JPS55159624A - Pulse width modulator - Google Patents

Pulse width modulator

Info

Publication number
JPS55159624A
JPS55159624A JP6613979A JP6613979A JPS55159624A JP S55159624 A JPS55159624 A JP S55159624A JP 6613979 A JP6613979 A JP 6613979A JP 6613979 A JP6613979 A JP 6613979A JP S55159624 A JPS55159624 A JP S55159624A
Authority
JP
Japan
Prior art keywords
signal
terminal
voltage vth
voltage
pulse width
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
JP6613979A
Other languages
Japanese (ja)
Inventor
Akio Tokuge
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP6613979A priority Critical patent/JPS55159624A/en
Publication of JPS55159624A publication Critical patent/JPS55159624A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation

Landscapes

  • Amplifiers (AREA)

Abstract

PURPOSE:To achieve very simple constitution, by constituting nonstable multivibrator with gate IC and changing the oscillation period with the signal level through the application of audio signal to the input. CONSTITUTION:First, if an audio signal S2 is not fed to an input terminal 28, NAND circuits 21-23 as the gate IC repeat the inversion, at the time when the voltage Va at the contact (a) reaches the threshold voltage VTH of the NAND circuit 21 with charge and discharge of a capacitor 25 via a resistor 24. Thus, at the point (b), a rectangular wave having duty ratio 50% is obtained. When a signal S2 is fed to a terminal 28, depending that the terminal 28 is at positive or negative direction than the voltage VTH, the time when the voltage Va at the connection (a) reaches the voltage VTH is longer or shorter. Accordingly, the duty ratio of the output at the point (b) is changed with the level change of positive and negative direction of the signal S2 for pulse width modulation.
JP6613979A 1979-05-30 1979-05-30 Pulse width modulator Pending JPS55159624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6613979A JPS55159624A (en) 1979-05-30 1979-05-30 Pulse width modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6613979A JPS55159624A (en) 1979-05-30 1979-05-30 Pulse width modulator

Publications (1)

Publication Number Publication Date
JPS55159624A true JPS55159624A (en) 1980-12-11

Family

ID=13307223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6613979A Pending JPS55159624A (en) 1979-05-30 1979-05-30 Pulse width modulator

Country Status (1)

Country Link
JP (1) JPS55159624A (en)

Similar Documents

Publication Publication Date Title
US3714470A (en) Variable duty cycle signal generator
JPS56126315A (en) Oscillator
KR840000112A (en) Pulse width modulated signal amplifier
JPS5453240A (en) Reverse voltage generating circuit
GB1078320A (en) Converter
GB1330679A (en) Tri-level voltage generator circuit
JPS55159624A (en) Pulse width modulator
JPS5795726A (en) Voltage level shift circuit
JPS5483759A (en) Mos inverter circuit
JPS5570128A (en) Oscillator circuit
GB1047710A (en) Improvements in variable-frequency oscillators
JPS5673921A (en) Chattering rejection circuit
GB1471563A (en) Output retaining electronic circuit
JPS573421A (en) Pulse width control circuit
JPS57111121A (en) Pulse width modulating method and its circuit by negative feedback circuit configuration
JPS5720021A (en) Complementary mos transistor oscillating circuit
JPS5623022A (en) Schmitt trigger circuit
JPS57109406A (en) Oscillating circuit
JPS5693421A (en) Oscillating circuit
JPS5544272A (en) Voltage-pulse width conversion circuit
JPS55100735A (en) Oscillation circuit
GB1122355A (en) Improvements in and relating to sawtooth generators
JPS56160134A (en) Pulse generating circuit
JPS56133676A (en) Time-difference and voltage converting circuit
JPS56165986A (en) Voltage hold circuit