GB1285030A - Thyristor pulse generator - Google Patents

Thyristor pulse generator

Info

Publication number
GB1285030A
GB1285030A GB5574768A GB5574768A GB1285030A GB 1285030 A GB1285030 A GB 1285030A GB 5574768 A GB5574768 A GB 5574768A GB 5574768 A GB5574768 A GB 5574768A GB 1285030 A GB1285030 A GB 1285030A
Authority
GB
United Kingdom
Prior art keywords
capacitor
thyristor
resistors
circuit
nov
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
GB5574768A
Inventor
William Mcquiggin
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB5574768A priority Critical patent/GB1285030A/en
Publication of GB1285030A publication Critical patent/GB1285030A/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
    • H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
    • H03K3/351—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region the devices being unijunction transistors

Landscapes

  • Generation Of Surge Voltage And Current (AREA)

Abstract

1285030 Semi-conductor pulse generators POST OFFICE 20 Nov 1969 [25 Nov 1968] 55747/68 Heading H3T A pulse generator comprises a unijunction transistor relaxation oscillator driving a thyristor bi-stable circuit 1, 2, 9 and additional means for alternately discharging and enabling the charging of the capacitor of the relaxation circuit. When the power supply is connected to the generator, thyristor 2 is triggered through a capacitor 15. Capacitor 21 charges through resistors 23, 24 until transistor 10 breaks down and delivers pulses through resistors 11, 12 (which may be replaced by diodes) to the gates of thyristors 1, 2. Thyristor 1 is triggered, energizing a relay coil R and commutating thyristor 2 via 9. Relay contacts R1, R2 act to switch a capacitor 22, equal in value to 21, into the oscillator circuit and to discharge capacitor 21. With thyristor 1 on, a diode 26 is forwardbiased, and capacitor 22 is charged through resistors 6, 25, low in value relatively to 23, 24. An RF interference suppression choke may be connected to the positive supply conductor 5.
GB5574768A 1968-11-25 1968-11-25 Thyristor pulse generator Expired GB1285030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5574768A GB1285030A (en) 1968-11-25 1968-11-25 Thyristor pulse generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5574768A GB1285030A (en) 1968-11-25 1968-11-25 Thyristor pulse generator

Publications (1)

Publication Number Publication Date
GB1285030A true GB1285030A (en) 1972-08-09

Family

ID=10474775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5574768A Expired GB1285030A (en) 1968-11-25 1968-11-25 Thyristor pulse generator

Country Status (1)

Country Link
GB (1) GB1285030A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees