Розробка та схемотехнічне обґрунтування малогабаритного переговорного пристрою для систем контролю доступу

Abstract

The article considers the development and technical justification of the circuitry of a small-sized intercom device. The proposed device provides halfduplex loud-speaking communication over a two-wire line. The specific feature of the device is the use of dynamic heads as both sound emitters and microphones. The hardware integration of the device into access control systems with electromechanical and electromagnetic locks is considered. The mathematical calculation of the parametric voltage stabilizer parameters is presented.