GB669364A - Improvements in or relating to electric pulse modulation systems - Google Patents
Improvements in or relating to electric pulse modulation systemsInfo
- Publication number
- GB669364A GB669364A GB14048/49A GB1404849A GB669364A GB 669364 A GB669364 A GB 669364A GB 14048/49 A GB14048/49 A GB 14048/49A GB 1404849 A GB1404849 A GB 1404849A GB 669364 A GB669364 A GB 669364A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- valve
- pulse modulation
- relating
- pulses
- 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
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/02—Amplitude modulation, i.e. PAM
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Particle Accelerators (AREA)
Abstract
669,364. Pulse modulation circuits. LIBOIS, L. J. May 25, 1949 [June 10, 1948], No. 14048/49. Class 40 (v). In a pulse amplitude modulator pulses 2, from source 1, are fed through resistance 3 to the clipping rectifier 4 biased by the anode current of valve 5 flowing in cathode resistance 6 shunted by condenser 7. The junction of resistance 3 and rectifier 4 is connected through the secondary of transformer 10 to the grid of valve 5, the primary being connected to the modulating signal source 8, 9. The cathode resistance of valve 5 also includes the unshunted resistance 12 which improves the linearity of modulation. The amplitude modulated pulses are derived from the anode 14 of valve 5, which is biased to cut-off in the absence of pulses.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR823605X | 1948-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB669364A true GB669364A (en) | 1952-04-02 |
Family
ID=9281442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14048/49A Expired GB669364A (en) | 1948-06-10 | 1949-05-25 | Improvements in or relating to electric pulse modulation systems |
Country Status (6)
Country | Link |
---|---|
US (1) | US2518341A (en) |
BE (1) | BE489276A (en) |
CH (1) | CH280042A (en) |
DE (1) | DE823605C (en) |
FR (1) | FR967489A (en) |
GB (1) | GB669364A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2798153A (en) * | 1953-02-19 | 1957-07-02 | Vitro Corp Of America | Switching circuitry |
US2956158A (en) * | 1957-04-23 | 1960-10-11 | Sperry Rand Corp | Voltage discriminating circuit |
US3131248A (en) * | 1961-12-04 | 1964-04-28 | Sigel David | Amplitude modulator |
DE1281491B (en) * | 1962-04-02 | 1968-10-31 | Akad Wissenschaften Ddr | Circuit arrangement for influencing the amplitude of electrical pulses |
US3240859A (en) * | 1962-07-11 | 1966-03-15 | Horace N Rowe | Electronic tremolo unit |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE410599A (en) * | 1934-08-09 |
-
0
- BE BE489276D patent/BE489276A/xx unknown
-
1948
- 1948-06-10 FR FR967489D patent/FR967489A/en not_active Expired
-
1949
- 1949-05-23 CH CH280042D patent/CH280042A/en unknown
- 1949-05-25 GB GB14048/49A patent/GB669364A/en not_active Expired
- 1949-05-28 US US95910A patent/US2518341A/en not_active Expired - Lifetime
-
1950
- 1950-06-14 DE DEL2351A patent/DE823605C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR967489A (en) | 1950-11-03 |
US2518341A (en) | 1950-08-08 |
BE489276A (en) | |
DE823605C (en) | 1951-12-06 |
CH280042A (en) | 1951-12-31 |
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