Get a constant +5V output by switching between a +5V input and a single-cell LI+ rechargeable cell
https://www.electronics-lab.com/get-a-constant-5v-output-by-switching-between-a-5v-input-and-a-single-cell-li-rechargeable-cell/
App note from Maxim Integrated on providing smooth power from two sources. Link here (PDF) Design provides a simple method for maintaining an uninterrupted +5V even while switching between the external +5V supply and a rechargeable single-cell Li+ battery. Get a constant +5V output by switching between a +5V input and a single-cell LI+ rechargeable cell […]
Supercap energy density rivals batteries
https://www.electronics-lab.com/supercap-energy-density-rivals-batteries/
by Martin Cooke @ elektormagazine.com: A novel design of supercapacitor using a hybrid silica sol-gel material and self-assembled monolayers of a common fatty acid has been developed by researchers working at the Georgia Institute of Technology. The device is said to provide an electrical energy storage capacity rivaling certain batteries, with both a high energy density […]
ESP8266 MQTT battery monitor project
https://www.electronics-lab.com/esp8266-mqtt-battery-monitor-project/
Steve’s latest project, a wireless MQTT battery monitor: This board uses an ESP8266 (ESP12), a Texas Instruments INA226 I2C voltage and current monitor, and a Texas Instruments LMR12010X buck converter. This board is designed to wirelessly monitor 12 volt batteries and power supplies using an external current shunt resistor. The voltage across the shunt resistor […]
Buck battery charger handles multiple chemistries
https://www.electronics-lab.com/buck-battery-charger-handles-multiple-chemistries/
by Susan Nordyk @ edn.com: The LTC4015 synchronous step-down battery charger controller from Linear Technology offers charge current of up to 20 A, multiple-chemistry operation, and onboard digital telemetry. The controller transfers power from a variety of input sources, such as wall adapters and solar panels, to a Li-Ion polymer, LiFePO4, or lead-acid battery stack with […]