Editing Open circuit

'''Open circuit''' may refer to:
*[[Open circuit breathing apparatus]], any type of breathing apparatus where the exhaled gas is discharged to the surroundings without recycling any of it
**[[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 breathing gas
**[[Surface-supplied diving equipment|Open circuit surface-supplied diving equipment]], a type of surface-supplied diving equipment where the user breathes from the supplied gas and exhales to the surroundings without recycling the exhaled gas
*[[Open-circuit test]], a method used in electrical engineering to determine the impedance in the excitation branch of a real transformer
*[[Open-circuit voltage]], the difference of electrical potential between two terminals of a device when there is no external load connected
*An [[electrical circuit]] is an "open circuit" if it lacks a complete path between the terminals of its power source

==See also==
*[[Closed-circuit (disambiguation)]]
*[[Short circuit (disambiguation)]]
*[[Open system (disambiguation)]]


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