GB936643A - Improvements in or relating to electrical fault detection circuits - Google Patents
Improvements in or relating to electrical fault detection circuitsInfo
- Publication number
- GB936643A GB936643A GB1926862A GB1926862A GB936643A GB 936643 A GB936643 A GB 936643A GB 1926862 A GB1926862 A GB 1926862A GB 1926862 A GB1926862 A GB 1926862A GB 936643 A GB936643 A GB 936643A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- condition
- fault detection
- stages
- detection circuits
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K21/00—Details of pulse counters or frequency dividers
- H03K21/40—Monitoring; Error detection; Preventing or correcting improper counter operation
Landscapes
- Monitoring And Testing Of Exchanges (AREA)
Abstract
936,643. Counters. STANDARD TELEPHONES & CABLES Ltd. May 18, 1962, No. 19268/62. Class 106 (1). Faulty operation of a ring counter is detected by the provision of an additional bi-stable unit X which should be in state O while preceding stages are operative and in state 1 at other times. Strobe pulses are omitted from the drawings for clarity. Fig. 1 shows a conventional ring counter which should have only one stage A-J in " 1 " condition. If X is in " 0 " condition while stages A-E are also " 0," or if X is in " 1 " condition while stages F-J are at " 0 " then OR gate G01 sends a signal to an alarm circuit. A modification is shown in Fig. 3 while failure of X in Fig. 3 to change over is detected by the circuit of Fig. 4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1926862A GB936643A (en) | 1962-05-18 | 1962-05-18 | Improvements in or relating to electrical fault detection circuits |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1926862A GB936643A (en) | 1962-05-18 | 1962-05-18 | Improvements in or relating to electrical fault detection circuits |
Publications (1)
Publication Number | Publication Date |
---|---|
GB936643A true GB936643A (en) | 1963-09-11 |
Family
ID=10126559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1926862A Expired GB936643A (en) | 1962-05-18 | 1962-05-18 | Improvements in or relating to electrical fault detection circuits |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB936643A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5040306B1 (en) * | 1969-08-29 | 1975-12-23 |
-
1962
- 1962-05-18 GB GB1926862A patent/GB936643A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5040306B1 (en) * | 1969-08-29 | 1975-12-23 |
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