Energy Formula:
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Definition: This calculator computes the energy stored in a super capacitor based on its capacitance and voltage.
Purpose: It helps engineers and electronics enthusiasts determine the energy storage capacity of super capacitors for various applications.
The calculator uses the formula:
Where:
Explanation: The energy stored in a capacitor is proportional to the square of the voltage across it and directly proportional to its capacitance.
Details: Proper energy estimation ensures correct capacitor selection for power backup systems, energy harvesting, and pulse power applications.
Tips: Enter the capacitance in Farads and voltage in Volts. All values must be > 0.
Q1: Why is the energy proportional to voltage squared?
A: This relationship comes from the physics of energy storage in electric fields. Doubling the voltage quadruples the stored energy.
Q2: What's a typical super capacitor capacitance range?
A: Super capacitors typically range from 0.1F to several thousand Farads, much higher than regular capacitors.
Q3: How does this differ from battery energy calculation?
A: Batteries store energy chemically with nearly constant voltage, while capacitors store energy electrostatically with voltage that drops as energy is discharged.
Q4: Can I use this for regular capacitors?
A: Yes, the formula applies to all capacitors, but super capacitors are specifically designed for high energy storage.
Q5: How can I convert Joules to Watt-hours?
A: Divide the energy in Joules by 3600 to convert to Watt-hours (Wh).