JPH0412708U - - Google Patents
Info
- Publication number
- JPH0412708U JPH0412708U JP5270890U JP5270890U JPH0412708U JP H0412708 U JPH0412708 U JP H0412708U JP 5270890 U JP5270890 U JP 5270890U JP 5270890 U JP5270890 U JP 5270890U JP H0412708 U JPH0412708 U JP H0412708U
- Authority
- JP
- Japan
- Prior art keywords
- inverter
- crystal oscillator
- controlled
- input
- output
- 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
- 239000013078 crystal Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図は本考案の一実施例の発振回路を示す回
路図、第２図は本考案による発振器と従来の発振
器の制御電圧の変化に対する周波数変化率を示す
グラフ、第３図は従来の電圧制御水晶発振器の一
例を示す回路図、第４図は従来の電圧制御水晶発
振器の他の一例を示す回路図である。
２１……インバータ、２２……水晶振動子、２
３……帰還抵抗、２５，２７……可変容量ダイオ
ード。
Fig. 1 is a circuit diagram showing an oscillation circuit according to an embodiment of the present invention, Fig. 2 is a graph showing the frequency change rate with respect to change in control voltage of the oscillator according to the present invention and a conventional oscillator, and Fig. 3 is a graph showing the frequency change rate of the oscillator according to the present invention and a conventional oscillator. FIG. 4 is a circuit diagram showing an example of a controlled crystal oscillator. FIG. 4 is a circuit diagram showing another example of a conventional voltage controlled crystal oscillator. 21...Inverter, 22...Crystal resonator, 2
3... Feedback resistor, 25, 27... Variable capacitance diode.
Claims (1)
帰還抵抗を接続した水晶発振器において、 上記インバータの入力と基準電位との間に介挿
され制御電圧によつて容量を制御される第１の可
変容量ダイオードと、 上記インバータの出力と基準電位との間に介挿
され制御電圧によつて容量を制御される第２の可
変容量ダイオードと、 を具備することを特徴とする電圧制御水晶発振器
。[Claims for Utility Model Registration] In a crystal oscillator in which a crystal oscillator and a feedback resistor are connected between the input and output of an inverter, the capacitance is increased by a control voltage that is inserted between the input of the inverter and a reference potential. A first variable capacitance diode that is controlled; and a second variable capacitance diode that is inserted between the output of the inverter and a reference potential and whose capacitance is controlled by a control voltage. voltage controlled crystal oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5270890U JPH0412708U (en) | 1990-05-21 | 1990-05-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5270890U JPH0412708U (en) | 1990-05-21 | 1990-05-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0412708U true JPH0412708U (en) | 1992-01-31 |
Family
ID=31573242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5270890U Pending JPH0412708U (en) | 1990-05-21 | 1990-05-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0412708U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006135739A (en) * | 2004-11-08 | 2006-05-25 | New Japan Radio Co Ltd | Voltage controlled crystal oscillation circuit |
| JP2008072553A (en) * | 2006-09-15 | 2008-03-27 | Seiko Npc Corp | Voltage controlled crystal oscillator |
-
1990
- 1990-05-21 JP JP5270890U patent/JPH0412708U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006135739A (en) * | 2004-11-08 | 2006-05-25 | New Japan Radio Co Ltd | Voltage controlled crystal oscillation circuit |
| JP2008072553A (en) * | 2006-09-15 | 2008-03-27 | Seiko Npc Corp | Voltage controlled crystal oscillator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0412708U (en) | ||
| JPS62181017U (en) | ||
| JPH04179306A (en) | Voltage controlled oscillation circuit | |
| JPS63113309U (en) | ||
| JPH0522969Y2 (en) | ||
| JPH0471015U (en) | ||
| JPS62161412U (en) | ||
| JPH0366223U (en) | ||
| JPH0398513U (en) | ||
| JPH03105018U (en) | ||
| JPH0353016U (en) | ||
| JPS61195105U (en) | ||
| JPS587684Y2 (en) | piezoelectric oscillator | |
| JPS6193014U (en) | ||
| JPH0338912U (en) | ||
| JPH0344911U (en) | ||
| JPH0425307U (en) | ||
| JPS63159915U (en) | ||
| JPH0346215U (en) | ||
| JPH0186708U (en) | ||
| JPS6052712U (en) | Pulse operated microwave semiconductor oscillator | |
| JPH0344912U (en) | ||
| JPH02138920U (en) | ||
| JPS63140742U (en) | ||
| JPS6251811U (en) |