Introduction This circuit is a battery characterizer that applies a fixed load to a charged NiCad or NiMH cell and measures milliamp-hour capacity as it discharges. There is no single load that can be applied to a battery to measure milliamp-hours. It depends on the battery type, it’s intended application, etc. This device is simply […]
BATTERY CHARACTERIZER using PIC18F252 Read More »
Being an active outdoor guy, I have a few different types of 12V lights and a variety of battery types. – For flying RC planes and quadcopters at night, we use sealed lead acid batteries to power our club tables. – For fishing, I have a few 12V 2W led lights, powered by 2200mA, 3
PIC 12F675 Programmable 12V Battery Monitor Read More »
Description Recently I got a new motorbike and on my second trip out, with only 50 miles on the clock the rectifier/regulator unit failed. The battery on a bike is pretty small and with the head light permanently on and all the ECU, ignition and fuel injection stuff it didn’t take long to run the
Automotive Voltage Monitor using PIC12F683 Read More »
Some of the fruit and vegetables we eat can be used to make electricity. The electrolytes in many fruit and vegetables, together with electrodes made of various metals can be used to make primary cells. One of the most easily available vegetable, the ubiquitous lemon can be used to make a fruit cell together with
Tiny AVR Microcontroller Runs on a Fruit Battery Read More »
Description This project came about because I have three motorbikes and being a bit of a fair weather biker they don’t get used much over the winter months. I have an OptiMate™ 4 charger that I connect to the bikes but this needs me to manually swap it from one bike to the next and
Automatic Charger Sharing for Motorcycle Battery Charger using PIC16F628A Read More »
Introduction This circuit is a data logger that records voltage samples at specific time intervals. I’ve used it to record the voltage discharge curve on NiCad battery packs. The data file can be dropped into a spreadsheet and plotted. I’ve also used it to record the amount of time a possibly defective refrigeration unit was
DATA LOGGER measures and stores voltage using PIC16F876 Read More »
Microchip’s Digital Pure Sine Wave Uninterruptible Power Supply (UPS) Reference Design is based on the dsPIC33F “GS” series of digital-power Digital Signal Controllers (DSCs). This reference design demonstrates how digital-power techniques when applied to UPS applications enable easy modifications through software, the use of smaller magnetics, intelligent battery charging, higher efficiency, compact designs, reduction in
PIC based UPS Schematic / Firmware / PCB Layout Read More »
This cheap and easy to build NiCd/NiMH Battery Charger is suitable for automatically charging a wide range of batteries for many applications. Proper chargers are usually expensive and cheap chargers supplied with the original equipment often incorrectly charge the cells and dramatically shorten their life. This ‘intelligent’ charger was designed for high current and rapid
Intelligent NiCd/NiMH Battery Charger using PIC16C711 Read More »
You get a really good feeling when you plug in some lights and appliances and power them with your own electricity from the sun or wind. You get a really bad feeling when you run those items and the clouds come for days or weeks or months on end. The batteries get lower and lower.
Grid Powered Battery Charger – The Plans using PIC16F676 Read More »
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