GB697147A - Improvements in or relating to sawtooth oscillation-generators - Google Patents

Improvements in or relating to sawtooth oscillation-generators

Info

Publication number
GB697147A
GB697147A GB24951/51A GB2495151A GB697147A GB 697147 A GB697147 A GB 697147A GB 24951/51 A GB24951/51 A GB 24951/51A GB 2495151 A GB2495151 A GB 2495151A GB 697147 A GB697147 A GB 697147A
Authority
GB
United Kingdom
Prior art keywords
valve
circuit
saw
oct
resistor
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
GB24951/51A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical 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
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB697147A publication Critical patent/GB697147A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electrotherapy Devices (AREA)

Abstract

697,147. Saw-tooth generating circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 25, 1951 [Oct. 28, 1950], No. 24951/51. Class 40 (vi). The invention relates to saw-tooth generators of the type in which a capacitor 2 is charged through a resistor 4 and discharged rapidly through a valve having its screen and control grids coupled to a circuit to cause it to oscillate continuously and so to render the valve conducting for a short portion of the oscillation cycle. According to the invention a resistor 3 is included in series with the capacitor across the valve to produce a negative voltage pulse during the flyback and the circuit constants are such that the load lines intersect the steep portion of the anode current/anode voltage characteristics. The negative pulse does not then follow the sinusoidal shape of the grid voltage and is substantially rectangular. As the valve only conducts for a very short period the frequency of operation depends only on the tuned circuit and is very stable.
GB24951/51A 1950-10-28 1951-10-25 Improvements in or relating to sawtooth oscillation-generators Expired GB697147A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL697147X 1950-10-28

Publications (1)

Publication Number Publication Date
GB697147A true GB697147A (en) 1953-09-16

Family

ID=19808911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24951/51A Expired GB697147A (en) 1950-10-28 1951-10-25 Improvements in or relating to sawtooth oscillation-generators

Country Status (3)

Country Link
FR (1) FR1044217A (en)
GB (1) GB697147A (en)
NL (1) NL156939C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922121A (en) * 1957-03-25 1960-01-19 Carroll E Tschiegg Gated beam tube relaxation oscillator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922121A (en) * 1957-03-25 1960-01-19 Carroll E Tschiegg Gated beam tube relaxation oscillator

Also Published As

Publication number Publication date
FR1044217A (en) 1953-11-16
NL156939C (en)

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