JPS5778212A - Pulse oscillator - Google Patents

Pulse oscillator

Info

Publication number
JPS5778212A
JPS5778212A JP55155710A JP15571080A JPS5778212A JP S5778212 A JPS5778212 A JP S5778212A JP 55155710 A JP55155710 A JP 55155710A JP 15571080 A JP15571080 A JP 15571080A JP S5778212 A JPS5778212 A JP S5778212A
Authority
JP
Japan
Prior art keywords
voltage
duty ratio
flicker
put1
comparator
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
JP55155710A
Other languages
Japanese (ja)
Other versions
JPH0128536B2 (en
Inventor
Junji Matsumura
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 JP55155710A priority Critical patent/JPS5778212A/en
Publication of JPS5778212A publication Critical patent/JPS5778212A/en
Publication of JPH0128536B2 publication Critical patent/JPH0128536B2/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
    • H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
    • H03K3/352—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region the devices being thyristors

Abstract

PURPOSE:To vary a duty ratio and a flicker period independently of each other with a simple constitution, by comparing the charging voltage of the capacitor of a relaxation oscillating circuit with a reference voltage and by controlling a switch part by the comparison output. CONSTITUTION:A relaxation oscillating circuitIis operated by a voltage obtained by rectifying an AC power source E by diodes D1-D4. When a charging voltage VA of a capacitor C2 of the circuitIbecomes higher than a reference voltage Vd determined by resistances R5-R7 of a comparing part II, a comparator 2 is turned off to make a thyristor TH3 of a switch part III conductive. When the voltage VA reaches a gate voltage VG of a PUT1, the PUT1 becomes conductive, and charge of the C2 is discharged, and the comparator 2 is turned on to cut off the TH3. By repeating this operation, power is supplied intermittently to a relay RY of a relay part - to flicker a light emitting diode LED. The value of a resistance R8 is changed to change the flicker period with a constant duty ratio, and the value of the resistance R5 or R6 is changed to change the duty ratio with a constant flicker period.
JP55155710A 1980-10-31 1980-10-31 Pulse oscillator Granted JPS5778212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55155710A JPS5778212A (en) 1980-10-31 1980-10-31 Pulse oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55155710A JPS5778212A (en) 1980-10-31 1980-10-31 Pulse oscillator

Publications (2)

Publication Number Publication Date
JPS5778212A true JPS5778212A (en) 1982-05-15
JPH0128536B2 JPH0128536B2 (en) 1989-06-02

Family

ID=15611806

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55155710A Granted JPS5778212A (en) 1980-10-31 1980-10-31 Pulse oscillator

Country Status (1)

Country Link
JP (1) JPS5778212A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50116350U (en) * 1974-03-05 1975-09-22
JPS5421156A (en) * 1977-07-18 1979-02-17 Matsushita Electric Ind Co Ltd Oscillation control circuit
JPS5432250A (en) * 1977-08-17 1979-03-09 Toshiba Corp Pulse generator of wide range

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50116350U (en) * 1974-03-05 1975-09-22
JPS5421156A (en) * 1977-07-18 1979-02-17 Matsushita Electric Ind Co Ltd Oscillation control circuit
JPS5432250A (en) * 1977-08-17 1979-03-09 Toshiba Corp Pulse generator of wide range

Also Published As

Publication number Publication date
JPH0128536B2 (en) 1989-06-02

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