GB661563A - Improvements in or relating to circuits for generating sawtooth waveforms - Google Patents

Improvements in or relating to circuits for generating sawtooth waveforms

Info

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
Application number
GB1680648A
Inventor
Charles Leslie Faud Ell
Eric William Bull
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrical and Musical Industries Ltd
Original Assignee
Electrical and Musical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NL89183D priority Critical patent/NL89183C/xx
Application filed by Electrical and Musical Industries Ltd filed Critical Electrical and Musical Industries Ltd
Priority to GB1680648A priority patent/GB661563A/en
Priority to FR989435D priority patent/FR989435A/en
Publication of GB661563A publication Critical patent/GB661563A/en
Expired legal-status Critical Current

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.
GB1680648A 1948-06-23 1948-06-23 Improvements in or relating to circuits for generating sawtooth waveforms Expired GB661563A (en)

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)

Also Published As

Publication number Publication date
FR989435A (en) 1951-09-10
NL89183C (en)

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