GB1215912A - A demodulator circuit arrangement - Google Patents
A demodulator circuit arrangementInfo
- Publication number
- GB1215912A GB1215912A GB587169A GB587169A GB1215912A GB 1215912 A GB1215912 A GB 1215912A GB 587169 A GB587169 A GB 587169A GB 587169 A GB587169 A GB 587169A GB 1215912 A GB1215912 A GB 1215912A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- capacitor
- potential
- gating
- potentials
- 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
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C27/00—Electric analogue stores, e.g. for storing instantaneous values
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C27/00—Electric analogue stores, e.g. for storing instantaneous values
- G11C27/02—Sample-and-hold arrangements
- G11C27/024—Sample-and-hold arrangements using a capacitive memory element
- G11C27/026—Sample-and-hold arrangements using a capacitive memory element associated with an amplifier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/04—Distributors combined with modulators or demodulators
- H04J3/047—Distributors with transistors or integrated circuits
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Processing Of Color Television Signals (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
1,215,912. Pulse modulation circuits; transistor gate and store circuits. TELEFONBAU UND NORMALZEIT G.m.b.H. 4 Feb., 1969 [6 March, 1968], No. 5871/69. Headings H3T and H4L. In a demodulator for amplitude-modulated pulses, a gating circuit comprising a diode in series with the emitter-collector path of a transistor is connected between the signal input and a storage capacitor and means connected to the base of the transistor render it conductive at predetermined time intervals. As shown, time division multiplex signals are applied at SS and negative gating pulses are applied at T during the channel time slot. Each gating pulse blocks transistor T2 so that transistor T1 conducts and the storage capacitor CS is connected to input SS via transistor T1 and diode D. If the capacitor is charged to a potential higher than the signal voltage the capacitor will discharge via T1 and D until the two potentials are equal. Similarly, if the capacitor is charged to a lower potential than the signal voltage it will receive a charge until the two potentials are equalized. The potential across the capacitor CS is supplied via a high input impedance amplifier T3, T4 to a low-pass filter (not shown). A field effect transistor or thermionic valve may replace amplifier T3, T4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT219268A AT280356B (en) | 1968-03-06 | 1968-03-06 | Circuit arrangement for controlling the capacitor of a demodulator of a time division multiplex system used for the intermediate storage of the time value of a signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1215912A true GB1215912A (en) | 1970-12-16 |
Family
ID=3529677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB587169A Expired GB1215912A (en) | 1968-03-06 | 1969-02-04 | A demodulator circuit arrangement |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT280356B (en) |
| DE (1) | DE1766110C3 (en) |
| GB (1) | GB1215912A (en) |
| NL (1) | NL163083C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0319677A2 (en) * | 1987-12-11 | 1989-06-14 | Siemens Aktiengesellschaft | Sample and hold circuit for telecommunication systems |
| US9757444B2 (en) | 2001-10-11 | 2017-09-12 | Wyeth Holdings Llc | Immunogenic compositions for the prevention and treatment of meningococcal disease |
| US9757443B2 (en) | 2010-09-10 | 2017-09-12 | Wyeth Llc | Non-lipidated variants of Neisseria meningitidis ORF2086 antigens |
-
1968
- 1968-03-06 AT AT219268A patent/AT280356B/en not_active IP Right Cessation
- 1968-04-04 DE DE19681766110 patent/DE1766110C3/en not_active Expired
- 1968-06-06 NL NL6807917A patent/NL163083C/en not_active IP Right Cessation
-
1969
- 1969-02-04 GB GB587169A patent/GB1215912A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0319677A2 (en) * | 1987-12-11 | 1989-06-14 | Siemens Aktiengesellschaft | Sample and hold circuit for telecommunication systems |
| EP0319677A3 (en) * | 1987-12-11 | 1991-03-06 | Siemens Aktiengesellschaft | Sample and hold circuit for telecommunication systems |
| US9757444B2 (en) | 2001-10-11 | 2017-09-12 | Wyeth Holdings Llc | Immunogenic compositions for the prevention and treatment of meningococcal disease |
| US9757443B2 (en) | 2010-09-10 | 2017-09-12 | Wyeth Llc | Non-lipidated variants of Neisseria meningitidis ORF2086 antigens |
Also Published As
| Publication number | Publication date |
|---|---|
| AT280356B (en) | 1970-04-10 |
| DE1766110C3 (en) | 1973-10-11 |
| DE1766110A1 (en) | 1972-03-23 |
| DE1766110B2 (en) | 1973-03-29 |
| NL163083C (en) | 1980-07-15 |
| NL6807917A (en) | 1969-09-09 |
| NL163083B (en) | 1980-02-15 |
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