GB627411A - Improvements in or relating to time base circuits - Google Patents
Improvements in or relating to time base circuitsInfo
- Publication number
- GB627411A GB627411A GB291247A GB291247A GB627411A GB 627411 A GB627411 A GB 627411A GB 291247 A GB291247 A GB 291247A GB 291247 A GB291247 A GB 291247A GB 627411 A GB627411 A GB 627411A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- signal
- saw
- output
- tooth
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Particle Accelerators (AREA)
Abstract
627,411. Cathode-ray oscillographs. CINEMATELEVISION, Ltd., and SOWERBY, J. M. Jan. 30, 1947, No. 2912. [Class 37] [Also in Group XL (c)] A time base generator for a cathode-ray oscilloscope is synchronized at a frequency which is a submultiple of the repetition fre. quency of the signal to be examined by deriving pulses of an appropriate frequency from the signal. The Figure shows a time-base circuit for an oscillograph including a Puckle type hard valve time-base, comprising valves 1, 2 and 3. The signal to be examined is converted to a pulse waveform for synchronizing by a device 10 whose output is applied to the suppressor grid of phase reversing valve 3 via a cathode follower 9. The device 10 may be of the type described in Specification 572,884, [Group XL]. In order to prevent a falling off in the saw-tooth amplitude when the signal and hence the saw-tooth frequency increases, a bias proportional to the output potential is fed to linearizing pentode 1 in such a sense as to increase the current through it when the output frequency increases. The bias is derived by feeding the saw-tooth output to a rectifier 23 via a cathode follower 13. A voltage delay is provided in the rectifier circuit by biassing the cathode positively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR960165D FR960165A (en) | 1947-01-30 | ||
| GB291247A GB627411A (en) | 1947-01-30 | 1947-01-30 | Improvements in or relating to time base circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB291247A GB627411A (en) | 1947-01-30 | 1947-01-30 | Improvements in or relating to time base circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB627411A true GB627411A (en) | 1949-08-09 |
Family
ID=9748409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB291247A Expired GB627411A (en) | 1947-01-30 | 1947-01-30 | Improvements in or relating to time base circuits |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR960165A (en) |
| GB (1) | GB627411A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1076262B (en) * | 1957-01-25 | 1960-02-25 | Philips Nv | Time base switch for an electron beam oscillograph |
-
0
- FR FR960165D patent/FR960165A/fr not_active Expired
-
1947
- 1947-01-30 GB GB291247A patent/GB627411A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1076262B (en) * | 1957-01-25 | 1960-02-25 | Philips Nv | Time base switch for an electron beam oscillograph |
Also Published As
| Publication number | Publication date |
|---|---|
| FR960165A (en) | 1950-04-14 |
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