GB482724A - Improvements in or relating to generators of relaxation oscillations - Google Patents
Improvements in or relating to generators of relaxation oscillationsInfo
- Publication number
- GB482724A GB482724A GB26894/36A GB2689436A GB482724A GB 482724 A GB482724 A GB 482724A GB 26894/36 A GB26894/36 A GB 26894/36A GB 2689436 A GB2689436 A GB 2689436A GB 482724 A GB482724 A GB 482724A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- condenser
- grid
- resistance
- conductive
- 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
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/92—Generating pulses having essentially a finite slope or stepped portions having a waveform comprising a portion of a sinusoid
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
- H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
- H03K4/86—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements gas-filled tubes or spark-gaps
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K6/00—Manipulating pulses having a finite slope and not covered by one of the other main groups of this subclass
- H03K6/02—Amplifying pulses
Abstract
482,724. Valve generating circuits. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Oct. 3, 1936, Nos. 26894 and 26895. Convention dates, Oct. 4, 1935 and July 29, 1936. [Class 40 (v)] In a relaxation oscillator in which a condenser C is charged through a resistance R, and is discharged through a grid-controlled tube T<1>, the tube is rendered periodically conductive by associating a gas discharge tube N with its grid-cathode circuit. The grid of the tube T<1> is normally at a negative potential due to the cathode resistance P, but when the tube N is rendered conductive by a pulse applied through the coils B, the tube T<1> becomes conductive and discharges the condenser C. The tube N is connected to the junction of resistances P<1>, P<2> across the supply. By connecting a condenser K across the resistance P<2>, the tube N may be arranged to flash periodically and independently of the synchronizing pulses. The presence of the tube N reduces the exponential curvature of the charging-curve of the condenser C. In a modification, the tube N is replaced by a gridcontrolled gas discharge tube, and synchronizing-pulses are applied to its grid, Fig. 2 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR48308T | 1936-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB482724A true GB482724A (en) | 1938-04-04 |
Family
ID=8683665
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26894/36A Expired GB482724A (en) | 1936-07-29 | 1936-10-03 | Improvements in or relating to generators of relaxation oscillations |
| GB19279/37A Expired GB482725A (en) | 1936-07-29 | 1936-10-03 | Improvements in or relating to generators of relaxation oscillations |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19279/37A Expired GB482725A (en) | 1936-07-29 | 1936-10-03 | Improvements in or relating to generators of relaxation oscillations |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2168508A (en) |
| BE (2) | BE417359A (en) |
| FR (2) | FR807554A (en) |
| GB (2) | GB482724A (en) |
| NL (1) | NL50848C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2477634A (en) * | 1943-07-16 | 1949-08-02 | Donald M Lowe | Keyer circuit |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2942548A (en) * | 1943-03-17 | 1960-06-28 | Gilbert R Bushong | Oscillator-thyratron circuit |
| US2519278A (en) * | 1944-11-01 | 1950-08-15 | Bell Telephone Labor Inc | Pulse-actuated circuit |
| US2458366A (en) * | 1946-09-11 | 1949-01-04 | Motorola Inc | Saw-tooth voltage generator |
| US2717336A (en) * | 1953-05-08 | 1955-09-06 | Michael Res Company Inc | Flasher circuit |
-
0
- BE BE421813D patent/BE421813A/xx unknown
- NL NL50848D patent/NL50848C/xx active
- BE BE417359D patent/BE417359A/xx unknown
-
1935
- 1935-10-04 FR FR807554D patent/FR807554A/en not_active Expired
-
1936
- 1936-07-29 FR FR48308D patent/FR48308E/en not_active Expired
- 1936-09-24 US US102263A patent/US2168508A/en not_active Expired - Lifetime
- 1936-10-03 GB GB26894/36A patent/GB482724A/en not_active Expired
- 1936-10-03 GB GB19279/37A patent/GB482725A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2477634A (en) * | 1943-07-16 | 1949-08-02 | Donald M Lowe | Keyer circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| FR48308E (en) | 1937-12-27 |
| BE417359A (en) | |
| FR807554A (en) | 1937-01-15 |
| NL50848C (en) | |
| US2168508A (en) | 1939-08-08 |
| GB482725A (en) | 1938-04-04 |
| BE421813A (en) |
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