JPS54126448A - Temperature compensating circuit of crystal oscillator - Google Patents
Temperature compensating circuit of crystal oscillatorInfo
- Publication number
- JPS54126448A JPS54126448A JP3431678A JP3431678A JPS54126448A JP S54126448 A JPS54126448 A JP S54126448A JP 3431678 A JP3431678 A JP 3431678A JP 3431678 A JP3431678 A JP 3431678A JP S54126448 A JPS54126448 A JP S54126448A
- Authority
- JP
- Japan
- Prior art keywords
- crystal oscillator
- voltage
- circuit
- curve
- linear
- 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 supply a high-precision compensation with a low cost in a short delivery time by generating an output voltage, which has a linear or curve gradient according to peripheral temperatures, to restrain oscillated frequency deviation to a fixed value.
CONSTITUTION: An output voltage which has a linear or curve gradient according to peripheral temperatures is generated by temperature/voltage converter 1 and is made of the input voltage of function circuit 2. Then, the compensating voltage approximating a desired compensation curve is generated in circuit 2 and is applied to variable capacity element 5 of crystal oscillator circuit 3, thereby restraining receiving frequency deviation to a fixed value. As a result, a high-precision compensation can be supplied with a low cost in a short delivery time.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3431678A JPS54126448A (en) | 1978-03-24 | 1978-03-24 | Temperature compensating circuit of crystal oscillator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3431678A JPS54126448A (en) | 1978-03-24 | 1978-03-24 | Temperature compensating circuit of crystal oscillator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54126448A true JPS54126448A (en) | 1979-10-01 |
Family
ID=12410748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3431678A Pending JPS54126448A (en) | 1978-03-24 | 1978-03-24 | Temperature compensating circuit of crystal oscillator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54126448A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62200920A (en) * | 1986-02-28 | 1987-09-04 | Toshiba Corp | Radio equipment |
JPS63136585A (en) * | 1986-11-27 | 1988-06-08 | Nippon Telegr & Teleph Corp <Ntt> | Automatic controller for optical output from semiconductor laser |
-
1978
- 1978-03-24 JP JP3431678A patent/JPS54126448A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62200920A (en) * | 1986-02-28 | 1987-09-04 | Toshiba Corp | Radio equipment |
JPS63136585A (en) * | 1986-11-27 | 1988-06-08 | Nippon Telegr & Teleph Corp <Ntt> | Automatic controller for optical output from semiconductor laser |
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