1-cell-applications/
Another app note from Maxim Integrated on small current battery management.The circuit provides a 1-cell Li ion backup battery charger for low-current devices performing resistor limited current sharing. A simple circuit sometimes needs to charge a 1-cell Lithium-ion (Li+) battery from a USB power source and simultaneously provide backup power for low-current-consumption devices. The circuit […]
ATmega32U4-Based Synchronous MPPT Buck Solar Charger
https://www.electronics-lab.com/atmega32u4-based-synchronous-mppt-buck-solar-charger/
You want to maximize the power output of your solar panel? Then you need a maximum power point tracking charge controller! Source files here. Features: Programmable with Arduino IDE Input voltage: 15 – 22V Output voltage: 1 – 14.4V Simple MPPT (Maximum Power Point Tracking) solar charge controller for 18V solar panels Proper buck converter […]
Lipo Charge/Boost/Protect board in 18650 cell holder format
https://www.electronics-lab.com/lipo-charge-boost-protect-board-18650-cell-holder-format/
Peter6960 published a new build: So couple months ago, GreatScott made a video where he designed a circuit. Nothing too innovative, just the same TP4056 charger the MT3608 Boost combined on one PCB. He did add a Lipo protection circuit though, initially using the same DW01. But then, the Aha moment from this video, he […]
USB Adaptive Charger (2.7A per port) with Wattmeter
https://www.electronics-lab.com/usb-adaptive-charger-2-7a-per-port-wattmeter/
A 10.8A, 4 port USB charger with a wattmeter and adaptive intelligent charging. It works by taking any DC input between 7V to 17V, from an AC/DC adapter or car adapter. It can be used anywhere with wall outlets, car power ports, lead-acid batteries, DC-output solar panels, and lithium-ion battery packs (2S, 3S, and 4S). […]
High Voltage Capacitor Charger for Photo-Flash Using LT3751
https://www.electronics-lab.com/high-voltage-capacitor-charger-photo-flash-using-lt3751/
The project is built for professional photo flash systems. Circuit generates high voltage from low voltage battery to operate a photo-flash tube. The project can also be used in other applications like high voltage capacitor charger, emergency strobe, high voltage power supply, security, detonators etc. LT3751 is the heart of the project. The LT3751 is […]
Versatile And Open Source LiPo bBattery Breadboard Power Supply
https://www.electronics-lab.com/versatile-open-source-lipo-bbattery-breadboard-power-supply/
Orlando Hoilett from Calvary Engineering LLC designed a versatile Li-Po battery breadboard power supply and wrote an Instructables on it. This power supply outputs 3.3V to the breadboard and takes input from a single-cell LiPo battery. The breadboard power supply also has the ability to charge the battery without needing to separate it from the circuit board. More importantly, this […]