GB1124990A - Transistor threshold detector circuit - Google Patents

Transistor threshold detector circuit

Info

Publication number
GB1124990A
GB1124990A GB5180765A GB5180765A GB1124990A GB 1124990 A GB1124990 A GB 1124990A GB 5180765 A GB5180765 A GB 5180765A GB 5180765 A GB5180765 A GB 5180765A GB 1124990 A GB1124990 A GB 1124990A
Authority
GB
United Kingdom
Prior art keywords
capacitor
base
effected
transistors
output 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
GB5180765A
Inventor
Wincenty Bezdel
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB5180765A priority Critical patent/GB1124990A/en
Publication of GB1124990A publication Critical patent/GB1124990A/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
    • H03K3/2826—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 transistors of the complementary type
    • H03K3/2828—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 transistors of the complementary type in an asymmetrical circuit configuration
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K25/00—Pulse counters with step-by-step integration and static storage; Analogous frequency dividers

Abstract

1,124,990. Transistor circuits. STANDARD TELEPHONES & CABLES Ltd. 7 Dec., 1965, No. 51807/65. Heading H3T. [Also in Division G4] Complementary transistors T1, T2 have their emitters coupled together and the collector of T1 connected for D.C. to the base of T2 to form a regenerative loop, the base of T2 being connected to a reference potential and the base of T1 to a capacitor whereby, when the capacitor voltage exceeds the reference by a predetermined amount the transistors conduct. As shown the capacitor voltage may be clamped through D4 but if released may increase until the transistors conduct to discharge the capacitor and produce an output pulse. Repeated pulses will be produced in like manner if the constants are suitably chosen. Charging may be effected from a separate capacitor C7 which, when unclamped through D3 or D5, progressively charges or discharges to a b level through R10 as that the output pulse repetition frequency progressively increases or decreases. Clamping or alternatively gating of the input signal may be effected by a transistor instead of a diode and the basic circuit may be used as a pulse counter by stepwise charging the capacitor (Fig. 4, not shown).
GB5180765A 1965-12-07 1965-12-07 Transistor threshold detector circuit Expired GB1124990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5180765A GB1124990A (en) 1965-12-07 1965-12-07 Transistor threshold detector circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5180765A GB1124990A (en) 1965-12-07 1965-12-07 Transistor threshold detector circuit

Publications (1)

Publication Number Publication Date
GB1124990A true GB1124990A (en) 1968-08-21

Family

ID=10461446

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5180765A Expired GB1124990A (en) 1965-12-07 1965-12-07 Transistor threshold detector circuit

Country Status (1)

Country Link
GB (1) GB1124990A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3193438A1 (en) * 2016-01-15 2017-07-19 Schneider Electric Industries SAS Electrical power supply device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3193438A1 (en) * 2016-01-15 2017-07-19 Schneider Electric Industries SAS Electrical power supply device
FR3046890A1 (en) * 2016-01-15 2017-07-21 Schneider Electric Ind Sas POWER SUPPLY DEVICE

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