GB1058682A – Improvements in or relating to schmitt trigger circuits
– Google Patents
GB1058682A – Improvements in or relating to schmitt trigger circuits
– Google Patents
Improvements in or relating to schmitt trigger circuits
Info
Publication number
GB1058682A
GB1058682A
GB9820/64A
GB982064A
GB1058682A
GB 1058682 A
GB1058682 A
GB 1058682A
GB 9820/64 A
GB9820/64 A
GB 9820/64A
GB 982064 A
GB982064 A
GB 982064A
GB 1058682 A
GB1058682 A
GB 1058682A
Authority
GB
United Kingdom
Prior art keywords
collector
schmitt trigger
potential
base
transistor
Prior art date
1963-03-07
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
GB9820/64A
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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.)
1963-03-07
Filing date
1964-03-09
Publication date
1967-02-15
1964-03-09
Application filed by International Business Machines Corp
filed
Critical
International Business Machines Corp
1967-02-15
Publication of GB1058682A
publication
Critical
patent/GB1058682A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H03K3/286—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 bistable
H03K3/2893—Bistables with hysteresis, e.g. Schmitt trigger
Abstract
1,058,682. Transistor Schmitt trigger circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 9, 1964 [March 7, 1963], No. 9820/64. Heading H3T. The collector to base coupling of a transistorized Schmitt trigger includes a transistor so arranged that when the circuit is in its stable states the base potential is independent of the collector potential. As shown, the coupling between the collector 36 and the base of 31 is effected by an emitter coupled pair 52, 61 of which one or other transistor is normally non- conductive depending on the state of the circuit so that the base potential of 31 is independent of the potential of collector 36 and the transistors may thus all be operated in a non- saturated mode.
GB9820/64A
1963-03-07
1964-03-09
Improvements in or relating to schmitt trigger circuits
Expired
GB1058682A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US263610A
US3300654A
(en)
1963-03-07
1963-03-07
Schmitt trigger with active collector to base coupling
Publications (1)
Publication Number
Publication Date
GB1058682A
true
GB1058682A
(en)
1967-02-15
Family
ID=23002498
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB9820/64A
Expired
GB1058682A
(en)
1963-03-07
1964-03-09
Improvements in or relating to schmitt trigger circuits
Country Status (3)
Country
Link
US
(1)
US3300654A
(en)
DE
(1)
DE1197925B
(en)
GB
(1)
GB1058682A
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3443127A
(en)
*
1965-12-06
1969-05-06
Litton Systems Inc
Buffered emitter-coupled trigger circuit
Family Cites Families (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE1065876B
(en)
*
1957-12-23
1959-09-24
IBM Deutschland Internationale Büro-Maschinen Gesellschaft m.b.H., Sindelfingen (Württ.)
Circuit with a transistor and a constant current source
US2987632A
(en)
*
1958-07-18
1961-06-06
Gen Electric
Monostable multivibrator with emitterfollower feedback transistor and isolated charging capacitor
US3214602A
(en)
*
1959-12-07
1965-10-26
Ibm
Multivibrator pulse generator
US3084266A
(en)
*
1960-05-27
1963-04-02
Sylvania Electric Prod
Monostable multivibrator using emitter-follower feedback timing circuit
DE1131729B
(en)
*
1960-09-06
1962-06-20
Telefunken Patent
Asymmetrical astable transistor multivibrator
US3188489A
(en)
*
1962-03-27
1965-06-08
Rca Corp
Monostable multivibrator having emitter follower feedback controlled by a timing network
US3191069A
(en)
*
1963-01-07
1965-06-22
Bell Telephone Labor Inc
Monostable multivibrator utilizing common-base transistor to provide isolation between timing network and switching transistor
1963
1963-03-07
US
US263610A
patent/US3300654A/en
not_active
Expired – Lifetime
1964
1964-02-22
DE
DEJ25322A
patent/DE1197925B/en
active
Pending
1964-03-09
GB
GB9820/64A
patent/GB1058682A/en
not_active
Expired
Also Published As
Publication number
Publication date
DE1197925B
(en)
1965-08-05
US3300654A
(en)
1967-01-24
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