GB1030074A - Push-button-operated electrical control circuit arrangements - Google Patents

Push-button-operated electrical control circuit arrangements

Info

Publication number
GB1030074A
GB1030074A GB3687064A GB3687064A GB1030074A GB 1030074 A GB1030074 A GB 1030074A GB 3687064 A GB3687064 A GB 3687064A GB 3687064 A GB3687064 A GB 3687064A GB 1030074 A GB1030074 A GB 1030074A
Authority
GB
United Kingdom
Prior art keywords
button
signal
push
digit
circuit
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
GB3687064A
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
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB1030074A publication Critical patent/GB1030074A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Push-Button Switches (AREA)

Abstract

1,030,074. Substation circuit. SIEMENS & HALSKE A.G. Sept. 9, 1964 [Sept. 11, 1963], No. 36870/64. Headings H3T and H4K. [Also in Division G1] In a push-button telephone subscriber station an audio signal is given after a button has been actuated to confirm the operation of the associated digit signalling components. In one arrangement shown in Fig. 1, each button is a variable capacitor SKI ... SKn such that when the operators' finger is placed upon it the reactance falls and allows the associated glow discharge tube Gl1 ... Gln to ignite; the subsequent drop in resistance of the photosensitive resistor F1 . . . Fn actuates the digit switching relays A1 . . . An. The voltage across R2 delivered through the differentiating circuit C, D, produces a short audible signal in the station signal device T, which is connected to the keyboard on raising the switch hook contacts W1, W2. In a second arrangement, having a normal push-button keyboard (Fig. 2), the audible signal is produced by the amplifier in the subscriber station which is made to oscillate each time a button is pressed by shunting the negative feedback resistor R GK by the tuned circuit C1, L1 as the Zener diode Z breaks down. The oscillations are monitored through the receiver H and their frequency is determined by C1, L1. The break-down voltage to the diode is applied from button contacts a1 ... a0 through a differentiating circuit C D , to produce only a short signal. The buttons also actuate the digit signal relays A1 . . . A0. With no button pressed the combined effect of the negative feedback from R GK and the positive from R MK produces no oscillations and the speech signals are amplified in the normal way.
GB3687064A 1963-09-11 1964-09-09 Push-button-operated electrical control circuit arrangements Expired GB1030074A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES87233A DE1179264B (en) 1963-09-11 1963-09-11 Circuit arrangement for telephone stations with control keyboard

Publications (1)

Publication Number Publication Date
GB1030074A true GB1030074A (en) 1966-05-18

Family

ID=7513609

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3687064A Expired GB1030074A (en) 1963-09-11 1964-09-09 Push-button-operated electrical control circuit arrangements

Country Status (6)

Country Link
BE (1) BE652976A (en)
CH (1) CH423889A (en)
DE (1) DE1179264B (en)
GB (1) GB1030074A (en)
NL (1) NL145737B (en)
SE (1) SE368894B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107800419A (en) * 2016-09-07 2018-03-13 宏百贸易有限公司 A kind of button, electronic circuit, keyboard

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107800419A (en) * 2016-09-07 2018-03-13 宏百贸易有限公司 A kind of button, electronic circuit, keyboard

Also Published As

Publication number Publication date
CH423889A (en) 1966-11-15
BE652976A (en) 1965-03-11
NL6410546A (en) 1965-03-12
SE368894B (en) 1974-07-22
DE1179264B (en) 1964-10-08
NL145737B (en) 1975-04-15

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