Temperature compensation device of constant-temperature crystal oscillation circuit

• Main Author: MIAO CUIPING
• Format: Patent
• Language: Chinese; English
• Published: 12.09.2012
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; GENERATION OF NOISE BY SUCH CIRCUITS; GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER

The utility model discloses a temperature compensation device of a constant-temperature crystal oscillation circuit, which comprises a microprocessor, a voltage stabilizing circuit, an oscillator circuit, a heating circuit and an amplifying output circuit. A constant-temperature temperature sensor and an environment temperature sensor are respectively connected with the microprocessor; the voltage stabilizing circuit is respectively connected with the microprocessor and the oscillator circuit; a heating circuit and a heating circuit sensor are both connected with the microprocessor; and the oscillator circuit is connected with the amplifying output circuit. The temperature compensation technology is that based on the constant-temperature crystal oscillation circuit, the constant temperature of a crystal oscillator is controlled by the microprocessor and is changed according to the external environment temperature without influencing an oscillation return circuit.