JPS5523635A - Digital input circuit - Google Patents

Digital input circuit

Info

Publication number
JPS5523635A
JPS5523635A JP9608978A JP9608978A JPS5523635A JP S5523635 A JPS5523635 A JP S5523635A JP 9608978 A JP9608978 A JP 9608978A JP 9608978 A JP9608978 A JP 9608978A JP S5523635 A JPS5523635 A JP S5523635A
Authority
JP
Japan
Prior art keywords
pulse
signal
input
fed
tey
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
JP9608978A
Other languages
Japanese (ja)
Inventor
Hitoshi Sato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9608978A priority Critical patent/JPS5523635A/en
Publication of JPS5523635A publication Critical patent/JPS5523635A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Electronic Switches (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To reduce the power consumption, to keep lower the temperature rise and to increase the reliability, by constituting the circuit that the semiconductor photo switch in ON and OFF operation from external signal is inserted and the continuous input signal is converted into pulse signal. CONSTITUTION:The input circuit of the rectifier REC is provided with the photo thyristor TEY-PHO. When the input contact X1 is closed and pulse is inputted to the pulse terminal A, TEY-PHO is conducted and the signal by the contact X1 is fed to the voltage dividing resistors R1,R2, and R3. Only when pulse is fed to the terminal A in this case, the input signal is fed to R1 to R3, and data input ''1'' is outputted to the logic IC. Thus, the consumed power is intermittent and the temperature rise by the power consumption can be kept lower.
JP9608978A 1978-08-09 1978-08-09 Digital input circuit Pending JPS5523635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9608978A JPS5523635A (en) 1978-08-09 1978-08-09 Digital input circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9608978A JPS5523635A (en) 1978-08-09 1978-08-09 Digital input circuit

Publications (1)

Publication Number Publication Date
JPS5523635A true JPS5523635A (en) 1980-02-20

Family

ID=14155665

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9608978A Pending JPS5523635A (en) 1978-08-09 1978-08-09 Digital input circuit

Country Status (1)

Country Link
JP (1) JPS5523635A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819031A (en) * 1981-07-28 1983-02-03 Matsushita Electric Works Ltd Input circuit for sequencer
JPS6066130U (en) * 1983-10-12 1985-05-10 オムロン株式会社 Non-contact input circuit
JPS62195802U (en) * 1986-05-30 1987-12-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819031A (en) * 1981-07-28 1983-02-03 Matsushita Electric Works Ltd Input circuit for sequencer
JPS6066130U (en) * 1983-10-12 1985-05-10 オムロン株式会社 Non-contact input circuit
JPS62195802U (en) * 1986-05-30 1987-12-12

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