GB877310A - Amplifier for telephone fee meter - Google Patents
Amplifier for telephone fee meterInfo
- Publication number
- GB877310A GB877310A GB26532/59A GB2653259A GB877310A GB 877310 A GB877310 A GB 877310A GB 26532/59 A GB26532/59 A GB 26532/59A GB 2653259 A GB2653259 A GB 2653259A GB 877310 A GB877310 A GB 877310A
- Authority
- GB
- United Kingdom
- Prior art keywords
- meter
- circuit
- emitter
- winding
- resistance
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Meter Arrangements (AREA)
Abstract
877,310. Automatic exchange systems. SODECO, SOC. DES COMPTEURS DE GENEVE. Aug. 4, 1959 [Jan. 22, 1959], No. 26532/59. Class 40 (4). In a substation metering arrangement the winding 12 of the meter, or of a relay controlling the meter, forms with a resistance 11 and condenser 15 a circuit tuned to the frequency of the metering impulses, and each impulse produces by virtue of a rectifier 17 a voltage across the emitter and base of a transistor 14 allowing current to flow in the emitter-collector circuit to energize the meter. The impulses may be received over a simplex circuit, Fig. 1, or a series circuit, Fig. 2. In a modification the resistance 11 may be a part of the winding 12. A second meter may be provided to indicate the charge for each call. The apparatus which may be formed as a unit is suitable for use in hotels or similar places, the battery being charged from the exchange. Specification 877,309 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH877310X | 1959-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB877310A true GB877310A (en) | 1961-09-13 |
Family
ID=4544522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26532/59A Expired GB877310A (en) | 1959-01-22 | 1959-08-04 | Amplifier for telephone fee meter |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB877310A (en) |
-
1959
- 1959-08-04 GB GB26532/59A patent/GB877310A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB877309A (en) | Improvements in and relating to an amplifier system for telephone fee counter | |
| GB1041731A (en) | Improvements in or relating to electromagnetic relay arrangements | |
| GB877310A (en) | Amplifier for telephone fee meter | |
| FR1316074A (en) | Device for supplying receivers with rectified current, in particular for charging electric accumulator batteries | |
| GB1081920A (en) | Electric relay | |
| GB736934A (en) | Improvements in or relating to trigger transistor circuits | |
| SU107106A1 (en) | Batteryless telephone with inductor call | |
| GB1370956A (en) | Electric circuits for telephone instruments | |
| GB917509A (en) | A circuit arrangement for the supply of current to amplifiers in subscribers' stations | |
| GB1343591A (en) | Portable device for measuring the insulation resistance of an article under test | |
| JPS5384512A (en) | Automatic charging recording system | |
| JPS5696306A (en) | Direct current regulated power supply device | |
| JPS52147015A (en) | Convergence device | |
| NO773222L (en) | CALL DISCOUNT COUNTER. | |
| GB879000A (en) | Battery charging system | |
| GB824236A (en) | Improvements in or relating to telephone apparatus | |
| GB837160A (en) | Improvements in and relating to a rectifying filter for a telephone fee meter | |
| GB1499321A (en) | Telephone apparatus | |
| GB879893A (en) | Power supply for electronic equipment | |
| GB1294250A (en) | Circuit arrangements for telephone charge meters | |
| GB883757A (en) | Improvements relating to the storage of digital information | |
| DK92600C (en) | Telephone tariff indicator device with 16 kHz charging pulse signals. | |
| SU511706A1 (en) | Device for receiving telemechanic signals | |
| GB875427A (en) | Improvements in or relating to electric watches | |
| GB862130A (en) | Improvements in or relating to battery charging apparatus |