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 ?
Software for Generation of Actuating Signals for Dampers in LabView, In: Process Control 2008, Kouty nad Desnou, Czech Republic, 2008, page 208, ISBN 978-80-7395-077-4
The development of an application as dampers for quakes requires three levels of description [1-4], two of which are associated with SMA material particularities and the last one is related to simulation of the damper situated inside the structure under the action of quake accelerations.
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 engine body is supported by three equivalent vertical mounts, which are modeled using linear springs in parallel with viscous dampers.
Smart dampers into a full HVAC Building Intelligence solution that uses predictive analytics to develop the optimal strategy for achieving occupant comfort and energy savings.
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.
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.