GB901445A - Improvements in or relating to pulse-generating arrangements - Google Patents

Improvements in or relating to pulse-generating arrangements

Info

Publication number
GB901445A
GB901445A GB339259A GB339259A GB901445A GB 901445 A GB901445 A GB 901445A GB 339259 A GB339259 A GB 339259A GB 339259 A GB339259 A GB 339259A GB 901445 A GB901445 A GB 901445A
Authority
GB
United Kingdom
Prior art keywords
output
transistor
gate
cut
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
GB339259A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 DES56779A priority Critical patent/DE1057661B/en
Priority to DES58291A priority patent/DE1088558B/en
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB901445A publication Critical patent/GB901445A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K5/00Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/15Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors
    • H03K5/15013Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors with more than two outputs
    • H03K5/15026Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors with more than two outputs with asynchronously driven series connected output stages
    • H03K5/15033Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors with more than two outputs with asynchronously driven series connected output stages using a chain of bistable devices
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K5/00Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/156Arrangements in which a continuous pulse train is transformed into a train having a desired pattern
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems
    • H04M19/02Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone, busy tone

Abstract

901,445. Pulse generator circuits. SIEMENSHALSKE A.G. Jan. 30, 1959 [Jan. 31, 1958; May 20, 1958], No. 3392/59. Class 40 (6). In a pulse pattern generator a pulse producing two-state device controls a second such device to produce pulses which are not coterminous with the pulses produced by the first device, the two pulses generated are applied to a gate circuit which produces an output depending on the time relation between the pulses applied to it. As shown in Fig. 3, pulses generated by the free-running multivibrator M1 comprising reciprocally coupled PNP transistors control a bi-stable circuit M2 which itself controls a further bi-stable circuit M3 so that pulse trains as shown in Fig. 2, a, b, c, are produced at their respective outputs. The output from bi-stable device M2 and the inverted output from device M3 are applied to an AND gate K1 comprising resistor R3 and rectifier G2 so that the voltage at the junction of R3, G2 is low only when the right-hand transistor of device M2 and the lefthand transistor of device M3 are both in the cut-off condition. The output of AND gate K1 is applied to the base of transistor T1 which with resistor R5 constitutes a modified AND gate S1. The output of gate S1 is negative when the lefthand transistor of device M1 is cut-off at the same time as the output of AND circuit K1 is positive. Thus the output of the gate K1 is a pulse train, Fig. 2d, and of gate S1 the pulse train of Fig. 2, e. These pulse trains may be used as the free and engaged signals, respectively in an electronic telephone exchange system. As shown in Fig. 3, the output from an audio-frequency generator may be applied to the primary of a transformer U2 and switched on and off by gating circuits comprising diodes G3 and transformer U1 so as to produce modulated audio frequency at the output Z1, Z2. Thus transistor T2 which is directly controlled by the inverted output of the bi-stable circuit M2 is associated with transformers U1 so that if either of the transistors is in the cut-off state the rectifiers G3 are not conductive and the transmissions of signals from the generator via transformer U1 is prevented. The transistor T2 associated with output terminals Z2 is controlled by the output of the modified AND gate S1 so that if the transistor T1 is cut-off (output of the circuit K1 positive), the transistor T2 conducts and is cut-off in synchronism with pulses from multi-vibrator M1 so that the alternating audio voltage from generator is transmitted via transformer U2 in the same rhythm to the output terminals Z2. If transistor T1 is conducting, transistor T2 is cut-off irrespective of the state of multivibrator M1 so that the transistor T2 is cut-off after every three pulses delivered by multivibrator M1 and remains cut-off during the fourth pulse. In the modification shown in Fig. 4, five monostable multivibrators M1 ... M5 are connected in tandem each being controlled by the output of the preceding one. The multivibrator M1 has no delay so that a control voltage at its input Z changes it to the " set " state without delay and when the control voltage is removed it returns to the normal state also without delay. The output from M1 in its " set " state causes multivibrator M2 to be changed to its state with a time delay and when multivibrator M1 returns to its normal state M2 returns to its normal state without delay the further states M3 ... M5 also operate as the stage M2. The respective outputs from the stages M1 ... M5 control the operation of AND and OR gates so that a pulse pattern may be generated as required, Fig. 5 (not shown).
GB339259A 1958-01-31 1959-01-30 Improvements in or relating to pulse-generating arrangements Expired GB901445A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DES56779A DE1057661B (en) 1958-01-31 1958-01-31 Circuitry for generating repetitive pulse groups, particularly for electronic call and signal equipment
DES58291A DE1088558B (en) 1958-01-31 1958-05-20 Circuitry for generating repetitive pulse groups, in particular for flow control in telecommunications systems

Publications (1)

Publication Number Publication Date
GB901445A true GB901445A (en) 1962-07-18

Family

ID=25995479

Family Applications (1)

Application Number Title Priority Date Filing Date
GB339259A Expired GB901445A (en) 1958-01-31 1959-01-30 Improvements in or relating to pulse-generating arrangements

Country Status (5)

Country Link
CH (1) CH379566A (en)
DE (2) DE1057661B (en)
FR (1) FR1222821A (en)
GB (1) GB901445A (en)
NL (1) NL235624A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB905923A (en) * 1959-02-14 1962-09-12 Kanda Tsushin Kogyo Kabushiki Improvements in and relating to a system for the generation and transmission of pulse groups
DE1113013B (en) * 1959-08-29 1961-08-24 Standard Elektrik Lorenz Ag Method for signaling with Tonfrequenzspannungen over the subscriber lines in telephone systems
CH379583A (en) * 1960-03-22 1964-07-15 Autophon Ag Means for generating in particular for the transmission of choice in telephone systems suitable control criteria
DE1179482B (en) * 1960-05-23 1964-10-08 Siemens Ag Albis Selective call system
DE1258446B (en) * 1963-08-28 1968-01-11 Niko Fast Full keyboard controlled selbsttaetiger Morse code transmitter
DE1263111B (en) * 1964-10-23 1968-03-14 Siemens Ag Circuitry for generating cyclically recurring mark certain repetition frequency in telecommunications, in particular telephone exchange systems
DE1261875B (en) * 1965-06-24 1968-02-29 Siemens Ag A circuit arrangement for automatically sending distorted teletype characters
DE1288164B (en) * 1965-10-23 1969-01-30 Robert Bosch Gmbh Elektronik U Circuitry for generating a code- or selective call sign
DE1254197B (en) * 1966-08-10 1967-11-16 Telefunken Patent Circuitry for generating sound sign in telecommunications, in particular telephone systems
DE1294486B (en) * 1966-09-12 1969-05-08 Arnstadt Fernmeldewerk Circuit arrangement for call and signal equipment for generating periodically recurring tone frequency pulse mark
DE1299340B (en) * 1967-09-18 1969-07-17 Siemens Ag A circuit arrangement for delivery of recurring signal sequences
DE2132200C2 (en) * 1971-06-29 1981-12-03 Oskar Prof. Dr.Phil.Habil. 8553 Ebermannstadt De Vierling
AT358105B (en) * 1977-08-17 1980-08-25 Siemens Ag Oesterreich Hard signal control unit for centrally controlled telephone switching devices

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE895539C (en) * 1945-04-05 1953-11-05 Ibm Deutschland Roehrenkippanordnung with cross-coupled circuits

Also Published As

Publication number Publication date
CH379566A (en) 1964-07-15
NL235624A (en)
FR1222821A (en) 1960-06-13
DE1088558B (en) 1960-09-08
DE1057661B (en) 1959-05-21

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