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2. Intrinsic safety - Wikipedia

   en.wikipedia.org/wiki/Intrinsic_safety

   Intrinsically safe mobile phones must meet special battery design criteria in order to achieve UL, ATEX directive, or IECEx certification for use in explosive atmospheres. Only properly designed battery-operated, self-contained devices can be intrinsically safe by themselves. Other field devices and wiring are intrinsically safe only when ...

3. Electrical equipment in hazardous areas - Wikipedia

   en.wikipedia.org/wiki/Electrical_equipment_in...

   Unlike ATEX which uses numbers to define the safety "Category" of equipment (namely 1, 2, and 3), the IEC continued to utilise the method used for defining the safe levels of intrinsic safety namely "a" for zone 0, "b" for zone 1 and "c" for zone 2 and apply this Equipment Level of Protection to all equipment for use in hazardous areas since ...

4. Inherent safety - Wikipedia

   en.wikipedia.org/wiki/Inherent_safety

   (Kletz originally used the term intrinsically safe in 1978, but as this had already been used for the special case of electronic equipment in potentially flammable atmospheres, only the term inherent was adopted. Intrinsic safety may be considered a special subset of inherent safety). In 2010 the American Institute of Chemical Engineers ...

5. Foundation Fieldbus H1 - Wikipedia

   en.wikipedia.org/wiki/Foundation_Fieldbus_H1

   The Foundation Fieldbus H1 has support for Intrinsically Safe Wiring. Unlike other protocols, FOUNDATION H1 provides explicit synchronization of control and communication for precisely periodic (isochronous) communication and execution of control functions with minimized dead time and jitter.

6. EBow - Wikipedia

   en.wikipedia.org/wiki/EBow

   The second, introduced in 1983, added an on/off switch and a more powerful drive. The third, introduced in 1989, had improved sensitivity and faster attack. The EBow Plus, introduced in 1998, adds a blue LED and a switch to allow users to move between normal and harmonic modes (which sounds one octave higher). [4] It is powered by a nine-volt ...

7. Guitar wiring - Wikipedia

   en.wikipedia.org/wiki/Guitar_wiring

   A diagram showing the wiring of a Gibson Les Paul electric guitar. Shown are the humbucker pickups with individual tone and volume controls (T and V, respectively), 3-way pickup selector switch, tone capacitors that form a passive low-pass filter, the output jack and connections between those components. The top right shows a modification that ...