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2. Substrate-integrated waveguide - Wikipedia

   en.wikipedia.org/wiki/Substrate-integrated_waveguide

   A substrate-integrated waveguide (SIW) (also known as post-wall waveguide or laminated waveguide) is a synthetic rectangular electromagnetic waveguide formed in a dielectric substrate by densely arraying metallized posts or via holes that connect the upper and lower metal plates of the substrate.

3. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   Vintage push-button light switches. The push-button light switch has two buttons: one that closes the contacts and one that opens the contacts. Pushing the raised button opens or closes the contacts and pops out the previously depressed button so the process can be reversed. In the U.S., the buttons were commonly black; the "on" button ...

4. Cathode-ray tube - Wikipedia

   en.wikipedia.org/wiki/Cathode-ray_tube

   The electron beam is steered by varying the voltage difference across plates in a pair; For example, applying a voltage to the upper plate of the vertical deflection pair, while keeping the voltage in the bottom plate at 0 volts, will cause the electron beam to be deflected towards the upper part of the screen; increasing the voltage in the ...

5. Power electronic substrate - Wikipedia

   en.wikipedia.org/wiki/Power_electronic_substrate

   Power electronic substrate. The role of the substrate in power electronics is to provide the interconnections to form an electric circuit (like a printed circuit board ), and to cool the components. Compared to materials and techniques used in lower power microelectronics, these substrates must carry higher currents and provide a higher voltage ...

6. AOL Mail

   mail.aol.com/?icid=aol.com-nav

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Keystone module - Wikipedia

   en.wikipedia.org/wiki/Keystone_module

   Keystone module. A keystone module is a standardized snap-in package for mounting a variety of low-voltage electrical jacks or optical connectors into a keystone wall plate, face plate, surface-mount box, or a patch panel . Keystone modules have a rectangular face of 14.5 mm wide by 16.0 mm high and are held in place with flexible tabs.