GB505352A - Improvements in or relating to frequency dividers - Google Patents
Improvements in or relating to frequency dividersInfo
- Publication number
- GB505352A GB505352A GB37526/38A GB3752638A GB505352A GB 505352 A GB505352 A GB 505352A GB 37526/38 A GB37526/38 A GB 37526/38A GB 3752638 A GB3752638 A GB 3752638A GB 505352 A GB505352 A GB 505352A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillators
- frequency
- indicated
- impedance
- circuits
- 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
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/04—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback
- H03K3/16—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using a transformer for feedback, e.g. blocking oscillator with saturable core
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/00006—Changing the frequency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Particle Accelerators (AREA)
- Electron Tubes For Measurement (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
505,352. Valve generating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Dec. 23, 1938, No. 37526. Convention date, Dec. 23, 1937. [Class 40 (v)] Two blocking oscillators, or multi-vibrators, which are arranged to operate at different sub-multiples of a control frequency are interconnected so that impulses at a frequency equal to the greatest common sub-multiple are produced across a common output' impedance. The essential parts of the circuits of two blocking oscillators are indicated in Fig. 6. As shown, the two valves are pentodes, although a single valve with electrodes as indicated in Fig. 9, could be used, the screens of the valves being used as the oscillator anodes and the control,and suppressor grids being cross connected. The oscillators are arranged to oscillate at different sub-multiples of the main frequency. With this arrangement an impulse is produced across the common anode impedance 10, Fig. 6, only when the two oscillators are in step. For example, if the synchronizing frequency is S and the two circuits oscillate at S/n and S/m respectively, the frequency of the pulses across 10 is S/n Î m . The conducting periods of the oscillators is kept short to prevent intermediate pulses due to overlap. Synchronizing pulses may be applied across an impedance 6 in the grid lead as indicated in Fig. 3, or across 6<1> in the cathode lead as shown in Fig. 4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET49715D DE711591C (en) | 1937-12-24 | 1937-12-24 | Circuit arrangement for frequency division with electron tubes that are connected as blocking oscillators or belong to multivibrators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB505352A true GB505352A (en) | 1939-05-09 |
Family
ID=6546355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37526/38A Expired GB505352A (en) | 1937-12-24 | 1938-12-23 | Improvements in or relating to frequency dividers |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2237668A (en) |
| DE (1) | DE711591C (en) |
| FR (1) | FR847895A (en) |
| GB (1) | GB505352A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE758534C (en) * | 1939-06-03 | 1954-11-22 | Opta Radio A G | Arrangement for frequency division of a pulse voltage |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2516533A (en) * | 1945-04-07 | 1950-07-25 | Frederick F Slack | Electrical circuit |
| US2485395A (en) * | 1945-04-11 | 1949-10-18 | Gen Electric | Pulse generating circuit |
| US2708241A (en) * | 1946-01-30 | 1955-05-10 | Bess Leon | Wide gate generator |
| NL83200C (en) * | 1947-10-03 | 1900-01-01 | ||
| US2695959A (en) * | 1948-09-09 | 1954-11-30 | Bell Telephone Labor Inc | Frequency dividing circuit |
-
1937
- 1937-12-24 DE DET49715D patent/DE711591C/en not_active Expired
-
1938
- 1938-12-22 US US247166A patent/US2237668A/en not_active Expired - Lifetime
- 1938-12-22 FR FR847895D patent/FR847895A/en not_active Expired
- 1938-12-23 GB GB37526/38A patent/GB505352A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE758534C (en) * | 1939-06-03 | 1954-11-22 | Opta Radio A G | Arrangement for frequency division of a pulse voltage |
Also Published As
| Publication number | Publication date |
|---|---|
| DE711591C (en) | 1941-10-03 |
| FR847895A (en) | 1939-10-18 |
| US2237668A (en) | 1941-04-08 |
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