JPH034273U - - Google Patents
Info
- Publication number
- JPH034273U JPH034273U JP6322489U JP6322489U JPH034273U JP H034273 U JPH034273 U JP H034273U JP 6322489 U JP6322489 U JP 6322489U JP 6322489 U JP6322489 U JP 6322489U JP H034273 U JPH034273 U JP H034273U
- Authority
- JP
- Japan
- Prior art keywords
- latch circuit
- comparator
- display element
- threshold value
- power supply
- 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
- 239000004020 conductor Substances 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図はこの考案の一実施例を示す構成図、第
２図はこの考案の他の実施例を示す構成図、第３
図は従来のノイズレベル検出装置の使用状態を示
す外観図である。
４……プローブ、４ａ……接地端子、１１……
コンパレータ、１２……可変抵抗器（閾値設定器
）、１３……ラツチ回路、１４……発光ダイオー
ド（表示素子）、１６……電池（直流電源）、１
７……導体ケース、−……比較端子、＋……基準
端子、Ｎ……ノイズ信号、Ｔ……閾値。尚、図中
、同一符号は同一又は相当部分を示す。
Fig. 1 is a block diagram showing one embodiment of this invention, Fig. 2 is a block diagram showing another embodiment of this invention, and Fig. 3 is a block diagram showing another embodiment of this invention.
The figure is an external view showing how a conventional noise level detection device is used. 4... Probe, 4a... Ground terminal, 11...
Comparator, 12... Variable resistor (threshold value setter), 13... Latch circuit, 14... Light emitting diode (display element), 16... Battery (DC power supply), 1
7...Conductor case, -...Comparison terminal, +...Reference terminal, N...Noise signal, T...Threshold value. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (1)
レータと、 このコンパレータの基準端子に入力される閾値
を設定する閾値設定器と、 前記コンパレータからの比較出力を保持するラ
ツチ回路と、 前記ラツチ回路の出力により駆動される表示素
子と、 前記表示素子に給電する直流電源と、 前記プローブの接地端子に接続され、且つ前記
コンパレータ、前記閾値設定器、前記ラツチ回路
、前記表示素子及び前記直流電源を覆う導体ケー
スと、 この導体ケースを覆う透明絶縁膜と、 を備えたノイズレベル検出装置。[Claims for Utility Model Registration] A probe that receives a noise signal, a comparator to which the noise signal is input to a comparison terminal, a threshold value setter to set a threshold value to be input to a reference terminal of the comparator, and from the comparator. a latch circuit that holds a comparative output of the latch circuit; a display element driven by the output of the latch circuit; a DC power supply that supplies power to the display element; , a conductor case that covers the latch circuit, the display element, and the DC power supply; and a transparent insulating film that covers the conductor case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6322489U JPH034273U (en) | 1989-06-01 | 1989-06-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6322489U JPH034273U (en) | 1989-06-01 | 1989-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH034273U true JPH034273U (en) | 1991-01-17 |
Family
ID=31593083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6322489U Pending JPH034273U (en) | 1989-06-01 | 1989-06-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH034273U (en) |
-
1989
- 1989-06-01 JP JP6322489U patent/JPH034273U/ja active Pending
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