GB663464A - Oscillator for non-sinusoidal waves - Google Patents
Oscillator for non-sinusoidal wavesInfo
- Publication number
- GB663464A GB663464A GB22814/48A GB2281448A GB663464A GB 663464 A GB663464 A GB 663464A GB 22814/48 A GB22814/48 A GB 22814/48A GB 2281448 A GB2281448 A GB 2281448A GB 663464 A GB663464 A GB 663464A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capacitor
- transformer
- grid
- valve
- anode
- 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
- H03K4/06—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
- H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
- H03K4/12—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor
- H03K4/16—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor using a single tube with positive feedback through transformer, e.g. blocking oscillator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Lasers (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
663,464. Saw-tooth generating circuits. RADIO CORPORATION OF AMERICA. Aug. 30, 1948 [Sept. 27, 1947], No. 22814/48. Class 40 (vi). In a blocking oscillator having a transformer coupling the anode to control grid, the anode winding is connected between anode and H.T. + and the grid section in series with a capacitor between grid and H.T. +. A second capacitor connected to the anode being periodically discharged when the valve is rendered conducting. The Figure shows a blocking oscillator circuit in which an auto-transformer 12 provides the normal anode to grid circuit feed-back coupling. When valve 19 is non-conducting due to the negative charge on capacitor 23, capacitor 32 is charged linearly from the H.T. supply via resistors 37, 36. During this period the charge on capacitor 23 leaks away via resistors 53, 54 until just before valve 19 is rendered conducting by the rising grid voltage a negative-going synchronizing pulse 26 applied to the cathode drives the grid positive so that the valve conducts and due to the normal feed-back through transformer 12 capacitor 32 rapidly discharges through valve 19. The control grid is driven highly negative during the discharge of capacitor 32 due to both the negative charge acquired by capacitor 23 and by inductor 12 ringing with the associated stray capacities, the oscillation, however, being damped out by resistor 38 after the first negative potential swing which is of large amplitude, Fig. 3 (not shown), the valve is then cut-off and the cycle is repeated. An. iron-cored auto-transformer may be used with a damping resistor connected across only part of the windings and positive-going synchronizing signals may be applied to the control grid, Fig. 4 (not shown). In a further modification, Fig. 5 (not shown), the synchronizing signals are applied to an auxiliary winding on the coupling transformer and the pulse repetition frequency is adjusted by varying the position of an adjustable core in the auto-transformer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US776465A US2538541A (en) | 1947-09-27 | 1947-09-27 | Saw-tooth wave generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB663464A true GB663464A (en) | 1951-12-19 |
Family
ID=25107449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22814/48A Expired GB663464A (en) | 1947-09-27 | 1948-08-30 | Oscillator for non-sinusoidal waves |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2538541A (en) |
| BE (1) | BE484981A (en) |
| CH (1) | CH279456A (en) |
| ES (1) | ES185166A1 (en) |
| FR (1) | FR970954A (en) |
| GB (1) | GB663464A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2633554A (en) * | 1948-01-24 | 1953-03-31 | Rca Corp | Beam deflection control |
| US2668911A (en) * | 1948-05-19 | 1954-02-09 | Motorola Inc | High voltage generator |
| US3263182A (en) * | 1965-02-12 | 1966-07-26 | Detrex Chem Ind | Pulsed radio-frequency generator |
| CN102098094A (en) * | 2010-11-04 | 2011-06-15 | 董仕 | Method and device for signal period expansion and ultra-high speed row-column conversion |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2083246A (en) * | 1933-12-04 | 1937-06-08 | Willard Rich G | Electronic musical instrument |
| NL62083C (en) * | 1936-02-04 | |||
| US2300451A (en) * | 1940-09-21 | 1942-11-03 | Hazeltine Corp | High-voltage power-supply system |
| US2360697A (en) * | 1942-01-27 | 1944-10-17 | Gen Electric | Saw-tooth wave generation |
| US2419772A (en) * | 1944-06-30 | 1947-04-29 | Rca Corp | Pulse generator system |
-
0
- BE BE484981D patent/BE484981A/xx unknown
-
1947
- 1947-09-27 US US776465A patent/US2538541A/en not_active Expired - Lifetime
-
1948
- 1948-08-30 GB GB22814/48A patent/GB663464A/en not_active Expired
- 1948-08-31 FR FR970954D patent/FR970954A/en not_active Expired
- 1948-09-01 CH CH279456D patent/CH279456A/en unknown
- 1948-09-09 ES ES0185166A patent/ES185166A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES185166A1 (en) | 1949-01-16 |
| FR970954A (en) | 1951-01-11 |
| US2538541A (en) | 1951-01-16 |
| CH279456A (en) | 1951-11-30 |
| BE484981A (en) |
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