JPS55104105A - Temperature compensation circuit for crystal oscillation circuit - Google Patents
Temperature compensation circuit for crystal oscillation circuitInfo
- Publication number
- JPS55104105A JPS55104105A JP1197579A JP1197579A JPS55104105A JP S55104105 A JPS55104105 A JP S55104105A JP 1197579 A JP1197579 A JP 1197579A JP 1197579 A JP1197579 A JP 1197579A JP S55104105 A JPS55104105 A JP S55104105A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- compensation
- circuit
- response
- ambient temperature
- 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
Abstract
PURPOSE: To accurately perform the compensation each temperature without giving effect on others, by stepwise selection of the reactance element in response to ambient temperature through the connection of a plurality of compensation reactances every specified temperature to the crystal oscillation circuit.
CONSTITUTION: The voltage in response to the ambient temperature is outputted from the temperature voltage conversion circuit 20 and it is fed to one input of the comparators 211∼218. The reference voltage 221∼228 in different values are connected to another input of the comparators and only the comparator in response to the output value from the circuit 20 is outputted, and current flows through the resistor 18, switching element 16n and resistor 13, only the reactance element 15n connected to the comparator is coupled with the crystal oscillator 12 and the oscillation frequency is compensated within permissible range within a given range of ambient temperature. The elements 151∼158 of compensation are independent every temperature and the compensation for each point can accurately be made without giving effect to others, and the desired permissible deviation can easily be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1197579A JPS55104105A (en) | 1979-02-05 | 1979-02-05 | Temperature compensation circuit for crystal oscillation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1197579A JPS55104105A (en) | 1979-02-05 | 1979-02-05 | Temperature compensation circuit for crystal oscillation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55104105A true JPS55104105A (en) | 1980-08-09 |
Family
ID=11792597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1197579A Pending JPS55104105A (en) | 1979-02-05 | 1979-02-05 | Temperature compensation circuit for crystal oscillation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55104105A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6143069A (en) * | 1984-08-03 | 1986-03-01 | Usac Electronics Ind Co Ltd | Image reader |
| JPS6181207U (en) * | 1984-10-31 | 1986-05-29 | ||
| US5473289A (en) * | 1993-01-25 | 1995-12-05 | Matsushita Electric Industrial Co., Ltd. | Temperature compensated crystal oscillator |
| US7283008B2 (en) | 2003-03-28 | 2007-10-16 | Oki Electric Industry Co., Ltd. | Oscillator circuit with temperature compensation function |
-
1979
- 1979-02-05 JP JP1197579A patent/JPS55104105A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6143069A (en) * | 1984-08-03 | 1986-03-01 | Usac Electronics Ind Co Ltd | Image reader |
| JPS6181207U (en) * | 1984-10-31 | 1986-05-29 | ||
| JPH0349453Y2 (en) * | 1984-10-31 | 1991-10-22 | ||
| US5473289A (en) * | 1993-01-25 | 1995-12-05 | Matsushita Electric Industrial Co., Ltd. | Temperature compensated crystal oscillator |
| US7283008B2 (en) | 2003-03-28 | 2007-10-16 | Oki Electric Industry Co., Ltd. | Oscillator circuit with temperature compensation function |
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