Closed circuit

Closed circuit can refer to:

• Closed-circuit television
• Closed-circuit radio
• Closed circuit breathing apparatus, commonly known as rebreathers for portable units, and as component parts of life-support systems for more complex equipment.
• Closed Circuit (1978 film), a 1978 Italian film
• Closed Circuit (2013 film), a 2013 British thriller film
• An electric circuit is a "closed circuit" if it contains a complete path between the positive and negative terminals of its power source
• Closed Circuit (album), a 2001 album by New Zealand composer Peter Jefferies

1. Closed-circuit television
2. Rebreather
3. Closed Circuit (2013 film)
4. Closed-circuit television camera
5. Diving rebreather
6. Closed-circuit radio
7. List of JCP/WCW closed-circuit events and pay-per-view events
8. Self-contained breathing apparatus
9. The Closed Circuit
10. Closed Circuit (album)
11. Scuba set
12. Closed Circuit (1978 film)
13. Breathing apparatus
14. Rebreather diving
15. Breathing circuit
16. High altitude breathing apparatus
17. Kirchhoff's circuit laws
18. Cement mill
19. Pay-per-view
20. Virgin Atlantic GlobalFlyer