GB884363A - Improvements relating to two state transistor circuits - Google Patents

Improvements relating to two state transistor circuits

Info

Publication number
GB884363A
GB884363A GB906457A GB906457A GB884363A GB 884363 A GB884363 A GB 884363A GB 906457 A GB906457 A GB 906457A GB 906457 A GB906457 A GB 906457A GB 884363 A GB884363 A GB 884363A
Authority
GB
United Kingdom
Prior art keywords
state
transistor
variations
circuit
temperature
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
GB906457A
Inventor
George Joseph Rolfe
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical 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
Priority to DENDAT1050808D priority Critical patent/DE1050808B/en
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB906457A priority patent/GB884363A/en
Publication of GB884363A publication Critical patent/GB884363A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • H03K3/011—Modifications of generator to compensate for variations in physical values, e.g. voltage, temperature

Landscapes

  • Electronic Switches (AREA)

Abstract

884,363. Transistor circuits. ELECTRIC & MUSICAL INDUSTRIES Ltd. March 13, 1958 [March 20, 1957], No. 9064/57. Class 40(6). In a two state transistor circuit comprising a transistor which has a low impedance in a first, unstable state of the circuit and a high impedance during a second state and having a storage device connected to an electrode thereof for determining the duration of the unstable state, variations in said duration due to variations with temperature of the leakage current to said electrode are reduced by connecting the load impedance of the electrode to a tap of a potentiometer having a temperaturue dependent arm. The Figure shows a mono-stable flip-flop circuit in which transistor Tl is non-conducting in the stable state and T2 non-conducting in the unstable state. Variations of temperature cause variations in the leakage current of transistor T1 during the stable state and this would normally vary the voltage across capacitor C1 and thus the duration of the unstable state of the circuit. To compensate for this the upper end of load resistor R1 is connected to a potentiometer TR1, R6 the upper arm of one which is temperature sensitive so that the collector potential of transistor T1, remains constant. Variations in sensitivity of the circuit with the variations in temperature may be compensated by means of a further temperature dependent resistor TR2. It is stated that the invention is also applicable to free running multi-state circuits.
GB906457A 1957-03-20 1957-03-20 Improvements relating to two state transistor circuits Expired GB884363A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DENDAT1050808D DE1050808B (en) 1957-03-20 Circuit arrangement for reducing the temperature dependence of a flip-flop with two states
GB906457A GB884363A (en) 1957-03-20 1957-03-20 Improvements relating to two state transistor circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB906457A GB884363A (en) 1957-03-20 1957-03-20 Improvements relating to two state transistor circuits

Publications (1)

Publication Number Publication Date
GB884363A true GB884363A (en) 1961-12-13

Family

ID=9864711

Family Applications (1)

Application Number Title Priority Date Filing Date
GB906457A Expired GB884363A (en) 1957-03-20 1957-03-20 Improvements relating to two state transistor circuits

Country Status (2)

Country Link
DE (1) DE1050808B (en)
GB (1) GB884363A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3246258A (en) * 1962-09-10 1966-04-12 United Aircraft Corp Temperature and impedance compensated voltage controlled variable frequency multivibrator
US3253234A (en) * 1962-05-14 1966-05-24 Bell Telephone Labor Inc Free-running multivibrator using a single cross-coupling capacitor

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL266986A (en) * 1960-07-14
DE1149388B (en) * 1960-09-27 1963-05-30 Vakutronik Veb Electronic timer
DE1147625B (en) * 1961-02-02 1963-04-25 Telefunken Patent Multivibrator with temperature-independent switching times
DE1167383B (en) * 1961-08-05 1964-04-09 Merk Ag Telefonbau Friedrich Astable multivibrator with two emitter-connected transistors
DE1216161B (en) * 1963-06-20 1966-05-05 Siemens Ag Circuit arrangement for limiting the inrush current in an electronically operating flasher system
DE1221274B (en) * 1963-09-17 1966-07-21 Licentia Gmbh Frequency-stabilized multivibrator against temperature changes with linear frequency as a function of a variable control voltage obtained via a voltage divider
DE1211252B (en) * 1964-02-03 1966-02-24 Siemens Ag Tilting arrangement for generating periodic pulses, in particular light signals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3253234A (en) * 1962-05-14 1966-05-24 Bell Telephone Labor Inc Free-running multivibrator using a single cross-coupling capacitor
US3246258A (en) * 1962-09-10 1966-04-12 United Aircraft Corp Temperature and impedance compensated voltage controlled variable frequency multivibrator

Also Published As

Publication number Publication date
DE1050808B (en) 1959-02-19

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