JPS62161411U - - Google Patents
Info
- Publication number
- JPS62161411U JPS62161411U JP5062186U JP5062186U JPS62161411U JP S62161411 U JPS62161411 U JP S62161411U JP 5062186 U JP5062186 U JP 5062186U JP 5062186 U JP5062186 U JP 5062186U JP S62161411 U JPS62161411 U JP S62161411U
- Authority
- JP
- Japan
- Prior art keywords
- output
- temperature
- converter
- read
- memory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000010355 oscillation Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図は本考案の一実施例の回路構成を示すブ
ロツク図である。第２図は従来の電圧制御形圧電
発振器の一例を示す回路図である。第３図は発振
周波数の可変範囲を広げた発振用帰還回路の一部
を示す回路図である。第４図は従来の電圧制御形
圧電発振器の周波数温度特性を示す曲線図である
。第５図は第１図の実施例の周波数温度特性の一
例を示す曲線図である。
１…周囲温度検出器、２…Ａ／Ｄ変換器、３…
読出し専用メモリ、４…Ｄ／Ａ変換器、５，１５
…水晶共振子、６，１６…可変容量ダイオード、
７…インダクタンス、８，１８…トランジスタ、
９，１９，２０…抵抗。
FIG. 1 is a block diagram showing the circuit configuration of an embodiment of the present invention. FIG. 2 is a circuit diagram showing an example of a conventional voltage-controlled piezoelectric oscillator. FIG. 3 is a circuit diagram showing a part of the oscillation feedback circuit in which the variable range of the oscillation frequency is widened. FIG. 4 is a curve diagram showing frequency-temperature characteristics of a conventional voltage-controlled piezoelectric oscillator. FIG. 5 is a curve diagram showing an example of frequency-temperature characteristics of the embodiment shown in FIG. 1...Ambient temperature detector, 2...A/D converter, 3...
Read-only memory, 4...D/A converter, 5, 15
...Crystal resonator, 6, 16...Variable capacitance diode,
7... Inductance, 8, 18... Transistor,
9, 19, 20...Resistance.
Claims (1)
ードを含む帰還回路を有する電圧制御形圧電発振
器において、温度変化に対する発振周波数の変化
を補償するため、前記可変容量ダイオードに加え
る電圧を、周囲温度を検出する温度検出器と、前
記温度検出器の出力をデジタル信号に変換するＡ
／Ｄ変換器と、前記Ａ／Ｄ変換器出力にもとづい
て、あらかじめ記憶されているデジタル信号を出
力する読出し専用メモリと、前記読出し専用メモ
リ出力をアナログ信号に変換し、その出力を前記
可変容量ダイオードに与えるＤ／Ａ変換器とから
なる温度補償用制御電圧発生回路を有することを
特徴とする電圧制御形圧電発振器。 In a voltage-controlled piezoelectric oscillator that has a feedback circuit including a piezoelectric resonator, an inductance, and a variable capacitance diode, in order to compensate for changes in oscillation frequency due to temperature changes, the voltage applied to the variable capacitance diode is controlled by temperature detection that detects the ambient temperature. and A for converting the output of the temperature sensor into a digital signal.
a /D converter, a read-only memory that outputs a pre-stored digital signal based on the output of the A/D converter, and a read-only memory that converts the output of the read-only memory into an analog signal and transmits the output to the variable capacitor. 1. A voltage-controlled piezoelectric oscillator comprising a temperature-compensating control voltage generation circuit comprising a D/A converter applied to a diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5062186U JPS62161411U (en) | 1986-04-04 | 1986-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5062186U JPS62161411U (en) | 1986-04-04 | 1986-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62161411U true JPS62161411U (en) | 1987-10-14 |
Family
ID=30874148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5062186U Pending JPS62161411U (en) | 1986-04-04 | 1986-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62161411U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01142909A (en) * | 1987-11-30 | 1989-06-05 | Yokogawa Electric Corp | Voltage reference circuit |
| JPH02146805A (en) * | 1988-11-28 | 1990-06-06 | Nec Corp | Constant temperature oven type piezoelectric oscillator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55118207A (en) * | 1979-03-05 | 1980-09-11 | Toshiba Corp | Non-linear type characteristic compensation system |
| JPS58184809A (en) * | 1982-04-22 | 1983-10-28 | Nippon Telegr & Teleph Corp <Ntt> | Frequency controlling method of digital control type temperature compensated crystal oscillator |
| JPS60149223A (en) * | 1984-01-17 | 1985-08-06 | Yaesu Musen Co Ltd | Temperature-frequency characteristic correcting method |
-
1986
- 1986-04-04 JP JP5062186U patent/JPS62161411U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55118207A (en) * | 1979-03-05 | 1980-09-11 | Toshiba Corp | Non-linear type characteristic compensation system |
| JPS58184809A (en) * | 1982-04-22 | 1983-10-28 | Nippon Telegr & Teleph Corp <Ntt> | Frequency controlling method of digital control type temperature compensated crystal oscillator |
| JPS60149223A (en) * | 1984-01-17 | 1985-08-06 | Yaesu Musen Co Ltd | Temperature-frequency characteristic correcting method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01142909A (en) * | 1987-11-30 | 1989-06-05 | Yokogawa Electric Corp | Voltage reference circuit |
| JPH02146805A (en) * | 1988-11-28 | 1990-06-06 | Nec Corp | Constant temperature oven type piezoelectric oscillator |