1 Capacitors in Direct Current Circuits One capacitor in a DC circuit: Two capacitors in a DC circuit:  In series:

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Presentation transcript:

1 Capacitors in Direct Current Circuits One capacitor in a DC circuit: Two capacitors in a DC circuit:  In series:

2 Capacitors in Direct Current Circuits Two capacitors in a DC circuit:  In parallel: Multiple capacitors:  In series:  In parallel:

3 Example Step-up or step-down DC-DC converter: When a short power pulse is needed:  A camera flash: A flash bulb in a camera requires that a large amount of energy flow through it in a short period of time. Cameras use capacitors to store this energy and make it available in an instant.  Research studies (like in nuclear fusion): The National Ignition Facility in Livermore, CA houses the largest laser in the world for nuclear fusion studies. For each laser pulse, a bank of capacitors emits a burst of power that for a brief instant is a thousand times greater than the average power consumption of the entire United States.

4 R and C in a DC circuit RC in a DC circuit  Charging:  Discharging: