JPS6253810U - - Google Patents
Info
- Publication number
- JPS6253810U JPS6253810U JP14464485U JP14464485U JPS6253810U JP S6253810 U JPS6253810 U JP S6253810U JP 14464485 U JP14464485 U JP 14464485U JP 14464485 U JP14464485 U JP 14464485U JP S6253810 U JPS6253810 U JP S6253810U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation circuit
- input impedance
- oscillation
- switching
- variable
- 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
- 230000010355 oscillation Effects 0.000 claims 12
- 238000010586 diagram Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図は、本考案の一実施例を示す回路ブロツ
ク図、及び第２図はその具体回路例を示す回路図
である。
主な図番の説明、１……水晶振動子、２……第
１増幅回路、３……第２増幅回路、４……第１抵
抗、５……第２抵抗、６……インピーダンス切換
スイツチ。
FIG. 1 is a circuit block diagram showing one embodiment of the present invention, and FIG. 2 is a circuit diagram showing a specific example of the circuit. Explanation of main drawing numbers, 1... Crystal resonator, 2... First amplifier circuit, 3... Second amplifier circuit, 4... First resistor, 5... Second resistor, 6... Impedance selection switch .
Claims (1)
型の発振回路と発振周波数可変型の発振回路とに
切換使用可能な発振回路において、前記発振回路
を前記固定型の発振回路として使用する時前起記
発振回路の入力インピーダンスを低く、前記可変
型の発振回路として使用する時前記発振回路の入
力インピーダンスを高く切換える入力インピーダ
ンス切換手段を設けたことを特徴とする発振回路
。 In an oscillation circuit that can be switched between a fixed oscillation frequency type oscillation circuit and a variable oscillation frequency type oscillation circuit by switching the mode, when the oscillation circuit is used as the fixed oscillation circuit, An oscillation circuit characterized in that an oscillation circuit is provided with an input impedance switching means for switching the input impedance of the oscillation circuit to a low value and the input impedance of the oscillation circuit to a high value when used as the variable type oscillation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14464485U JPS6253810U (en) | 1985-09-20 | 1985-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14464485U JPS6253810U (en) | 1985-09-20 | 1985-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6253810U true JPS6253810U (en) | 1987-04-03 |
Family
ID=31055438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14464485U Pending JPS6253810U (en) | 1985-09-20 | 1985-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6253810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62209907A (en) * | 1986-03-11 | 1987-09-16 | Sony Corp | Crystal oscillating circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5821509A (en) * | 1981-08-01 | 1983-02-08 | Asahi Optical Co Ltd | Optical system in optical wave distance measuring meter |
-
1985
- 1985-09-20 JP JP14464485U patent/JPS6253810U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5821509A (en) * | 1981-08-01 | 1983-02-08 | Asahi Optical Co Ltd | Optical system in optical wave distance measuring meter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62209907A (en) * | 1986-03-11 | 1987-09-16 | Sony Corp | Crystal oscillating circuit |
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