JPS55158706A - Temperature compensating crystal oscillator - Google Patents
Temperature compensating crystal oscillatorInfo
- Publication number
- JPS55158706A JPS55158706A JP6597579A JP6597579A JPS55158706A JP S55158706 A JPS55158706 A JP S55158706A JP 6597579 A JP6597579 A JP 6597579A JP 6597579 A JP6597579 A JP 6597579A JP S55158706 A JPS55158706 A JP S55158706A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- resistance
- temperature
- capacitors
- crystal oscillator
- 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 title abstract 2
- 239000003990 capacitor Substances 0.000 abstract 6
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
- H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
- H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
PURPOSE:To ensure the compensation over a wide temperature range and thus to realize the improvement for the temperature characteristics, connecting several capacitors of different temperature coefficients to the MOS inverter functioning as the oscillating active element and via the gate circuit which is controlled according to the temperature. CONSTITUTION:Bias resistance 2 is connected between the input and the output of amplifier 1, and furthermore the serial circuit of crystal oscillator 3 and trimmer capacitor 4 is connected in parallel to amplifier 1. On the other hand, the capacitor 6 is connected between the output side and the ground, and then capacitors 5 and 5' are connected to the input side via gate circuits 7 and 7'. The different temperature coefficients are secured between capacitors 5 and 5', and output signal Vout of Schmitt circuit 10 is applied to circuit 7 via inverter 11 along with the direct connection to circuit 7' each. Then the serial circuit of resistance 8 and semifixed resistance 9 is connected to circuit 10, and the temperature coefficients are set for resistance 9 plus capacitors 5 and 5' each. Then circuits 7 and 7' are selected in accordance with the temperature detected by resistance 8. Thus the temperature characteristics of the oscillating circuit is compensated over a wide range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6597579A JPS55158706A (en) | 1979-05-28 | 1979-05-28 | Temperature compensating crystal oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6597579A JPS55158706A (en) | 1979-05-28 | 1979-05-28 | Temperature compensating crystal oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55158706A true JPS55158706A (en) | 1980-12-10 |
Family
ID=13302502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6597579A Pending JPS55158706A (en) | 1979-05-28 | 1979-05-28 | Temperature compensating crystal oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55158706A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60227741A (en) * | 1984-04-26 | 1985-11-13 | 株式会社島津製作所 | Ultrasonic diagnostic apparatus |
| JPH0799411A (en) * | 1993-09-28 | 1995-04-11 | Japan Radio Co Ltd | Crystal oscillation circuit |
-
1979
- 1979-05-28 JP JP6597579A patent/JPS55158706A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60227741A (en) * | 1984-04-26 | 1985-11-13 | 株式会社島津製作所 | Ultrasonic diagnostic apparatus |
| JPH0799411A (en) * | 1993-09-28 | 1995-04-11 | Japan Radio Co Ltd | Crystal oscillation circuit |
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