I have finally got round to designing the balancing circuitry for my ultracapacitor banks, which have a total voltage of 15v when fully charged. The 2600F capacitors have a max working voltage of 2.5v each, so to ensure reliable operation, balancing is required to make sure that each capacitor is
Here’s the regulator hooked up with test clips, on the right is the supply from the ultracapacitor bank, while on the left is the output, feeding a 2.3A brushless fan as a test load. These regulators do get warm, even with no load, with a 2.3A load on the output,
As an ultracapacitor has a pretty linear discharge curve, some electronics are required to make them behave more like batteries, such as as SEPIC converter. On the right is a MuRata Power Solutions UQQ-12/8-Q12P-C switching regulator, which will accept a 9-36v input source & output a constant 12v at 8A
Just a quickie to note down the current progress of another project – Ultracapacitors. Pictured right is a bank of 6 2.5v 2600F Maxwell Boostcaps, for a total of 15v at 433.333F. A total energy storage of 48.7kJ. Coming soon will be the inclusion of charge balancing, using Zener diodes &