amplifier

Examples of amplifier in the following topics:

• Sound Systems, Computer Memory, Seismograph, GFCI

  • That "signal" is then transmitted to an amplifier and then to a speaker.
  • The speaker is then driven by modulated electrical currents (produced by an amplifier) that pass through and magnetize (by inductance) a speaker coil of copper wire, creating a magnetic field.
  • Thus, the electrical current variations that pass through the speaker are converted to varying magnetic forces, which move the speaker diaphragm, forcing the driver to produce air motion that is similar to the original signal from the amplifier.

• Microwaves

  • A maser is a device similar to a laser, which amplifies light energy by stimulating photons.
  • The maser, rather than amplifying visible light energy, amplifies the lower-frequency, longer-wavelength microwaves and radio frequency emissions.

• Lasers

  • Since there was only one incoming photon, we amplified the intensity of light by a factor of 2!

• Spherical and Plane Waves

  • Constructive interference occurs when waves are completely in phase with each other and amplifies the waves.

• Antennae

  • This voltage is applied to a receiver to be amplified.

• Lasers

  • A single photon can bounce back and forth between the mirrors many times, passing through the gain medium and being amplified each time.

• The Ear

  • Therefore, when the outer part of the ear collects sound and the middle ear amplifies this sound pressure, these processes occur in the medium of air.

• Measurements: Gauge Pressure and the Barometer

  • This expansion and contraction is amplified by mechanical mechanisms to give a pressure reading.

• Young's Double Slit Experiment

  • This amplifies the resultant wave.

• Standing Waves on a String

  • As discussed in previous atoms, when waves are completely in phase and interfere with each other constructively they are amplified, and when they are completely out of phase and interfere destructively they cancel out.