electret in a sentence
Examples
- Modern electret microphones use PTFE plastic, either in film or solute form, to form the electret.
- Electret ears would be pretty cool . talk ) 23 : 02, 8 August 2011 ( UTC)
- First patent on foil electret microphone by G . M . Sessler and J . E . West ( pages 1 to 3)
- Standard handset receivers functions normally when their polarity is reversed, but the electret microphone transmitter used in most modern handsets may not.
- An electret microphone is a type of condenser microphone, which eliminates the need for a power supply by using a permanently charged material.
- Electret microphones and condenser microphones employ electrostatics as the sound wave strikes the microphone's diaphragm, it moves and induces a voltage change.
- The polar molecules of the dielectric align themselves to the direction of the electrostatic field, producing a dipole electret with a permanent electrostatic'bias '.
- Cellular space charge electrets with internal bipolar charges at the voids provide a new class of electret materials, that mimic ferroelectrics, hence they are known as ferroelectrets.
- Some other sensitive designs measure the current generated by the flow of a non-corrosive ionic fluid through an electret sponge or a conductive fluid through a magnetic field.
- Can someone suggest a battery-powered circuit for amplifying the output of an electret mike to drive a headphone ( the type commonly used for portable media players )?