GB819518A - Improvements in or relating to electrical pulse distributors - Google Patents
Improvements in or relating to electrical pulse distributorsInfo
- Publication number
- GB819518A GB819518A GB616858A GB616858A GB819518A GB 819518 A GB819518 A GB 819518A GB 616858 A GB616858 A GB 616858A GB 616858 A GB616858 A GB 616858A GB 819518 A GB819518 A GB 819518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- pulse
- tubes
- cathode
- voltage
- 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
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/04—Distributors combined with modulators or demodulators
- H04J3/042—Distributors with electron or gas discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Particle Accelerators (AREA)
Abstract
819,518. Multi-stable-state pulse distributer circuits. STANDARD TELEPHONES & CABLES Ltd. Feb. 26, 1958, No. 6168/58. Class 40 (6). The Figure shows a multi-stable-state pulse distributer circuit in which the individual pulses of a pulse train applied to input IP appear sequentially at outputs 01, 02 ... ON. Cold cathode gas tube V1 is initially fired by applying a negative pulse on the reset terminal RT, the other tubes V2 ... VN are extinguished by the drop in the common load resistor R2 so that at the end of the reset pulse tube V1 alone remains fired. The positive voltage at its cathode primes thyratron T1 at its control grid so that the next positive pulse at terminal IP causes tube T1 alone to fire the positive pulse at its cathode appearing at output terminal O1 This output pulse is also applied via rectifier MR2 to the grid of cathode follower tube VA which conducts applying positive voltage to the beam tetrode tubes VB, VC. These tubes conduct heavily so that there is a large voltage drop in common load resistor R2, and tube V1 is cut off when the positive pulse on the input lead IP ends. As tube T1 is also cut off the negative voltage at its anode causes tube VA and thus tubes VB, VC to be non-conductive and the anode voltage of the cold cathode tubes V1, V2 &c., is restored. The negative voltage from the cathode of tube V1 is applied to the cathode of tube V2 which fires, the positive voltage at its cathode priming tube T2 so that the next pulse causes this tube to fire and via tubes VA, VB, VC cuts off the cold cathode tube V2. When the pulse ends thyratron T2 is cut off and the next tube (V3, not shown) is fired from tube T2. Since the chain of tubes is a closed one the process repeats itself output pulses being taken from leads O1 02 ... ON sequentially. If a fault develops in one thyratron so the pulse is not passed by it tubes VA, VB, VC will not operate and the associated cold cathode tube will remain conducting indicating the existence of a fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB616858A GB819518A (en) | 1958-02-26 | 1958-02-26 | Improvements in or relating to electrical pulse distributors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB616858A GB819518A (en) | 1958-02-26 | 1958-02-26 | Improvements in or relating to electrical pulse distributors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB819518A true GB819518A (en) | 1959-09-02 |
Family
ID=9809652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB616858A Expired GB819518A (en) | 1958-02-26 | 1958-02-26 | Improvements in or relating to electrical pulse distributors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB819518A (en) |
-
1958
- 1958-02-26 GB GB616858A patent/GB819518A/en not_active Expired
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