JPS5585138A - Timer circuit - Google Patents

Timer circuit

Info

Publication number
JPS5585138A
JPS5585138A JP15796278A JP15796278A JPS5585138A JP S5585138 A JPS5585138 A JP S5585138A JP 15796278 A JP15796278 A JP 15796278A JP 15796278 A JP15796278 A JP 15796278A JP S5585138 A JPS5585138 A JP S5585138A
Authority
JP
Japan
Prior art keywords
voltage
capacitor
output
timer
reference voltage
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.)
Granted
Application number
JP15796278A
Other languages
Japanese (ja)
Other versions
JPS5925493B2 (en
Inventor
Hideharu Tezuka
Koichi Taniguchi
Shinichi Hori
Shuichi Kosuge
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
Denso Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
NipponDenso 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, NipponDenso Co Ltd filed Critical Toshiba Corp
Priority to JP53157962A priority Critical patent/JPS5925493B2/en
Publication of JPS5585138A publication Critical patent/JPS5585138A/en
Publication of JPS5925493B2 publication Critical patent/JPS5925493B2/en
Expired 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
    • H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To make small the external appearance and shape and to enable manufacture of low cost, by using the capacitor of low dielectric strength, in the timer circuit producing the timer signal with the comparison between the reference voltage and the charge up voltage of capacitor. CONSTITUTION:When the switch 2 is closed, the voltage +V is fed to the charging circuit 1 to discharge the charge stored in the capacitor 3 in advance, and the terminal voltage VC of the capacitor 3 is 0 and the voltage comparator 4 is at high level signal. When the switch 2 is opened, the capacitor 3 is sequentially charged with the output current of the charging circuit, and when the voltage is in agreement with the reference voltage VREF, the output of the voltage comparator 4 is inverted to low level signal to output the timer signal. After that, when the terminal voltage VC of the capacitor 3 reaches the sum VE with the reference voltage VREF and the voltage between the base and emitter of the PNP transistor 5 VBE, the transistor 5 is conductive and the terminal voltage of capacitor does not reach VE or more.
JP53157962A 1978-12-21 1978-12-21 timer circuit Expired JPS5925493B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53157962A JPS5925493B2 (en) 1978-12-21 1978-12-21 timer circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53157962A JPS5925493B2 (en) 1978-12-21 1978-12-21 timer circuit

Publications (2)

Publication Number Publication Date
JPS5585138A true JPS5585138A (en) 1980-06-26
JPS5925493B2 JPS5925493B2 (en) 1984-06-18

Family

ID=15661248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53157962A Expired JPS5925493B2 (en) 1978-12-21 1978-12-21 timer circuit

Country Status (1)

Country Link
JP (1) JPS5925493B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100825336B1 (en) 2004-12-10 2008-04-28 미쓰비시덴키 가부시키가이샤 Semiconductor circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5339047A (en) * 1976-09-20 1978-04-10 Siemens Ag Directional pulse oscillator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5339047A (en) * 1976-09-20 1978-04-10 Siemens Ag Directional pulse oscillator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100825336B1 (en) 2004-12-10 2008-04-28 미쓰비시덴키 가부시키가이샤 Semiconductor circuit

Also Published As

Publication number Publication date
JPS5925493B2 (en) 1984-06-18

Similar Documents

Publication Publication Date Title
JPS56126315A (en) Oscillator
JPS5585138A (en) Timer circuit
JPS568913A (en) Signal clamping circuit
JPS5482148A (en) Muting control circuit
JPS567522A (en) Delay circuit
JPS5797721A (en) Oscillator
JPS5642410A (en) Emitter follower circuit
JPS55129992A (en) Semiconductor memory
JPS6471320A (en) Delay circuit
JPS5583338A (en) Control circuit of semiconductor element
JPS57121316A (en) Sweep voltage generating circuit
JPS5481023A (en) High voltage generation circuit
JPS5784619A (en) Pulse width extension circuit
JPS5539456A (en) Pulse generation circuit
JPS57173226A (en) Timer circuit
JPS56129422A (en) Oscillation circuit
JPS5567508A (en) Ozonizer
JPS5698938A (en) Signal switching circuit
Bark Negative Resistance cCaracteristic in Gate Circuit of SCR
JPS567523A (en) Off delay timer
JPS57103472A (en) Spot killer device
JPS5554670A (en) Non-contact type ignition device
JPS5453952A (en) Delay pulse generating circuit
JPS5539457A (en) Pulse generation circuit
JPS5780264A (en) Double voltage generating circuit