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2. List of common EMC test standards - Wikipedia

   en.wikipedia.org/wiki/List_of_common_EMC_test...

   CISPR is the acronym of Comité International Spécial des Perturbations Radio, [1] or the International Special Committee for Radio Protection of IEC. CISPR Standards aim to the protection of radio reception in the range 9 kHz to 400 GHz from interference caused by operation of electrical or electronic appliances and systems in the electromagnetic environment.

3. Doorbell - Wikipedia

   en.wikipedia.org/wiki/Doorbell

   Pressing the doorbell button, a single-pole, single-throw (SPST) pushbutton switch momentarily closes the doorbell circuit. One terminal of this button is wired to a terminal on a transformer. A doorbell transformer steps down the 120 or 240-volt AC electrical power to a lower voltage, typically 6 to 24 volts. The transformer's other terminal ...

4. Electric bell - Wikipedia

   en.wikipedia.org/wiki/Electric_bell

   When current was passed through the wire, the force of the magnet made the wire swing sideways, out of the mercury, which broke the current to the magnet, so the wire fell back. The modern electric bell mechanism had its origin in vibrating "contact breaker" or interrupter mechanisms devised to break the primary current in induction coils . [ 5 ]

5. Ring (company) - Wikipedia

   en.wikipedia.org/wiki/Ring_(company)

   The "Ring Chime" accessory is a unit plugged into a power outlet to play the doorbell's chime. The "Chime Pro" is an extended version that also doubles as a wireless repeater for Wi-Fi networks. [46] In November 2020, Amazon announced the recall of 350,000 Ring doorbells in the United States and 8,700 in Canada due to a potential fire risk. [47]

6. Packers head coach, Lions fan separated on field before ...

   www.aol.com/packers-head-coach-lions-fan...

   The Lions defeated the Packers last month, 24-14, at Lambeau Field. Follow Fox News Digital’s sports coverage on X , and subscribe to the Fox News Sports Huddle newsletter .

7. List of Arduino boards and compatible systems - Wikipedia

   en.wikipedia.org/wiki/List_of_Arduino_boards_and...

   Japanese Arduino compatible kit using Uno board setting. Includes two mini-B USB sockets, 1602 LCD socket, 5 V or 3.3 V power selection, breadboard area. Cosmo Black Star [85] ATmega328 JT5 [86] Arduino layout-compatible board. Based on the Arduino Duemilanove. CraftDuino [87] Manufactured and sold by RoboCraft Team. CT UNO: ATmega328P Cytron ...