"Feedthrough capacitor" redirects here. Not to be confused with DC block.
For the interconnect in printed circuit boards, see via (electronics).
60 kV vacuum feedthrough on a conflat flangeCeramic feedthrough capacitor with cable lug and a capacitance of 1 nF.
A feedthrough is a conductor used to carry a signal through an enclosure or printed circuit board. Like any conductor, it has a small amount of capacitance. A "feedthrough capacitor" has a guaranteed minimum value of shunt capacitance[clarify] built in it and is used for bypass purposes in ultra-high-frequency applications.[1] Feedthroughs can be divided into power and instrumentation categories. Power feedthroughs are used to carry either high current or high voltage. Instrumentation feedthroughs are used to carry electrical signals (including thermocouples) which are normally low current or voltage. Another special type is what is commonly known as RF-feedthrough, specifically designed to carry very high frequency RF or microwave electrical signals.
A feedthrough electrical connection may have to withstand considerable pressure difference across its length. Systems that operate under high vacuum, such as electron microscopes, require electrical connections through the pressure vessel. Similarly, submersible vehicles require feedthrough connections between exterior instruments and devices and the controls within the vehicle pressure hull. A very common example of a feedthrough connection is an automobile spark plug where the body of the plug must resist the pressure and temperature produced in the engine, while providing a reliable electrical connection to the spark gap in the combustion chamber. (Spark plugs are occasionally used as low-cost or improvised feedthrough connections in non-engine applications.)
There are electrical hermetically sealed feedthroughs for instrumentation, high amperage and voltage, coaxial, thermocouple and fiber optics. Rotary or mechanical feedthroughs also exist.
A feedthrough is a conductor used to carry a signal through an enclosure or printed circuit board. Like any conductor, it has a small amount of capacitance...
In analog electronics, Clock feedthrough is the result of the coupling between control signals on the analog switch and analog signal passing through...
hermetic seals. Epoxy-based seals can increase signal density within a feedthrough design compared to other technologies with minimal spacing requirements...
feedthrough is a flange that contains a vacuum-tight electrical, physical or mechanical connection to the vacuum chamber. An electrical feedthrough allows...
producing both sum and difference frequencies. The local oscillator feedthrough is due to the imperfect isolation from the IF signal path in the mixer...
magnetron sputter gun showing the target-mounting surface, the vacuum feedthrough, the power connector and the water lines. This design uses a disc target...
201400445. Abraham, Eric R.I.; Cornell, Eric A. (1998-04-01). "Teflon feedthrough for coupling optical fibers into ultrahigh vacuum systems". Applied Optics...
an ideal amplifier with infinite gain - a nullor. To find the direct feedthrough G 0 {\displaystyle G_{0}} we simply let gm → 0 and compute the resulting...
higher residual noise level. In class AB cores, at low frequencies, feedthrough of control voltage VY into the output signal has two principal sources:...
(SMICs), two separate cast alloy intake manifolds interconnected by a "feedthrough" system to equalise the pressure in the two cylinder banks, two-position...
wasting 3 dB of gain here, this technique decreases common-mode gain and feedthrough of power supply noise. A current signal i at Q15's base gives rise to...
and lower ESR at higher cost than standard electrolytic capacitors. A feedthrough capacitor is a component that, while not serving as its main use, has...
Some later tubes used metal cases and feedthroughs, and only the insulation around the individual feedthroughs used glass. Today, glass-seal packages...
effects of over 20 times that of a bare Hall device. The range of a given feedthrough sensor may also be extended upward and downward by appropriate wiring...
capacitor, single layer disc, resin coated, with through-hole leads Feedthrough ceramic capacitor, used for bypass purposes in high-frequency circuits...
core, and winding Miscellaneous RF models, including the DC block, DC feedthrough, and microstrip and stripline elements (bend, cross, corner, curve, open...
of an analog switch, where a longer rise time means lower capacitive feedthrough, and thus lower coupling noise to the controlled analog signal lines...
S2CID 119339212. Hsing, Warren W.; Hoffman, Nelson M. (May 1997). "Measurement of Feedthrough and Instability Growth in Radiation-Driven Cylindrical Implosions". Physical...
(SMICs), two separate cast alloy intake manifolds interconnected by a "feedthrough" system to equalise the turbo boost pressure in the two cylinder banks...
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