JPS5541022A - Photo oscillation circuit - Google Patents

Photo oscillation circuit

Info

Publication number
JPS5541022A
JPS5541022A JP11387378A JP11387378A JPS5541022A JP S5541022 A JPS5541022 A JP S5541022A JP 11387378 A JP11387378 A JP 11387378A JP 11387378 A JP11387378 A JP 11387378A JP S5541022 A JPS5541022 A JP S5541022A
Authority
JP
Japan
Prior art keywords
oscillation
capacitor
photo
voltage
emitter
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
JP11387378A
Other languages
Japanese (ja)
Other versions
JPS5816809B2 (en
Inventor
Yukio Iitaka
Toshiro Abe
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP11387378A priority Critical patent/JPS5816809B2/ja
Publication of JPS5541022A publication Critical patent/JPS5541022A/en
Publication of JPS5816809B2 publication Critical patent/JPS5816809B2/ja
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K3/00Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/42Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled

Abstract

PURPOSE:To avoid the stop of oscillation even with increased intensity of radiated light, by connecting the parallel circuit of resistor and capacitor between the emitter of photo oscillation element and the negative electrode of power supply and connecting a Zener diode between the base of the negative electrode of power supply. CONSTITUTION:When strong light is incident to the photo oscillation element 1 and the voltage drop consisting of the circuit current of he element 1 and the resistor 3 is greater than the Zener voltage of the Zener diode 4, back voltage is applied between the emitter E and the base B of the element 1 to interrupt the current flowing to the element 1 and to make it into OFF state. When the element 1 transits from ON to OFF state, back bias is made between the collector C and the gate G. The collector C and the gate G keep back bias due to the junction capacitance between C and G. When the discharge of the capacitor 5 progresses and the charge stored in the junction capacitor between C and G is finished for discharge, the element 1 is again ON, this is repeated, and oscillation is kept as shown in Figure.
JP11387378A 1978-09-15 1978-09-15 Expired JPS5816809B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11387378A JPS5816809B2 (en) 1978-09-15 1978-09-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11387378A JPS5816809B2 (en) 1978-09-15 1978-09-15

Publications (2)

Publication Number Publication Date
JPS5541022A true JPS5541022A (en) 1980-03-22
JPS5816809B2 JPS5816809B2 (en) 1983-04-02

Family

ID=14623244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11387378A Expired JPS5816809B2 (en) 1978-09-15 1978-09-15

Country Status (1)

Country Link
JP (1) JPS5816809B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565450A (en) * 1978-11-10 1980-05-16 Hitachi Ltd Resin-mold type semiconductor device
JPS57175448U (en) * 1981-04-30 1982-11-05
JPS60161647A (en) * 1984-02-02 1985-08-23 Toshiba Corp Lead frame for semiconductor device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6311548Y2 (en) * 1983-08-16 1988-04-04

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565450A (en) * 1978-11-10 1980-05-16 Hitachi Ltd Resin-mold type semiconductor device
JPS57175448U (en) * 1981-04-30 1982-11-05
JPS6225905Y2 (en) * 1981-04-30 1987-07-02
JPS60161647A (en) * 1984-02-02 1985-08-23 Toshiba Corp Lead frame for semiconductor device

Also Published As

Publication number Publication date
JPS5816809B2 (en) 1983-04-02

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