ES8604379A1 - Circuit for feeding test tables in telephone plants (Machine-translation by Google Translate, not legally binding) - Google Patents
Circuit for feeding test tables in telephone plants (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES8604379A1 ES8604379A1 ES535908A ES535908A ES8604379A1 ES 8604379 A1 ES8604379 A1 ES 8604379A1 ES 535908 A ES535908 A ES 535908A ES 535908 A ES535908 A ES 535908A ES 8604379 A1 ES8604379 A1 ES 8604379A1
- Authority
- ES
- Spain
- Prior art keywords
- circuit
- translation
- machine
- test tables
- legally binding
- 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
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
CIRCUIT FOR THE FEEDING OF TEST TABLES IN TELEPHONE POWER PLANTS, WHICH TAKING THE EXISTING POTENTIAL AT SUCH TEST TABLES, CONVERTS IT TO OTHER TWO LEVELS OF TENSION, NECESSARY FOR THE OPERATION OF EXISTING MEASURING EQUIPMENT. IT INCLUDES AN ELECTRONIC CIRCUIT THAT INCLUDES RESISTORS R1 AND R2 THAT POLARIZE TRANSISTORS TR1 AND TR2, THROUGH WHICH A SQUARE WAVE IS GENERATED IN THE PRIMARY OF THE TRANSFORMER TRA; A C2 CAPACITOR THAT, TOGETHER WITH RESISTANCE R1, SETS THE FREQUENCY OF THE SIGNAL GENERATED IN TRA; A C4 CAPACITOR THAT FILTERS THE SIGNAL; AND A D3 DIODE THAT PROTECTS THE CIRCUIT AGAINST POLARITY INVESTMENTS. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES535908A ES8604379A1 (en) | 1984-09-14 | 1984-09-14 | Circuit for feeding test tables in telephone plants (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES535908A ES8604379A1 (en) | 1984-09-14 | 1984-09-14 | Circuit for feeding test tables in telephone plants (Machine-translation by Google Translate, not legally binding) |
Publications (2)
Publication Number | Publication Date |
---|---|
ES535908A0 ES535908A0 (en) | 1985-12-01 |
ES8604379A1 true ES8604379A1 (en) | 1985-12-01 |
Family
ID=8487870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES535908A Expired ES8604379A1 (en) | 1984-09-14 | 1984-09-14 | Circuit for feeding test tables in telephone plants (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES8604379A1 (en) |
-
1984
- 1984-09-14 ES ES535908A patent/ES8604379A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES535908A0 (en) | 1985-12-01 |
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