JPH042937U - - Google Patents
Info
- Publication number
- JPH042937U JPH042937U JP4281190U JP4281190U JPH042937U JP H042937 U JPH042937 U JP H042937U JP 4281190 U JP4281190 U JP 4281190U JP 4281190 U JP4281190 U JP 4281190U JP H042937 U JPH042937 U JP H042937U
- Authority
- JP
- Japan
- Prior art keywords
- alarm
- comparator
- current detection
- reference value
- detection device
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Emergency Alarm Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の一実施例を示す過電流警報装
置のブロツク図である。
図中、１……商用電源、２……ブレーカー、３
ａ〜３ｃ……負荷、４……電流検出装置、５……
比較器、６……マイコン、７……警報手段（スピ
ーカー）、Ｒ１……固定抵抗、Ｒ２……可変抵抗
、Ｅ……直流電源。
FIG. 1 is a block diagram of an overcurrent alarm device showing one embodiment of the present invention. In the diagram, 1...commercial power supply, 2...breaker, 3
a to 3c...Load, 4...Current detection device, 5...
Comparator, 6...Microcomputer, 7...Alarm means (speaker), R1...Fixed resistance, R2...Variable resistance, E...DC power supply.
Claims (1)
られた電流検出装置と、同電流検出装置の出力レ
ベルを予め設定されている基準値と比較する比較
器と、同比較器よりの入力信号を処理するマイコ
ンと、同マイコンの出力信号により駆動される警
報手段とから成り、前記比較器により比較される
前記電流検出装置の出力レベルが前記基準値を越
えたとき前記警報手段から警報を発するようにし
て成ることを特徴とする過電流警報装置。 (2) 前記警報手段がスピーカーから成る過電流
警報装置。 (3) 前記比較器に入力される基準値を前記ブレ
ーカーの定格電流値内で可変できるようにして成
る請求項１記載の過電流警報装置。[Scope of claim for utility model registration] (1) A current detection device provided in the load connection circuit on the secondary side of the breaker, and a comparator that compares the output level of the current detection device with a preset reference value. , comprising a microcomputer that processes an input signal from the comparator, and an alarm means driven by the output signal of the microcomputer, when the output level of the current detection device compared by the comparator exceeds the reference value. An overcurrent alarm device characterized in that the alarm means issues an alarm when the alarm occurs. (2) An overcurrent alarm device in which the alarm means includes a speaker. (3) The overcurrent alarm device according to claim 1, wherein the reference value input to the comparator can be varied within the rated current value of the breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4281190U JPH042937U (en) | 1990-04-20 | 1990-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4281190U JPH042937U (en) | 1990-04-20 | 1990-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH042937U true JPH042937U (en) | 1992-01-10 |
Family
ID=31554678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4281190U Pending JPH042937U (en) | 1990-04-20 | 1990-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH042937U (en) |
-
1990
- 1990-04-20 JP JP4281190U patent/JPH042937U/ja active Pending
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