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
  • 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)

1. Open-circuit voltage
2. Open-circuit test
3. Short circuit
4. Scuba set
5. Scuba diving
6. Self-contained breathing apparatus
7. Rebreather diving
8. IEC 61000-4-5
9. Electromotive force
10. Rebreather
11. Breathing apparatus
12. High altitude breathing apparatus
13. Electrical network
14. Theory of solar cells
15. Stub (electronics)
16. Short circuit (disambiguation)
17. Diving rebreather
18. Lead-acid battery
19. Circuit breaker
20. SPICE