JPS6444106A - Moisture resistance crystal oscillation circuit - Google Patents
Moisture resistance crystal oscillation circuitInfo
- Publication number
- JPS6444106A JPS6444106A JP20071587A JP20071587A JPS6444106A JP S6444106 A JPS6444106 A JP S6444106A JP 20071587 A JP20071587 A JP 20071587A JP 20071587 A JP20071587 A JP 20071587A JP S6444106 A JPS6444106 A JP S6444106A
- Authority
- JP
- Japan
- Prior art keywords
- inverter
- feedback
- negative feedback
- frequency region
- region
- 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
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE:To attain stable oscillation even under high moisture by using a low- pass filter circuit giving a prescribed feedback quantity in a DC region and suppressing feedback in the oscillated frequency region as a negative feedback circuit of an inverter. CONSTITUTION:A low-pass filter circuit as the negative feedback circuit is provided between the input and output of an inverter Q. Then a DC bias voltage is impressed to the input through feedback resistors R1, R2 and a bias voltage is set so as to keep the highest gain for a linear amplifier in the transfer region. Moreover, the gain of the inverter Q as the linear amplifier is lowered at DC and low frequency regions but the operation is stabilized by the negative feedback. On the other hand, the component in the output of the inverter Q in the oscillated frequency region is suppressed and blocked by a filter capacitor C3 and the component of said oscillating frequency region is not fed back to the input. Since the gain of the inverter Q is not lowered due to the negative feedback in the oscillation frequency region, stable oscillation is attained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20071587A JPS6444106A (en) | 1987-08-11 | 1987-08-11 | Moisture resistance crystal oscillation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20071587A JPS6444106A (en) | 1987-08-11 | 1987-08-11 | Moisture resistance crystal oscillation circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6444106A true JPS6444106A (en) | 1989-02-16 |
Family
ID=16429007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20071587A Pending JPS6444106A (en) | 1987-08-11 | 1987-08-11 | Moisture resistance crystal oscillation circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6444106A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001003352A1 (en) * | 1999-07-05 | 2001-01-11 | Jamming Electronic Co., Ltd. | Jammer |
KR100432933B1 (en) * | 2000-10-27 | 2004-05-28 | 니폰 프리시젼 서키츠 가부시키가이샤 | Oscillator circuit and integrated circuit for oscillation |
US7948329B2 (en) | 2008-05-06 | 2011-05-24 | Chartered Semiconductor Manufacturing, Ltd. | Oscillator gain circuit and method |
-
1987
- 1987-08-11 JP JP20071587A patent/JPS6444106A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001003352A1 (en) * | 1999-07-05 | 2001-01-11 | Jamming Electronic Co., Ltd. | Jammer |
KR100432933B1 (en) * | 2000-10-27 | 2004-05-28 | 니폰 프리시젼 서키츠 가부시키가이샤 | Oscillator circuit and integrated circuit for oscillation |
US7948329B2 (en) | 2008-05-06 | 2011-05-24 | Chartered Semiconductor Manufacturing, Ltd. | Oscillator gain circuit and method |
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