GB968677A - Improvements in or relating to transistor multivibrators - Google Patents

Improvements in or relating to transistor multivibrators

Info

Publication number
GB968677A
GB968677A GB2266560A GB2266560A GB968677A GB 968677 A GB968677 A GB 968677A GB 2266560 A GB2266560 A GB 2266560A GB 2266560 A GB2266560 A GB 2266560A GB 968677 A GB968677 A GB 968677A
Authority
GB
United Kingdom
Prior art keywords
collector
transistor
output device
emitter
current
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
GB2266560A
Inventor
James George Taylor
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB2266560A priority Critical patent/GB968677A/en
Priority to FR865861A priority patent/FR1302488A/en
Publication of GB968677A publication Critical patent/GB968677A/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
    • H03K3/2823—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 using two active transistor of the same conductivity type
    • 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)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Dc-Dc Converters (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

968,677. Transistor oscillator circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 16, 1961 [June 28, 1960], No. 22665/60. Heading H3T. A multivibrator comprises a pair of crosscoupled transistors VT1, VT2 having collector resistors R3, R4 connected to a first supply terminal; cross-coupling capacitors C1, C2 extending between the base of each transistor and a junction point in the collector circuit of the other between its collector and collector resistor; and a current responsive output device directly connected in series with the collector-emitter path of one of the transistors at a point between the junction point and the other supply terminal, whereby the input current path of the output device is traversed by the transistor's emitter-collector current, including the capacitor charging current, so that the charging current is ineffective to distort the wave shape of the output. As described, the output device may be a further transistor VT3 connected on the emitter circuit of VT2, Fig. 1, or a ferrite cored transformer in its collector circuit, Fig. 2.
GB2266560A 1960-06-28 1960-06-28 Improvements in or relating to transistor multivibrators Expired GB968677A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2266560A GB968677A (en) 1960-06-28 1960-06-28 Improvements in or relating to transistor multivibrators
FR865861A FR1302488A (en) 1960-06-28 1961-06-23 Improvements to transistor multivibrators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2266560A GB968677A (en) 1960-06-28 1960-06-28 Improvements in or relating to transistor multivibrators

Publications (1)

Publication Number Publication Date
GB968677A true GB968677A (en) 1964-09-02

Family

ID=10183112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2266560A Expired GB968677A (en) 1960-06-28 1960-06-28 Improvements in or relating to transistor multivibrators

Country Status (1)

Country Link
GB (1) GB968677A (en)

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