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  2. Construction of electronic cigarettes - Wikipedia

    en.wikipedia.org/wiki/Construction_of_electronic...

    The steel wick must be oxidized to prevent arcing of the coil. [93] Another type is the Sub ohm tank. [94] These tanks have rebuildable or RBA kits. [94] They can also use coil heads of 0.2 ohm, 0.4 ohm, and 0.5 ohm. [94] These coil heads can have stainless steel coils. [95]

  3. Smoke testing (software) - Wikipedia

    en.wikipedia.org/wiki/Smoke_testing_(software)

    [1] [2] When used to determine if a computer program should be subjected to further, more fine-grained testing, a smoke test may be called a pretest [5] or an intake test. [1] Alternatively, it is a set of tests run on each new build of a product to verify that the build is testable before the build is released into the hands of the test team. [6]

  4. Crankshaft position sensor - Wikipedia

    en.wikipedia.org/wiki/Crankshaft_position_sensor

    A crank sensor (CKP) [1] [2] [3] is an electronic device used in an internal combustion engine, both petrol and diesel, to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control the fuel injection or the ignition system timing and other engine parameters.

  5. Ignition coil - Wikipedia

    en.wikipedia.org/wiki/Ignition_coil

    An ignition coil is used in the ignition system of a spark-ignition engine to transform the battery voltage to the much higher voltages required to operate the spark plug(s). The spark plugs then use this burst of high-voltage electricity to ignite the air-fuel mixture. The ignition coil is constructed of two sets of coils wound around an iron ...

  6. Loading coil - Wikipedia

    en.wikipedia.org/wiki/Loading_coil

    American early and middle 20th century telephone cables had load coils at intervals of a mile (1.61 km), usually in coil cases holding many. The coils had to be removed to pass higher frequencies, but the coil cases provided convenient places for repeaters of digital T-carrier systems, which could then transmit a 1.5 Mbit/s signal that distance ...

  7. Induction coil - Wikipedia

    en.wikipedia.org/wiki/Induction_coil

    An induction coil consists of two coils of insulated wire wound around a common iron core (M). [1] [7] One coil, called the primary winding (P), is made from relatively few (tens or hundreds) turns of coarse wire. [7] The other coil, the secondary winding, (S) typically consists of up to a million turns of fine wire (up to 40 gauge). [8] [1] [7]

  8. Resistor - Wikipedia

    en.wikipedia.org/wiki/Resistor

    For example, a 10 ohm resistor connected in parallel with a 5 ohm resistor and a 15 ohm resistor produces ⁠ 1 / 1/10 + 1/5 + 1/15 ⁠ ohms of resistance, or ⁠ 30 / 11 ⁠ = 2.727 ohms. A resistor network that is a combination of parallel and series connections can be broken up into smaller parts that are either one or the other.

  9. Rogowski coil - Wikipedia

    en.wikipedia.org/wiki/Rogowski_coil

    A Rogowski coil is a toroid of wire used to measure an alternating current I(t) through a cable encircled by the toroid. The picture shows a Rogowski coil encircling a current-carrying cable. The output of the coil, v(t), is connected to a lossy integrator circuit to obtain a voltage V out (t) that is proportional to I(t).