JPS59174709U

JPS59174709U - Command-controlled crystal oscillator with constant temperature oven

Info

Publication number: JPS59174709U
Application number: JP6722183U
Authority: JP
Inventors: 国藤　健一
Original assignee: 日本電気株式会社
Priority date: 1983-05-04
Filing date: 1983-05-04
Publication date: 1984-11-21

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は通常の水晶発振器の回路図、第２図は長期周波
数安定度の特性図、第３図はコマンド制御が可能な様に
した本考案に係る水晶全振器の一実施例を示す回路構成
図、第４図はコマンド制御回路内で使用するＤ／Ａ変換
器の回路構成図、第５図は水晶振動子とスイッチング用
ダイオードを設、置した本考案に係る恒温槽の一実施例
を示す断面図、第６図はＤ／Ａ変換器の出力電圧の温度
特性図、第７図は恒温種付コラノド制御型水晶発振器の
周波数温度特性図である。１・・・水晶振動子、２．　２２．　２３・・・トラン
ジスタ、３・・・トリマ、４〜７．１８．１９・・・コ
ンデンサ、８〜Ｉｆ、２Ｇ、２９〜３８−・・抵抗、１
２゜４１・・・出力端子、１３．１４・・・電源端子、
１５・・・長期周波数安定度の例、１６・・・要求値、
１７゜２４〜２７・・・ダイオード、”２１・・・電圧
入力端子、２８・・・演算増幅器、３９〜４０・・・パ
ルス入力端子、４２・・・電源入力端子、４３・・・発
熱体、４４・・・ケース、４５・・・積層配線基板、４
６・・・支持棒、４７・・・支持台、４８・・・温度検
出器、４９・・・断熱槽、５０゜５１・・・出力電圧の
温度特性の例、５２．５３・・・周波数温度安定度の例
。１９１４２　　　　　　乙！第４図４５　　　　　４８　　　　　４３Fig. 1 shows a circuit diagram of a normal crystal oscillator, Fig. 2 shows a characteristic diagram of long-term frequency stability, and Fig. 3 shows an embodiment of a crystal oscillator according to the present invention that enables command control. Figure 4 is a circuit configuration diagram of a D/A converter used in the command control circuit, and Figure 5 is an implementation of a thermostat according to the present invention in which a crystal resonator and switching diode are installed. FIG. 6 is a sectional view showing an example, FIG. 6 is a temperature characteristic diagram of the output voltage of a D/A converter, and FIG. 7 is a frequency temperature characteristic diagram of a constant-temperature seeded Coranode controlled crystal oscillator. 1...Crystal resonator, 2. 22. 23...Transistor, 3...Trimmer, 4-7.18.19...Capacitor, 8-If, 2G, 29-38-...Resistor, 1
2゜41...Output terminal, 13.14...Power terminal,
15...Example of long-term frequency stability, 16...Required value,
17゜24-27...Diode, 21...Voltage input terminal, 28...Operation amplifier, 39-40...Pulse input terminal, 42...Power input terminal, 43...Heating element , 44... Case, 45... Laminated wiring board, 4
6...Support rod, 47...Support stand, 48...Temperature detector, 49...Insulation tank, 50°51...Example of temperature characteristics of output voltage, 52.53...Frequency Example of temperature stability. 19142 Otsu! Figure 4 45 48 43

Claims

[Scope of utility model registration request]

(1) A D/A converter consisting of an operational amplifier, a switching diode, and a resistor network, characterized in that the switching diode is installed in a thermostatic chamber used to maintain a constant operating temperature of the crystal resonator. A command-controlled crystal oscillator with a thermostat.