Patent ID: 7023291
Filing Date: 2006-04-04
Classification: G05D,H03B,H05K

Abstract:
1. A crystal oscillator for high stability using a thermostat, comprising; a thermostat mainframe which maintains the temperature of a crystal resonator housed in a resonator container in which is sealed a crystal piece constant, an oscillating element which constitutes an oscillation circuit together with said crystal resonator, a temperature control element which controls the temperature inside of said thermostat mainframe, and a circuit board mounted with said thermostat mainframe, said oscillating element, and said temperature control element, wherein a heat generating chip resistor and a highly heat sensitive element having a higher temperature dependency, among said oscillating element and said temperature control element, are arranged on one principal plane of said circuit board, and said heat generating chip resistor, said highly heat sensitive element, and said thermostat mainframe are directly heat bonded by a thermo-conductive material.