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GB1149135A - Pulse generator - Google Patents

Pulse generator

Info

Publication number
GB1149135A
GB1149135A GB4367067A GB4367067A GB1149135A GB 1149135 A GB1149135 A GB 1149135A GB 4367067 A GB4367067 A GB 4367067A GB 4367067 A GB4367067 A GB 4367067A GB 1149135 A GB1149135 A GB 1149135A
Authority
GB
United Kingdom
Prior art keywords
iii
schmitt trigger
turns
constant
pulse
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
GB4367067A
Inventor
Konrad Sittig
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.)
Starkstrom Anlagenbau VEB
Original Assignee
Starkstrom Anlagenbau VEB
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 DE1967V0034360 priority Critical patent/DE1295634B/en
Priority to NL6712185A priority patent/NL6712185A/xx
Application filed by Starkstrom Anlagenbau VEB filed Critical Starkstrom Anlagenbau VEB
Priority to GB4367067A priority patent/GB1149135A/en
Publication of GB1149135A publication Critical patent/GB1149135A/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)
  • Manipulation Of Pulses (AREA)
  • Generation Of Surge Voltage And Current (AREA)

Abstract

1,149,135. Transistor pulse generators. STARKSTROM-ANLAGENBAU KARL-MARX. STADT VEB. 26 Sept., 1967, No. 43670/67. Heading H3T. In a pulse generator having a sawtooth Schmitt trigger generator I with a variable time constant R.C. integrating network R1/I, C1/I feeding via an impedance transformer II a further Schmitt trigger III, the Schmitt trigger III has its common emitter resistor replaced by a transistor T8 which has its collector current adjustable to a constant value by means of a voltage divider III.1 and the base of the output transistor T7 of the Schmitt trigger III is connected to a potentiometer III.2 for adjustment of the pulse duration to space ratio. When the supply E.M.F. is connected the potential at B rises negatively due to C1/I charging and when a certain value is reached the Schmitt trigger circuit I.1 changes state, T2 turns ON and T3 turns OFF. The negative going output at C is coupled via Zener diode D1 to the base of T4 which together with T5 turn ON so that the capacitor C1/I is discharged via T5. The trigger circuit I.1 then assumes its initial state and the above operation is repeated. When the sawtooth voltage produced at B reaches a certain value the Schmitt trigger III changes state T6 turns ON and T7 turns OFF. T6 remains on until the sawtooth voltage falls in value when the trigger circuit III returns to its initial state. This process is repeated to produce a pulse output at D of constant amplitude, the duration to space ratio being set by the adjustment of III.2. Zener diode D2 maintains the potential at G constant.
GB4367067A 1967-08-31 1967-09-26 Pulse generator Expired GB1149135A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1967V0034360 DE1295634B (en) 1967-08-31 1967-08-31 Pulse generator for pulses of constant amplitude with variable duty cycle
NL6712185A NL6712185A (en) 1967-08-31 1967-09-05
GB4367067A GB1149135A (en) 1967-08-31 1967-09-26 Pulse generator

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1967V0034360 DE1295634B (en) 1967-08-31 1967-08-31 Pulse generator for pulses of constant amplitude with variable duty cycle
NL6712185A NL6712185A (en) 1967-08-31 1967-09-05
GB4367067A GB1149135A (en) 1967-08-31 1967-09-26 Pulse generator

Publications (1)

Publication Number Publication Date
GB1149135A true GB1149135A (en) 1969-04-16

Family

ID=27213368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4367067A Expired GB1149135A (en) 1967-08-31 1967-09-26 Pulse generator

Country Status (3)

Country Link
DE (1) DE1295634B (en)
GB (1) GB1149135A (en)
NL (1) NL6712185A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549827C2 (en) * 1975-11-04 1982-08-05 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Pulse width control

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB582095A (en) * 1943-12-18 1946-11-05 Eric Lawrence Casling White Improvements in or relating to electrical timing circuits
DE1127395B (en) * 1958-12-05 1962-04-12 Merk Ag Telefonbau Friedrich Multivibrator for generating a low-frequency pulse train with an extremely large pulse duty factor
DE1115292B (en) * 1959-10-09 1961-10-19 Telefunken Patent Arrangement for bounce-free closing and opening of a circuit
DE1186495B (en) * 1962-12-04 1965-02-04 Bayer Ag Multivibrator circuit with electronically adjustable pulse duration

Also Published As

Publication number Publication date
NL6712185A (en) 1969-03-07
DE1295634B (en) 1969-05-22

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