Open circuit

The term Open circuit may refer to:

• Open-circuit voltage, the difference of electrical potential between two terminals of a device when there is no external load connected
• Open-circuit scuba, a type of SCUBA-diving equipment where the user breathes from the set and then exhales to the surroundings without recycling the exhaled air
• Self-contained breathing apparatus, used in open-circuit SCUBA
• An electric circuit is an "open circuit" if it lacks a complete path between the positive and negative terminals of its power source. Open circuits have infinite electric resistance.

See also

• Closed-circuit (disambiguation)
• Short circuit (disambiguation)
• Open system (disambiguation)

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