GB1468259A - Maximum demand comparitor - Google Patents
Maximum demand comparitorInfo
- Publication number
- GB1468259A GB1468259A GB2664874A GB2664874A GB1468259A GB 1468259 A GB1468259 A GB 1468259A GB 2664874 A GB2664874 A GB 2664874A GB 2664874 A GB2664874 A GB 2664874A GB 1468259 A GB1468259 A GB 1468259A
- Authority
- GB
- United Kingdom
- Prior art keywords
- counter
- maximum demand
- switches
- signal
- june
- 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
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
- G01R21/1333—Arrangements for measuring electric power or power factor by using digital technique adapted for special tariff measuring
- G01R21/1338—Measuring maximum demand
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
- H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
- H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
1468259 Counting electric pulses; electricity meters A J COLEMAN 9 June 1975 [17 June 1974 23 Sept 1974] 26648/74 and 41394/74 Heading G4D A predetermined counter is employed to prevent an electrical load exceeding a preset maximum demand; the counter counts pulses generated for each increment of electricity consumed until the counter is reset by an external time signal or the count exceeds a value determined by the preset maximum demand when it issues a signal which can be used to disconnect or reduce the load. In a first embodiment (Fig. 1, not shown) the maximum demand is set by a set of selector switches, comparators comparing the value set in the switches with that in the counter. In a second embodiment (Fig. 2, not shown) the set of switches selects the rate of an oxilator whose output pulses are counted by another counter to provide a steadily increasing maximum; if the count in the main counter exceeds that in the other the comparator issues the signal. A further counter records the actual maximum demand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2664874A GB1468259A (en) | 1975-06-09 | 1975-06-09 | Maximum demand comparitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2664874A GB1468259A (en) | 1975-06-09 | 1975-06-09 | Maximum demand comparitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1468259A true GB1468259A (en) | 1977-03-23 |
Family
ID=10246967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2664874A Expired GB1468259A (en) | 1975-06-09 | 1975-06-09 | Maximum demand comparitor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1468259A (en) |
-
1975
- 1975-06-09 GB GB2664874A patent/GB1468259A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |