JPS5713364A - Electronic system electric energy meter - Google Patents
Electronic system electric energy meterInfo
- Publication number
- JPS5713364A JPS5713364A JP8801880A JP8801880A JPS5713364A JP S5713364 A JPS5713364 A JP S5713364A JP 8801880 A JP8801880 A JP 8801880A JP 8801880 A JP8801880 A JP 8801880A JP S5713364 A JPS5713364 A JP S5713364A
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- load current
- frequency
- indicator
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
Abstract
PURPOSE:To enable to perform a different indication corresponding to a load condition of a load current, by a method wherein a decision is conducted by means of a comparison output of a frequency signal, corresponding to a power, with a reference frequency, and a level detection output of a multiplying output. CONSTITUTION:An output of a multiplying circuit 3, to which outputs of a voltage converting part 1 and a current converting part 2 are fed, is supplied to a count indicating part 12 via a gate circuit 9 being controlled by means of an integrating circuit 4 and a frequency comparison circuit 4. Meanwhile, an output of a circuit 33, which detects an output of a flip flop circuit 27, which is set when a frequency of a pulse f1 is below a reference frequency, and an output level of a multiplying circuit 3, is supplied to gate circuits 31a-31c, and selects indicators 32a-32c for indication. Thus, in case a load current flows in a reverse direction, the indicator 32a is caused to indicate, in case the load current is below a start current, the indicator 32b operates, and in the case of the ordinary load current, the indicator 32c actuates. This permits the easy confirmation of an using condition of a power and the improvement of a monitoring efficiency can be improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8801880A JPS5713364A (en) | 1980-06-28 | 1980-06-28 | Electronic system electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8801880A JPS5713364A (en) | 1980-06-28 | 1980-06-28 | Electronic system electric energy meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5713364A true JPS5713364A (en) | 1982-01-23 |
| JPS6249937B2 JPS6249937B2 (en) | 1987-10-22 |
Family
ID=13931091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8801880A Granted JPS5713364A (en) | 1980-06-28 | 1980-06-28 | Electronic system electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5713364A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170507A (en) * | 1983-10-31 | 1985-09-04 | モルガン コンストラクシヨン カンパニイ | Rolling apparatus and method |
| JPH0479269U (en) * | 1990-11-26 | 1992-07-10 |
-
1980
- 1980-06-28 JP JP8801880A patent/JPS5713364A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170507A (en) * | 1983-10-31 | 1985-09-04 | モルガン コンストラクシヨン カンパニイ | Rolling apparatus and method |
| JPH032561B2 (en) * | 1983-10-31 | 1991-01-16 | Morgan Construction Co | |
| JPH0479269U (en) * | 1990-11-26 | 1992-07-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6249937B2 (en) | 1987-10-22 |
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