What exactly does the capacitor do in a Tesla coil?

AI Thread Summary
The capacitor in a Tesla coil plays a crucial role in the primary circuit by storing electric energy during the charge-up cycle. This energy is then released rapidly, creating oscillations that drive the coil's operation. The capacitor works in conjunction with the spark gap to form a tank circuit, which is essential for generating high-voltage discharges. Understanding this function is key to grasping the science behind Tesla coils, even for those not intending to build one. The capacitor's ability to store and release energy is fundamental to the coil's performance.
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In all tutorials I have read on tesla coils, they have said to use a capacitor spark-gap configuration, to create a tank circuit. I want to know exactly what this means, and what is its purpose. I am not going to build a Tesla coil, I am nearly just interested in the science of it.
 
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The capacitor on the primary side? It stores electric energy during the charge-up cycle of Tesla coil operation.
 
ericgamliel said:
The capacitor on the primary side? It stores electric energy during the charge-up cycle of Tesla coil operation.
Yes, on the primary side, and that's it?
 

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