JPS56115022A - Blocking oscillating circuit - Google Patents

Blocking oscillating circuit

Info

Publication number
JPS56115022A
JPS56115022A JP1820980A JP1820980A JPS56115022A JP S56115022 A JPS56115022 A JP S56115022A JP 1820980 A JP1820980 A JP 1820980A JP 1820980 A JP1820980 A JP 1820980A JP S56115022 A JPS56115022 A JP S56115022A
Authority
JP
Japan
Prior art keywords
capacitor
resistances
resistance
charged
turned
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
JP1820980A
Other languages
Japanese (ja)
Other versions
JPH0356016B2 (en
Inventor
Hiromi Kakumoto
Kaoru Furukawa
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.)
Panasonic Electric Works Co Ltd
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 JP1820980A priority Critical patent/JPS56115022A/en
Publication of JPS56115022A publication Critical patent/JPS56115022A/en
Publication of JPH0356016B2 publication Critical patent/JPH0356016B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/30—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using a transformer for feedback, e.g. blocking oscillator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To set a large value to the resistance that flows the electromotive current, by connecting a serial circuit consisting of a resistance and a diode backward to the polarity of a power source in parallel to the speed-up capacitor of a switch starting circuit part. CONSTITUTION:When the rectification output of the rectifying circuit 1 is applied to the blocking oscillator A, the speed-up capacitor C1 at the switch starting circuit part 4 is charged via the resistances R1 and R2. Then the switching transistor TR is turned on when the said charging voltage reaches a prescribed level. The negative pulse is applied forcibly to the base of the TR after a certain on time to turn off the TR. During this off time, the capacitor C1 is charged in the direction where the TR is adversely biased, and this charging electric charge is discharged via the diode D1 and the resistance R3. Furthermore the capacitor is charged again via the resistances R1 and R2, and as result the TR is turned on to give an oscillation to the oscillator A. Thus the resistances R1 and R2 which charge the capacitor C1 can be isolated from the discharging resistance R3. As a result, a large value can be set to the resistances R1 and R2.
JP1820980A 1980-02-15 1980-02-15 Blocking oscillating circuit Granted JPS56115022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1820980A JPS56115022A (en) 1980-02-15 1980-02-15 Blocking oscillating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1820980A JPS56115022A (en) 1980-02-15 1980-02-15 Blocking oscillating circuit

Publications (2)

Publication Number Publication Date
JPS56115022A true JPS56115022A (en) 1981-09-10
JPH0356016B2 JPH0356016B2 (en) 1991-08-27

Family

ID=11965254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1820980A Granted JPS56115022A (en) 1980-02-15 1980-02-15 Blocking oscillating circuit

Country Status (1)

Country Link
JP (1) JPS56115022A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0581469U (en) * 1991-12-11 1993-11-05 大野金属株式会社 Cylinder lock

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5128922U (en) * 1974-08-26 1976-03-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5128922U (en) * 1974-08-26 1976-03-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0581469U (en) * 1991-12-11 1993-11-05 大野金属株式会社 Cylinder lock

Also Published As

Publication number Publication date
JPH0356016B2 (en) 1991-08-27

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