GB1226697A - - Google Patents
Info
- Publication number
- GB1226697A GB1226697A GB1226697DA GB1226697A GB 1226697 A GB1226697 A GB 1226697A GB 1226697D A GB1226697D A GB 1226697DA GB 1226697 A GB1226697 A GB 1226697A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- switch
- network
- selector switch
- proportional
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/127—Arrangements for measuring electric power or power factor by using pulse modulation
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
- G06G7/161—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division with pulse modulation, e.g. modulation of amplitude, width, frequency, phase or form
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06J—HYBRID COMPUTING ARRANGEMENTS
- G06J1/00—Hybrid computing arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Software Systems (AREA)
- Automation & Control Theory (AREA)
- Evolutionary Computation (AREA)
- Fuzzy Systems (AREA)
- Measurement Of Current Or Voltage (AREA)
- Amplifiers (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
1,226,697. 697. Energy measurement. LANDIS & GYR A.G. Oct.13, 1969 [Oct.18, 1968], No. 50256/69. Heading G1U. A circuit arrangement for measuring electrical energy (in a power network 1) incorporates a mark space modulator 4, which in use is controlled by the voltage in the network 1 to provide an output signal which controls a selector switch 5 to determine at the output of the switch the polarity of a current proportional signal applied to the input thereof. The input to the switch is formed by a current transformer 3 in response to the current in the network 1, so that the mean value in time of the signal at the output of the selector switch is proportional to the product of the voltage and current in the network. The output signal is supplied to a current frequency converter 11 including an operational amplifier 12, which delivers a series of pulses whose frequency is proportional to the product, for subsequent counting at 18. The selector switch 5 may be two pole, as shown in Fig. 1, or the circuit between the current transformer 3 and the operational amplifier 12 may be adapted to operate with a single pole switch by using a centre, tapped transformer Fig. 2 (not shown) or operating on alternate half cycles Fig. 3 (not shown). The selector switch may be formed from field effect transistors controlled by the pulses from the mark-space modulator Fig. 4, (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1560168A CH472677A (en) | 1968-10-18 | 1968-10-18 | Circuit arrangement for measuring electrical energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1226697A true GB1226697A (en) | 1971-03-31 |
Family
ID=4410447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1226697D Expired GB1226697A (en) | 1968-10-18 | 1969-10-13 |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS4922159B1 (en) |
| AT (1) | AT287842B (en) |
| BE (1) | BE734752A (en) |
| CH (1) | CH472677A (en) |
| DE (1) | DE1807581C3 (en) |
| DK (1) | DK134205B (en) |
| FR (1) | FR2020958A1 (en) |
| GB (1) | GB1226697A (en) |
| NL (1) | NL153671B (en) |
| NO (1) | NO125511B (en) |
| SE (1) | SE339961B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH462953A (en) * | 1967-09-14 | 1968-09-30 | Landis & Gyr Ag | Electronic power meter |
| US3942110A (en) * | 1974-05-08 | 1976-03-02 | General Electric Company | Analog to pulse rate converter |
| US3947763A (en) * | 1974-05-30 | 1976-03-30 | General Electric Company | C-MOS electronic kWh meter and method for metering electrical energy |
| US3955138A (en) * | 1974-11-06 | 1976-05-04 | General Electric Company | Electronic energy consumption meter with input transformer having single resistance terminated secondary winding coupled to C-MOS switches driven by pulse width modulated control signals |
| JPS5360675A (en) * | 1976-11-12 | 1978-05-31 | Yokogawa Hokushin Electric Corp | Converter for power and dc signal |
| JPS53113250U (en) * | 1977-02-16 | 1978-09-09 | ||
| JPS53138658U (en) * | 1977-04-08 | 1978-11-02 | ||
| US4096436A (en) * | 1977-05-23 | 1978-06-20 | The Valeron Corporation | Power monitor |
| DE2747385C2 (en) * | 1977-10-21 | 1983-12-29 | Siemens AG, 1000 Berlin und 8000 München | Electronic alternating current meter |
| US4147978A (en) * | 1977-12-19 | 1979-04-03 | Dupont Energy Management Corporation | System for monitoring electrical energy consumption |
| JPS581388B2 (en) * | 1978-07-06 | 1983-01-11 | 株式会社東芝 | electricity meter |
| JPS571972A (en) * | 1980-06-04 | 1982-01-07 | Toshiba Corp | Electronic type electric energy meter |
| AT392177B (en) * | 1984-05-04 | 1991-02-11 | Siemens Ag | DEVICE FOR DETECTING THE TORQUE PERFORMANCE ON A PHASE OF AN INVERTER WITH A PRESET INPUT DC VOLTAGE, IN PARTICULAR A PULSE INVERTER |
| CH680620A5 (en) * | 1989-03-31 | 1992-09-30 | Landis & Gyr Betriebs Ag | |
| DE29511680U1 (en) * | 1995-07-19 | 1996-11-21 | Niggemeyer, Gert Günther, 21244 Buchholz | Multiplication circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2919408A (en) * | 1957-08-23 | 1959-12-29 | Harold J Brown | Electronic watthour meter |
-
1968
- 1968-10-18 CH CH1560168A patent/CH472677A/en not_active IP Right Cessation
- 1968-11-04 DE DE19681807581 patent/DE1807581C3/en not_active Expired
-
1969
- 1969-05-27 AT AT502469A patent/AT287842B/en not_active IP Right Cessation
- 1969-06-17 FR FR6920081A patent/FR2020958A1/fr active Pending
- 1969-06-18 BE BE734752D patent/BE734752A/xx not_active IP Right Cessation
- 1969-07-21 NL NL6911128A patent/NL153671B/en not_active IP Right Cessation
- 1969-07-24 JP JP44058675A patent/JPS4922159B1/ja active Pending
- 1969-08-22 SE SE1167769A patent/SE339961B/xx unknown
- 1969-08-29 NO NO347069A patent/NO125511B/no unknown
- 1969-10-13 GB GB1226697D patent/GB1226697A/en not_active Expired
- 1969-10-17 DK DK552769A patent/DK134205B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BE734752A (en) | 1969-12-01 |
| NO125511B (en) | 1972-09-18 |
| DK134205B (en) | 1976-09-27 |
| NL6911128A (en) | 1970-04-21 |
| NL153671B (en) | 1977-06-15 |
| DK134205C (en) | 1977-02-28 |
| CH472677A (en) | 1969-05-15 |
| AT287842B (en) | 1971-02-10 |
| DE1807581C3 (en) | 1973-07-05 |
| DE1807581A1 (en) | 1970-05-14 |
| JPS4922159B1 (en) | 1974-06-06 |
| FR2020958A1 (en) | 1970-07-17 |
| SE339961B (en) | 1971-11-01 |
| DE1807581B2 (en) | 1971-04-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |