GB959796A - Blocking oscillator circuits - Google Patents

Blocking oscillator circuits

Info

Publication number
GB959796A
GB959796A GB389461A GB389461A GB959796A GB 959796 A GB959796 A GB 959796A GB 389461 A GB389461 A GB 389461A GB 389461 A GB389461 A GB 389461A GB 959796 A GB959796 A GB 959796A
Authority
GB
United Kingdom
Prior art keywords
transistor
sawtooth
blocking oscillator
output
feb
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
GB389461A
Inventor
Ladislav Lax
Ranjit Ranjan Dutta Gupta
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.)
Pye Electronic Products Ltd
Original Assignee
Pye 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 Pye Ltd filed Critical Pye Ltd
Priority to GB389461A priority Critical patent/GB959796A/en
Publication of GB959796A publication Critical patent/GB959796A/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
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/50—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor
    • H03K4/54—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor using a single semiconductor device with positive feedback through a transformer, e.g. blocking oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/30—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using a transformer for feedback, e.g. blocking oscillator

Abstract

959,796. Transistor sawtooth oscillators. PYE Ltd. Feb. 1, 1962 [Feb. 1, 1961], No. 3894/61. Heading H3T. A sawtooth generator comprises a transistor T1 connected as a blocking oscillator, the frequency of which is determined by capacitor C1 and transistor T2, the oscillator output being fed to a buffer amplifier T3, feedback being provided from the output circuit of T3 to T2. The linearity of the output sawtooth waveform may be adjusted by potentiometer R6 and may be over-corrected to suit the geometry of a cathode-ray tube when the invention is applied to a line time base in a television receiver. The frequency may be adjusted by variation of resistor R4. Specification 921,221 is referred to.
GB389461A 1961-02-01 1961-02-01 Blocking oscillator circuits Expired GB959796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB389461A GB959796A (en) 1961-02-01 1961-02-01 Blocking oscillator circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB389461A GB959796A (en) 1961-02-01 1961-02-01 Blocking oscillator circuits

Publications (1)

Publication Number Publication Date
GB959796A true GB959796A (en) 1964-06-03

Family

ID=9766880

Family Applications (1)

Application Number Title Priority Date Filing Date
GB389461A Expired GB959796A (en) 1961-02-01 1961-02-01 Blocking oscillator circuits

Country Status (1)

Country Link
GB (1) GB959796A (en)

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