GB661563A - Improvements in or relating to circuits for generating sawtooth waveforms - Google Patents
Improvements in or relating to circuits for generating sawtooth waveformsInfo
- Publication number
- GB661563A GB661563A GB1680648A GB1680648A GB661563A GB 661563 A GB661563 A GB 661563A GB 1680648 A GB1680648 A GB 1680648A GB 1680648 A GB1680648 A GB 1680648A GB 661563 A GB661563 A GB 661563A
- Authority
- GB
- United Kingdom
- Prior art keywords
- saw
- capacitor
- tooth
- resistor
- grid
- 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)
- Generation Of Surge Voltage And Current (AREA)
- Particle Accelerators (AREA)
Abstract
661,563. Saw-tooth generating circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 2, 1949 [June 23, 1948; Aug. 19, 1948], Nos. 16806/48 and 21895/48. Class 40 (vi). A saw-tooth wave of desired linearity or curvature is generated by charging two capacitors and discharging them through different electrodes of a valve, integrating one of the saw-tooth waves, thereby produced and adding it to the other. A capacitor 4, Fig. 1, of the Provisional Specification is charged through a resistor 2 and rapidly discharged by a valve 1 arranged in a blocking oscillator circuit. The saw-tooth wave generated at the grid is integrated by means of a resistor 12 and the capacitor 4, thereby linearizing the saw-tooth voltage produced across this capacitor. Resistor 12 may be connected either to the anode as shown or to a further capacitor connected between the lower plate of capacitor 4 and earth Fig. 4 (not shown). In Fig. 5 the separate saw-tooth wave is generated by charging a capacitor 22 through a resistor 21 and partly discharging it through the screen-grid cathode path of the blocking oscillator valve so that the potential applied to a resistor 20 and a capacitor 19 is composed of a steady component and a superimposed saw-tooth component. The output is applied through a coupling circuit 24, 25 to the succeeding apparatus 23 and the synchronizing signal is fed to winding 26. The saw-tooth wave generated at the screen grid may be applied instead to the control grid to increase the linearity of the wave fed from the grid to the output capacitor in the Fig. 1 circuit.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL89183D NL89183C (en) | 1948-06-23 | ||
GB1680648A GB661563A (en) | 1948-06-23 | 1948-06-23 | Improvements in or relating to circuits for generating sawtooth waveforms |
FR989435D FR989435A (en) | 1948-06-23 | 1949-06-22 | Circuit generating sawtooth waves |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1680648A GB661563A (en) | 1948-06-23 | 1948-06-23 | Improvements in or relating to circuits for generating sawtooth waveforms |
GB2189548 | 1948-08-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB661563A true GB661563A (en) | 1951-11-21 |
Family
ID=26252253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1680648A Expired GB661563A (en) | 1948-06-23 | 1948-06-23 | Improvements in or relating to circuits for generating sawtooth waveforms |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR989435A (en) |
GB (1) | GB661563A (en) |
NL (1) | NL89183C (en) |
-
0
- NL NL89183D patent/NL89183C/xx active
-
1948
- 1948-06-23 GB GB1680648A patent/GB661563A/en not_active Expired
-
1949
- 1949-06-22 FR FR989435D patent/FR989435A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR989435A (en) | 1951-09-10 |
NL89183C (en) |
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