ROOM TEMPERATURE THERMOSTAT CONTROL CRYSTAL OSCILLATOR AND CONTROLLING METHOD THEREOF

摘要

PURPOSE: A room temperature thermostat control crystal oscillator and a method for controlling the same are provided to minimize a secular change rate and a thermal hysteresis and easily control a temperature. CONSTITUTION: A lower thermoelement(5) is attached to an inner lower side of a room temperature thermostat(4). A temperature detector uses a small IC which has a temperature sensor for detecting a temperature of the center of both side teflons(6). A crystal vibrator(8) is mounted on a substrate(9) and outputs an exact and stable frequency signal. An oscillator regulator is installed at an outer portion of the room temperature thermostat(4) and supplies a constant voltage to a crystal oscillator. An SoC regulator is mounted on a substrate(14) of a switching circuit and supplies a constant voltage to an SoC.