damper

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damper

1. a movable plate to regulate the draught in a stove or furnace flue
2. a device to reduce electronic, mechanical, acoustic, or aerodynamic oscillations in a system
3. Music the pad in a piano or harpsichord that deadens the vibration of each string as its key is released

Damper

An adjustable metal plate inside a flue or air duct, which regulates the draft of a stove, fireplace, or furnace, or controls the flow of air inside a duct; operates automatically in the event of a fire to close off the duct.

Damper

 

a device for extinguishing or attenuating (damping) oscillations or preventing mechanical vibrations that occur during the operation of machines and instruments. Hydraulic and pneumatic dampers are used in automatic regulators and measuring instruments, and dampers in the form of inductance coils are used in electrical machines. The devices used to stop the vibration of the strings in multistring musical instruments are also called dampers; they consist of individual blocks (in a piano) or pads (in a harp) with felt cemented to them.

damper

[′dam·pər]
(electronics)
A diode used in the horizontal deflection circuit of a television receiver to make the sawtooth deflection current decrease smoothly to zero instead of oscillating at zero; the diode conducts each time the polarity is reversed by a current swing below zero.
(mechanical engineering)
A valve or movable plate for regulating the flow of air or the draft in a stove, furnace, or fireplace.

damper

butterfly damper, 1
damper, 1
1. A device used to vary the volume of air passing through an air outlet, inlet, or duct; it does not significantly affect the shape of the delivery pattern.
2. A pivoted cast-iron plate at fireplace throat, i.e., between fireplace and smoke chamber, to regulate draft.
3. Same as fireplace damper.
References in periodicals archive ?
The metropolitan government is urging KYB to conduct safety inspections on the dampers as soon as possible, but the inspection schedule and how to implement the checks have yet to be decided.
The superelastic SMA or conventional steel plate dampers are installed at the center of the bracing member, as shown in the figure.
An interesting aspect about the setup of the DRiV: the damper doesn't require an electronic control unit.
All dampers in the air-handling unit and the zones must be pressure independent so that airflow rates through the dampers may be incorporated into the control algorithms.
Reaching the 500,000 dampers inspected milestone is a very big accomplishment.
The damper top mounts are used in the vehicles not only to provide ideal Noise-Vibration-Harshness (NVH) performance but also to improve ride comfort, driving safety, and handling.
First, integral constitutive relation is adopted; it then establishes a differential and integral equations of motion of SDOF weak nonlinear structure containing the general integral model viscoelastic dampers and the braces.
An adaptive frequency-shaped LQG (AF-LQG) control strategy is developed for effectively operating self-sensing MR dampers to suppress vibration of bridge cables.
Dampers are installed vertically, low input carried in the lower cap, and an output through the side surface at a distance of 100 mm from the bottom cover of the damper.
An extensive line up of dampers is slated for presentation at InnoTrans 2016, including not only vertical and horizontal dampers and yaw dampers for damping rail vehicle yawing and rolling motion, but also the first advanced variable damper system and millimeter-wave radar speed sensing module to be exhibited by Hitachi Automotive Systems in Europe.
"Fail-Safe Magneto- Rheological Fluid Dampers for Off-Highway, High-Payload Vehicles", Journal of Intelligent Material Systems and Structures, 11.
The sections above have proposed a method of equivalently expressing a synthesis of sprung and unsprung positive and negative skyhook dampers by expressing control lag using both sprung and unsprung velocity components.