The transmitters built up a high voltage for discharging across a spark gap and so used porcelain capacitors to withstand that voltage. High frequency was also required. These were basically ...

with the C being charged until the spark gap triggers, forcing the subsequent discharge of the capacitor and causing the spark to extinguish and the cycle to repeat. The resulting chain of high ...

Pseudocapacitors are a type of electrochemical energy storage device that combines the high energy density of batteries with the fast charge/discharge rates and long cycle life of capacitors. They ...