DE1242703B - Steuerschaltung fuer das Ein- und Ausschalten von Telefonanrufbeantwortungs- und -anruf-Aufzeichnungsgeraeten - Google Patents

Steuerschaltung fuer das Ein- und Ausschalten von Telefonanrufbeantwortungs- und -anruf-Aufzeichnungsgeraeten

Info

Publication number
DE1242703B
DE1242703B DEF33583A DEF0033583A DE1242703B DE 1242703 B DE1242703 B DE 1242703B DE F33583 A DEF33583 A DE F33583A DE F0033583 A DEF0033583 A DE F0033583A DE 1242703 B DE1242703 B DE 1242703B
Authority
DE
Germany
Prior art keywords
capacitor
control
switching device
circuit
charging
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.)
Pending
Application number
DEF33583A
Other languages
German (de)
English (en)
Inventor
Claude M Faust
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.)
KWF Industries Inc
Original Assignee
KWF Industries Inc
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 KWF Industries Inc filed Critical KWF Industries Inc
Publication of DE1242703B publication Critical patent/DE1242703B/de
Pending 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
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H04M1/654—Telephone line monitoring circuits therefor, e.g. ring detectors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching
    • 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
    • H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
    • H03K3/57—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a semiconductor device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
DEF33583A 1960-04-01 1961-04-01 Steuerschaltung fuer das Ein- und Ausschalten von Telefonanrufbeantwortungs- und -anruf-Aufzeichnungsgeraeten Pending DE1242703B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19314A US3119027A (en) 1960-04-01 1960-04-01 Signal actuated control circuit

Publications (1)

Publication Number Publication Date
DE1242703B true DE1242703B (de) 1967-06-22

Family

ID=21792559

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF33583A Pending DE1242703B (de) 1960-04-01 1961-04-01 Steuerschaltung fuer das Ein- und Ausschalten von Telefonanrufbeantwortungs- und -anruf-Aufzeichnungsgeraeten

Country Status (6)

Country Link
US (1) US3119027A (it)
BE (1) BE601953A (it)
DE (1) DE1242703B (it)
FR (1) FR1281078A (it)
NL (2) NL260729A (it)
SE (1) SE310899B (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226563A (en) * 1961-03-08 1965-12-28 John C Lovci Teletype current supply system
US3217172A (en) * 1961-08-01 1965-11-09 Burroughs Corp Delay circuit employing coupling circuit between two time delay circuits
US3341712A (en) * 1963-01-23 1967-09-12 Fifth Dimension Inc Current sensing timing circuits
US3284791A (en) * 1963-03-25 1966-11-08 Aseco Inc Near alarm receiver having-time delay of discharge type
US3286101A (en) * 1963-10-16 1966-11-15 Massachusetts Inst Technology Sample and hold circuit
US3505541A (en) * 1966-07-29 1970-04-07 Rca Corp Electronic timer
US3482148A (en) * 1966-12-28 1969-12-02 Bell Telephone Labor Inc Pulse driven circuit for activating an electromagnetic device during and for a predetermined interval longer than the input pulse width
US3577087A (en) * 1968-09-27 1971-05-04 Rca Corp Sequence {37 and{38 {0 gate with resetting means
US3584240A (en) * 1969-04-02 1971-06-08 Rca Corp Trigger pulse circuits
US3604956A (en) * 1969-07-01 1971-09-14 Us Navy Radiation immune timing circuit
US3600610A (en) * 1969-07-09 1971-08-17 Xerox Corp Time delay circuit for a radiant energy protective apparatus
US3852646A (en) * 1970-12-28 1974-12-03 Design Elements Inc Solenoid drive circuit
US4330720A (en) * 1978-11-24 1982-05-18 Gould Inc. Electrographic recording apparatus employing an improved drive circuit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE483166A (it) * 1944-04-24
US2617024A (en) * 1948-08-31 1952-11-04 Rca Corp Time delay circuits
US2653233A (en) * 1951-08-25 1953-09-22 Westinghouse Electric Corp Electrical apparatus
US2845548A (en) * 1956-04-25 1958-07-29 Westinghouse Electric Corp Static time delay circuit
US2902658A (en) * 1957-05-01 1959-09-01 Electrocircuits Inc Apparatus for generating frequency modulated signals
US2998532A (en) * 1958-05-21 1961-08-29 Thompson Ramo Wooldridge Inc Linear ramp voltage wave shape generator

Also Published As

Publication number Publication date
NL122369C (it)
FR1281078A (fr) 1962-01-08
US3119027A (en) 1964-01-21
SE310899B (it) 1969-05-19
NL260729A (it)
BE601953A (fr) 1961-07-17

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