Sanmenxia where to where sell the wireless microphone Monopoly wholesale microphone also known as microphones, pickups, microphones, MIC, a sound energy is converted to electrical energy devices. According to the different structure, can be divided into the moving coil, crystal, ribbon, condenser, carbon particles and other kinds; generate voltage principle Jiaming Yang www.69139139.com 1399 +229 1503 +71780 +75 + Milan sun, Unit 2, Building 208, 631 Cheng * City market can be divided into two types, constant speed and constant amplitude type. Moving elements of the constant velocity microphone output voltage is proportional to its speed. When the intensity of the incident acoustic waves with voice frequency change, the moving speed of movement of the element in the use of the band is constant. Type of microphone, dynamic mics and ribbon microphones. Constant amplitude microphone output voltage proportional to the amplitude of the displacement of the moving element. When the intensity of the incident sound wave is constant, the displacement amplitude of the moving element is unchanged, its electromotive force generated in the use of the band unchanged. Kind of microphone, common crystal microphone and condenser microphone. Jiaming Yang 1503 +71780 +75 www.69139139.com 1399 +229 +631 Zheng * City Market Milan sun, Unit 2, Building 208 different microphone diaphragm force nature, can be divided into pressure-type differential pressure two classes. The moving element of the pressure microphone only side in contact with the acoustic contact with the other side is a constant atmospheric pressure in the closed box. In order to keep the cassette pressure is equal to the atmospheric pressure, the back of the cartridge to open a small hole to be balanced. Common moving coil, crystal, capacitive microphone belong to this category. Pressure-difference microphone, a moving element on both sides, and are subject to the role of the acoustic wave. Since the sound source is different from the both sides of the distance the acoustic waves spread to both sides of the time there are front and rear, causing the phase difference of the acoustic wave, which makes the sound waves by the instantaneous pressure on both sides of the moving element is not the same, and thus so that the occurrence of vibration. The ribbon microphone Common belong to this category. Communication equipment used to the type of microphone is generally crystal microphone and condenser microphone, will be used in a dedicated environment noisy or special occasions, such as directional, the throat vibration or Table Mounted products. The following discusses electrical indicators and the structure of these types of microphones. Piezoelectric crystal microphone, also known as the piezoelectric microphone, it is made of crystal piezoelectric effect, chemical materials potassium sodium tartrate and barium titanate crystals have a strong effect. When under pressure on both sides of the crystal, the sides between the positive and negative charges, generating an electromotive force in a certain direction: when the stress by the opposite direction, the crystal is produced on both sides with opposite charge pressure and the electromotive force. When the crystal by alternating the role of the sonic audio electromotive force. Jiaming Yang 1503 +71780 +75 www.69139139.com 1399 +229 +631 Milan sun, Zheng * City Market Building 5, Unit 2, 208