JPH03117927U - - Google Patents
Info
- Publication number
- JPH03117927U JPH03117927U JP2670990U JP2670990U JPH03117927U JP H03117927 U JPH03117927 U JP H03117927U JP 2670990 U JP2670990 U JP 2670990U JP 2670990 U JP2670990 U JP 2670990U JP H03117927 U JPH03117927 U JP H03117927U
- Authority
- JP
- Japan
- Prior art keywords
- wiring pattern
- output
- input
- circuit board
- printed circuit
- 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 description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Structure Of Printed Boards (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図ａは本考案の一実施例に回路素子（記号
で示す）を実装した状態の部分平面図、同図ｂは
その等価回路図、第２図ａは従来の発振回路用プ
リント基板の部分平面図、同図ｂは等価回路、第
３図は第１図ｂと第２図ｂの等価回路図の出力電
圧波形を示す図である。
１……入力配線パターン、２……出力配線パタ
ーン、３……ＧＮＤ配線パターン、４……ＣＭＯ
Ｓインバータ、５……帰還抵抗、６……水晶振動
子、７……コンデンサ、８……ガード配線パター
ン。
Fig. 1a is a partial plan view of an embodiment of the present invention in which circuit elements (indicated by symbols) are mounted, Fig. 1b is its equivalent circuit diagram, and Fig. 2a is a conventional printed circuit board for an oscillation circuit. FIG. 3 is a diagram showing the output voltage waveforms of the equivalent circuit diagrams of FIG. 1b and FIG. 2b. 1...Input wiring pattern, 2...Output wiring pattern, 3...GND wiring pattern, 4...CMO
S inverter, 5... feedback resistor, 6... crystal oscillator, 7... capacitor, 8... guard wiring pattern.
Claims (1)
抗と水晶振動子を接続し、前記インバータの入力
及び出力とＧＮＤ間にコンデンサを接続して発振
回路を構成する際に使用されるプリント基板にお
いて、前記入力端子が接続される入力配線パター
ンが、前記出力端子が接続される出力配線パター
ンに導電接続されているガード配線パターンで囲
まれていることを特徴とするＣＭＯＳ発振回路用
プリント基板。 In a printed circuit board used when configuring an oscillation circuit by connecting a feedback resistor and a crystal resonator between the input and output terminals of a CMOS inverter, and connecting a capacitor between the input and output of the inverter and GND, A printed circuit board for a CMOS oscillation circuit, characterized in that an input wiring pattern to which a terminal is connected is surrounded by a guard wiring pattern that is conductively connected to an output wiring pattern to which the output terminal is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2670990U JPH03117927U (en) | 1990-03-15 | 1990-03-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2670990U JPH03117927U (en) | 1990-03-15 | 1990-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03117927U true JPH03117927U (en) | 1991-12-05 |
Family
ID=31529590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2670990U Pending JPH03117927U (en) | 1990-03-15 | 1990-03-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03117927U (en) |
-
1990
- 1990-03-15 JP JP2670990U patent/JPH03117927U/ja active Pending
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