JPS5567209A - Power amplifier for optical current transformer - Google Patents

Power amplifier for optical current transformer

Info

Publication number
JPS5567209A
JPS5567209A JP14079778A JP14079778A JPS5567209A JP S5567209 A JPS5567209 A JP S5567209A JP 14079778 A JP14079778 A JP 14079778A JP 14079778 A JP14079778 A JP 14079778A JP S5567209 A JPS5567209 A JP S5567209A
Authority
JP
Japan
Prior art keywords
power source
control
pulse width
current transformer
optical 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
JP14079778A
Other languages
Japanese (ja)
Inventor
Tomio Fukushima
Yoshisuke Takita
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.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing 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 Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP14079778A priority Critical patent/JPS5567209A/en
Publication of JPS5567209A publication Critical patent/JPS5567209A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers

Abstract

PURPOSE:To make a power amplifier for optical current transformer efficient by reducing the loss of the power amplification part and the load of the power source part by controlling the pulse width of the power amplification part. CONSTITUTION:Power source part 1 consists of battery power source 1a and capacitor 1b connected in parallel to this power source 1a, and applies output voltage E of DC power source 1a to power amplification part 2. Current detection signal eS which has the light detected by an optical current transformer is supplied to input terminal 3, and this control input signal eS is supplied to control part 4. Control part 4 generates a pulse width control signal on a basis of control input signal eS and a prescribed reference rectangular wave signal to control the pulse width of power amplification part 2. The pulse width-controlled output has higher harmonic components removed by an AC filter part and is boosted by boosting transformer 6. The capacity of boosting transformer 6 is determined by the optical current transformer, the overcurrent constant and the battery power source voltage.
JP14079778A 1978-11-15 1978-11-15 Power amplifier for optical current transformer Pending JPS5567209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14079778A JPS5567209A (en) 1978-11-15 1978-11-15 Power amplifier for optical current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14079778A JPS5567209A (en) 1978-11-15 1978-11-15 Power amplifier for optical current transformer

Publications (1)

Publication Number Publication Date
JPS5567209A true JPS5567209A (en) 1980-05-21

Family

ID=15276956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14079778A Pending JPS5567209A (en) 1978-11-15 1978-11-15 Power amplifier for optical current transformer

Country Status (1)

Country Link
JP (1) JPS5567209A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6480112A (en) * 1987-09-22 1989-03-27 Japan Broadcasting Corp Matching circuit
JP2006042296A (en) * 2003-11-26 2006-02-09 Yamaha Corp Class-d amplifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6480112A (en) * 1987-09-22 1989-03-27 Japan Broadcasting Corp Matching circuit
JP2006042296A (en) * 2003-11-26 2006-02-09 Yamaha Corp Class-d amplifier

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