JPS60120366U - noise meter - Google Patents
noise meterInfo
- Publication number
- JPS60120366U JPS60120366U JP550984U JP550984U JPS60120366U JP S60120366 U JPS60120366 U JP S60120366U JP 550984 U JP550984 U JP 550984U JP 550984 U JP550984 U JP 550984U JP S60120366 U JPS60120366 U JP S60120366U
- Authority
- JP
- Japan
- Prior art keywords
- level
- resistor
- reference level
- time constant
- outputs
- 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
- Measurement Of Current Or Voltage (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例のレベル検出回路のブロック
図、第２図は第１図における各点の信号を示す波形図で
ある。
３・・・比較回路、４・・・可変抵抗器、５・・・ＡＮ
Ｄ回路、６・・・時定数回路、８・・・音響発生手段、
１０・・・発光表示手段。FIG. 1 is a block diagram of a level detection circuit according to an embodiment of the present invention, and FIG. 2 is a waveform diagram showing signals at each point in FIG. 3... Comparison circuit, 4... Variable resistor, 5... AN
D circuit, 6... time constant circuit, 8... sound generating means,
10... Luminous display means.
Claims (1)
たレベルと基準レベルとを比較し、前記基準レベルまた
は入力されたレベルのいずれか一方が大きいとき、ハイ
レベルの信号を出力し、いずれか他方が大きいときロー
レベルの信号を出力する比較手段と、 比較手段からの出力に並列に接続されており、抵抗と、
その抵抗に直列に接続されたコンデンサとを含む時定数
回路と、 比較回路の出力と、時定数回路の抵抗とコンデンサの接
続点との論理演算を行なうゲートを含むことを特徴とす
るレベル検出回路。[Claims for Utility Model Registration] A reference level setting means for setting a reference level compares the input level with the reference level, and when either the reference level or the input level is larger, the high level is set. A comparison means that outputs a signal and outputs a low level signal when either one is larger; and a resistor connected in parallel to the output from the comparison means;
A level detection circuit comprising: a time constant circuit including a capacitor connected in series with the resistor; and a gate that performs a logical operation between the output of the comparison circuit and the connection point between the resistor and the capacitor of the time constant circuit. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP550984U JPS60120366U (en) | 1984-01-18 | 1984-01-18 | noise meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP550984U JPS60120366U (en) | 1984-01-18 | 1984-01-18 | noise meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60120366U true JPS60120366U (en) | 1985-08-14 |
Family
ID=30482076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP550984U Pending JPS60120366U (en) | 1984-01-18 | 1984-01-18 | noise meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60120366U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5515855B1 (en) * | 1979-09-17 | 1980-04-26 | ||
| JPS5551647B2 (en) * | 1975-03-15 | 1980-12-25 |
-
1984
- 1984-01-18 JP JP550984U patent/JPS60120366U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5551647B2 (en) * | 1975-03-15 | 1980-12-25 | ||
| JPS5515855B1 (en) * | 1979-09-17 | 1980-04-26 |
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