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- Piezo_switch abstract "A piezo switch is an electrical switch based on the piezoelectric effect.The charge generated by the piezoelectric element in the switch is typically used to turn on an integrated semiconductor device such as a field effect transistor (FET), causing the switch assembly's output to be active, or \"on\". When the FET is on, current can flow through it as with a conventional metal contact-based switch. After the voltage pulse is dissipated in the gate resistor, the FET turns back \"off\", its normal high impedance state. The piezoelectric effect uses the fact that force applied to certain materials causes stresses that generate this electric charge. In the case of piezo switches, the force could be compressive pressure that causes the (typically disc-shaped) piezo element to bend very slightly like a drumhead.Thus piezo switches produce a single, brief \"on\" pulse. This pulse can vary with the amount of pressure which is applied, since higher pressures generate higher voltages which take longer to dissipate. A capacitor may be used to store the charge in order to lengthen the time constant of the gate circuit and therefore the width of the pulse. With additional circuitry this pulse can be extended further or used to change the state of an output from steady \"Off\" to steady \"On\" by toggling a flip-flop.Piezo switches have some interesting advantages over their conventional mechanical counterparts. One is that there are no moving parts, just the small deformation on the front plate and the piezo element (typically a few micrometers). This means the lifetime of such a switch can be ensured to be tens of millions of operations, since there is no wear involved. Another advantage is that they may easily be completely sealed from the environment and thus made weatherproof. They are often constructed with stainless steel housings such that they are resistant to damage by vandals or heavy use.".
- Piezo_switch wikiPageID "17231317".
- Piezo_switch wikiPageLength "2378".
- Piezo_switch wikiPageOutDegree "25".
- Piezo_switch wikiPageRevisionID "631123688".
- Piezo_switch wikiPageWikiLink Category:Switches.
- Piezo_switch wikiPageWikiLink Charge_(physics).
- Piezo_switch wikiPageWikiLink Drumhead.
- Piezo_switch wikiPageWikiLink Field-effect_transistor.
- Piezo_switch wikiPageWikiLink Flip-flop_(electronics).
- Piezo_switch wikiPageWikiLink Force.
- Piezo_switch wikiPageWikiLink Piezo_ignition.
- Piezo_switch wikiPageWikiLink Piezoelectric_sensor.
- Piezo_switch wikiPageWikiLink Piezoelectricity.
- Piezo_switch wikiPageWikiLink Piezoresistive_effect.
- Piezo_switch wikiPageWikiLink Pressure.
- Piezo_switch wikiPageWikiLink Pulse_wave.
- Piezo_switch wikiPageWikiLink Resistor.
- Piezo_switch wikiPageWikiLink Semiconductor.
- Piezo_switch wikiPageWikiLink Stainless_steel.
- Piezo_switch wikiPageWikiLink Stress_(mechanics).
- Piezo_switch wikiPageWikiLink Switch.
- Piezo_switch wikiPageWikiLink Time_constant.
- Piezo_switch wikiPageWikiLink Vandalism.
- Piezo_switch wikiPageWikiLinkText "Piezo switch".
- Piezo_switch wikiPageWikiLinkText "Piezo".
- Piezo_switch wikiPageUsesTemplate Template:Reflist.
- Piezo_switch subject Category:Switches.
- Piezo_switch hypernym Switch.
- Piezo_switch type BaseballPlayer.
- Piezo_switch type Component.
- Piezo_switch type Switch.
- Piezo_switch comment "A piezo switch is an electrical switch based on the piezoelectric effect.The charge generated by the piezoelectric element in the switch is typically used to turn on an integrated semiconductor device such as a field effect transistor (FET), causing the switch assembly's output to be active, or \"on\". When the FET is on, current can flow through it as with a conventional metal contact-based switch.".
- Piezo_switch label "Piezo switch".
- Piezo_switch sameAs Q7193125.
- Piezo_switch sameAs m.04g23lk.
- Piezo_switch sameAs Q7193125.
- Piezo_switch wasDerivedFrom Piezo_switch?oldid=631123688.
- Piezo_switch isPrimaryTopicOf Piezo_switch.