GB1040697A - Pulse train generator including a tunnel diode - Google Patents

Pulse train generator including a tunnel diode

Info

Publication number
GB1040697A
GB1040697A GB4325861A GB4325861A GB1040697A GB 1040697 A GB1040697 A GB 1040697A GB 4325861 A GB4325861 A GB 4325861A GB 4325861 A GB4325861 A GB 4325861A GB 1040697 A GB1040697 A GB 1040697A
Authority
GB
United Kingdom
Prior art keywords
pulse
tunnel diode
waveform
pulses
circuit
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
GB4325861A
Inventor
Norman Wilfred Brooks
Gordon Haynes
Ian George Edgar Gilroy
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.)
Rank Bush Murphy Ltd
Original Assignee
Rank Bush Murphy 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 Rank Bush Murphy Ltd filed Critical Rank Bush Murphy Ltd
Priority to GB4325861A priority Critical patent/GB1040697A/en
Publication of GB1040697A publication Critical patent/GB1040697A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03K3/28—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 means other than a transformer for feedback
    • H03K3/281—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 means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/282—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 means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Pulse Circuits (AREA)

Abstract

1,040,697. Semi-conductor pulse circuits. RANK-BUSH MURPHY Ltd. Dec. 4, 1962 [Dec. 4, 1961], No. 43258/61. Heading H3T. In a pulse generator, short duration pulses are produced by differentiating longer duration pulses from a tunnel diode, the capacitance of the tunnel diode circuit being varied so as to produce a substantial difference between the times of rise and fall of the longer duration pulse. This ensures that the differentiating circuit produces a shorter duration pulse only at the time of the leading (or trailing) edge of the longer duration pulse. As shown, the output of a crystal oscillator 21 at 100 kc/s. is passed via an emitter follower 28 to a tunnel diode 32 where it is converted into waveform B (Fig. 2). Waveform B is differentiated at 34 giving waveform E having both positive and negative pulses. The oscillator output A is also fed via an emitter follower 38 and a delay circuit 42 to a switching transistor 46 which is made conductive during the time indicated by the solid pulse at C. Capacitor 50 is then connected across tunnel diode 32 during this time hence the slope of the trailing edge of waveform B is reduced as shown at D. The negative pulses 13 from the differentiating circuit are thus substantially eliminated. Alternatively the positive pulses 11 may be eliminated by altering the delay introduced at 42 so that capacitor 50 is connected across the tunnel diode 32 during the leading edge of the pulse. The circuit may be employed to generate a harmonic spectrum.
GB4325861A 1961-12-04 1961-12-04 Pulse train generator including a tunnel diode Expired GB1040697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4325861A GB1040697A (en) 1961-12-04 1961-12-04 Pulse train generator including a tunnel diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4325861A GB1040697A (en) 1961-12-04 1961-12-04 Pulse train generator including a tunnel diode

Publications (1)

Publication Number Publication Date
GB1040697A true GB1040697A (en) 1966-09-01

Family

ID=10427967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4325861A Expired GB1040697A (en) 1961-12-04 1961-12-04 Pulse train generator including a tunnel diode

Country Status (1)

Country Link
GB (1) GB1040697A (en)

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