JPS55114036A - Power-saving time switch - Google Patents

Power-saving time switch

Info

Publication number
JPS55114036A
JPS55114036A JP2171579A JP2171579A JPS55114036A JP S55114036 A JPS55114036 A JP S55114036A JP 2171579 A JP2171579 A JP 2171579A JP 2171579 A JP2171579 A JP 2171579A JP S55114036 A JPS55114036 A JP S55114036A
Authority
JP
Japan
Prior art keywords
capacitor
time
scr
turn
constant current
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
JP2171579A
Other languages
Japanese (ja)
Inventor
Mitsuru Iwai
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP2171579A priority Critical patent/JPS55114036A/en
Publication of JPS55114036A publication Critical patent/JPS55114036A/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
    • H03K17/28—Modifications for introducing a time delay before switching
    • H03K17/292—Modifications for introducing a time delay before switching in thyristor, unijunction transistor or programmable unijunction transistor switches

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To set a long period of time easily at low cost by prolonging delay time by combining a semiconductor constant current circuit with a discharge circuit of a charging-discharging capacitor. CONSTITUTION:With switch 1 pushed, charge rectified by diode 2 is accumulated in capacitor 3 and at the same time, a voltage across capacitor 3 is increased to turn ON SCR5 via constant current circui 4. At this time, the constant current circuit is set to a current value enough to turn ON SCR, so that the charge accumulated in capacitor 3 will be consumed to turn ON SCR without waste. Further, since this current value is nearly constant without reference the amount of the residual charge of the capacitor, the conduction of SCR can be maintained for a long time.
JP2171579A 1979-02-26 1979-02-26 Power-saving time switch Pending JPS55114036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2171579A JPS55114036A (en) 1979-02-26 1979-02-26 Power-saving time switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2171579A JPS55114036A (en) 1979-02-26 1979-02-26 Power-saving time switch

Publications (1)

Publication Number Publication Date
JPS55114036A true JPS55114036A (en) 1980-09-03

Family

ID=12062756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2171579A Pending JPS55114036A (en) 1979-02-26 1979-02-26 Power-saving time switch

Country Status (1)

Country Link
JP (1) JPS55114036A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6459681A (en) * 1987-08-31 1989-03-07 Hitachi Ltd Digital/audio reproducing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6459681A (en) * 1987-08-31 1989-03-07 Hitachi Ltd Digital/audio reproducing device

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