1. Switches.
- Author
-
Ho, J. D., MFA
- Subjects
Electric appliance protection ,Electric switchgear ,Electric power system safety measures - Abstract
Switches are one of the most basic forms of controlling electricity. At their simplest, switches turn an electrical current on or off. The standard light switch, common in homes around the world, was invented in 1884. Switches occur in simple devices such as lamps, but they can also control individual functions within complex electronic devices like computers, stereos, or DVD players.
- Published
- 2019