A multi-frequency electrostatic excitation calibration device and a working method thereof

• Main Author: YAN MINFENG
• Format: Patent
• Language: Chinese; English
• Published: 11.12.2018
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

The invention discloses a multi-frequency point electrostatic excitation calibration device and a working method thereof. The apparatus comprises control means, D/A converter, power amplifier, Boost module, divider resistor network, A/D convert and electrostatic excitation protective cover, the electrostatic excitation protective cover includes an electrostatic excitation plate and a fixing mechanism for fixing the electrostatic excitation plate to the microphone, An electrostatic excitation protective cover is arranged on the top of the microphone, the control device is electrically connectedwith an input terminal of the D/A converter and an output terminal of the A/D converter, The output end of the D/A converter is electrically connected with the input end of the power amplifier, the output end of the power amplifier is electrically connected with the input end of the booster module, the output end of the booster module is electrically connected with the electrostatic excitation board, the input end of the