JPH02815U - - Google Patents
Info
- Publication number
- JPH02815U JPH02815U JP7749388U JP7749388U JPH02815U JP H02815 U JPH02815 U JP H02815U JP 7749388 U JP7749388 U JP 7749388U JP 7749388 U JP7749388 U JP 7749388U JP H02815 U JPH02815 U JP H02815U
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- frequency
- circuit board
- crystal oscillator
- crystal resonator
- 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.)
- Granted
Links
- 239000013078 crystal Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- NIJJYAXOARWZEE-UHFFFAOYSA-N Valproic acid Chemical compound CCCC(C(O)=O)CCC NIJJYAXOARWZEE-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は本考案に係るＰＥＡＣ素子の容量―電圧特性を
示す図、第３図、第５図は従来技術による回路図
、第４図、第６図は従来の回路における温度補償
の動作を示す特性図である。
１，３，４，５……抵抗、２……サーミスタ、
６……ＰＥＡＣ素子、７，１１……コンデンサ、
８……ＣＭＯＳインバータ、９……帰還抵抗、１
０……水晶振動子。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing the capacitance-voltage characteristics of a PEAC element according to the present invention, FIGS. 3 and 5 are circuit diagrams according to the prior art, and FIG. 4 , FIG. 6 is a characteristic diagram showing the operation of temperature compensation in a conventional circuit. 1, 3, 4, 5...Resistor, 2...Thermistor,
6... PEAC element, 7, 11... Capacitor,
8...CMOS inverter, 9...Feedback resistor, 1
0...Crystal oscillator.
Claims (1)
素子を回路基板上に設けた温度補償型水晶発振器
において、前記素子に印加される電圧を、前記水
晶振動子の周波数温度特性の正負に応じて、前記
回路基板上の配線を択一的に切断することによつ
て選択することを特徴とする温度補償型水晶発振
器。 In a temperature-compensated crystal oscillator in which a crystal resonator and an element for correcting its frequency-temperature characteristics are provided on a circuit board, the voltage applied to the element is controlled depending on the positive or negative of the frequency-temperature characteristic of the crystal resonator. A temperature compensated crystal oscillator characterized in that selection is made by selectively cutting wiring on the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7749388U JPH075695Y2 (en) | 1988-06-10 | 1988-06-10 | Temperature compensated crystal oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7749388U JPH075695Y2 (en) | 1988-06-10 | 1988-06-10 | Temperature compensated crystal oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02815U true JPH02815U (en) | 1990-01-05 |
| JPH075695Y2 JPH075695Y2 (en) | 1995-02-08 |
Family
ID=31302476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7749388U Expired - Lifetime JPH075695Y2 (en) | 1988-06-10 | 1988-06-10 | Temperature compensated crystal oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075695Y2 (en) |
-
1988
- 1988-06-10 JP JP7749388U patent/JPH075695Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH075695Y2 (en) | 1995-02-08 |
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