JPH0332381U - - Google Patents
Info
- Publication number
- JPH0332381U JPH0332381U JP9177789U JP9177789U JPH0332381U JP H0332381 U JPH0332381 U JP H0332381U JP 9177789 U JP9177789 U JP 9177789U JP 9177789 U JP9177789 U JP 9177789U JP H0332381 U JPH0332381 U JP H0332381U
- Authority
- JP
- Japan
- Prior art keywords
- current
- comparator
- load
- extension cord
- minute
- 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 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Audible And Visible Signals (AREA)
- Emergency Alarm Devices (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
第１図はこの考案の一実施例による過電流検出
表示灯付電力負荷回路の図、第２図は従来の電力
負荷回路の図である。図において、１……電力供
給源、２……回路を保護する回路遮断器、３……
電力取り出しコンセント、４……公設配線材、５
……私設延長コード、６……負荷、７……負荷電
流を検出する変流器、８……電流増幅器、９……
電流発生装置、１０……コンパレータ、１１……
整流ダイオード、１２……２色カラーＬＥＤ、１
３……電流調整用抵抗である。なお、図中、同一
符号は同一あるいは相当部分を示す。
FIG. 1 is a diagram of a power load circuit with an overcurrent detection indicator light according to an embodiment of the present invention, and FIG. 2 is a diagram of a conventional power load circuit. In the figure, 1... power supply source, 2... circuit breaker that protects the circuit, 3...
Power outlet, 4...Public wiring material, 5
...Private extension cord, 6...Load, 7...Current transformer for detecting load current, 8...Current amplifier, 9...
Current generator, 10... Comparator, 11...
Rectifier diode, 12...Two-color LED, 1
3...Resistance for current adjustment. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
負荷を接続した場合、前記延長コード対線の１本
から負荷電流に比例した微小電流を検出する変流
器と、前記微小電流を増幅する増幅器と、前記延
長コードの許容電流とほゞ同一値電流を発生する
電流発生装置と、前記増幅後の負荷電流と前記電
流発生装置からの電流とを比較するコンパレータ
と、前記コンパレータからの出力電流を整流する
整流ダイオードと、前記コンパレータからの電流
値の大きさ次第で、いずれかが点灯する２色カラ
ーＬＥＤと、前記ＬＥＤ輝度調整用抵抗器とを有
する過電流検出表示灯付端末装置。 When a load is connected from a commercial power outlet using an extension cord, a current transformer that detects a minute current proportional to the load current from one of the pair of extension cord wires, an amplifier that amplifies the minute current, and the a current generator that generates a current that is substantially the same as the allowable current of the extension cord; a comparator that compares the amplified load current with the current from the current generator; and a rectifier that rectifies the output current from the comparator. A terminal device with an overcurrent detection indicator light, comprising a diode, a two-color LED that lights up depending on the magnitude of the current value from the comparator, and a resistor for adjusting the LED brightness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9177789U JPH0332381U (en) | 1989-08-03 | 1989-08-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9177789U JPH0332381U (en) | 1989-08-03 | 1989-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0332381U true JPH0332381U (en) | 1991-03-28 |
Family
ID=31641242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9177789U Pending JPH0332381U (en) | 1989-08-03 | 1989-08-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0332381U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07220187A (en) * | 1994-02-02 | 1995-08-18 | Cleanup Corp | Displaying device for used state of electric product for domestic use |
-
1989
- 1989-08-03 JP JP9177789U patent/JPH0332381U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07220187A (en) * | 1994-02-02 | 1995-08-18 | Cleanup Corp | Displaying device for used state of electric product for domestic use |