scholarly journals A Time-Delay Suppression Technique for Digital PWM Control Circuit

10.5772/8499 ◽  
2010 ◽  
Author(s):  
Yoichi Ishizuka
Keyword(s):  
Time Delay ◽  
Control Circuit ◽  
Pwm Control ◽  
Suppression Technique

scholarly journals A time-delay suppression technique for DPWM control circuit

2009 ◽  
Author(s):  
Yoichi Ishizuka ◽  
Fumitoshi Hirose ◽  
Yusuke Yamada ◽  
Hirofumi Matsuo
Keyword(s):  
Time Delay ◽  
Control Circuit ◽  
Suppression Technique

A Pilot Self-Sustaining Time Delay Safe Switch

2014 ◽  
Vol 697 ◽  
pp. 147-150
Author(s):  
Hai Jun Wang ◽  
Yong Jian Fan
Keyword(s):  
Time Delay ◽  
Control Circuit ◽  
Dynamic State ◽  
Work Processes ◽  
Current Time ◽  
Control Power ◽  
Logic Control ◽  
Switch Time ◽  
Delay Control ◽  
Control Relay

We designed a type of pilot-operated self-sustaining time delay power on/off circuit which consists of a duplex switch, time delay circuit and a dual-coil, dual-contact electromagnetic logic control relay. We also depicted a dual-coil, dual-contact electromagnetic relay logic control circuit diagram dedicated to this design. Structures and specific couplings of the circuit were presented and analyzed. Functional analysis was also carried out for a variety of work processes performed on the circuit at static or dynamic state, and the results showed that the circuit, in addition to fulfilling its primary function for time delay shutdown of the main circuit, is also capable of automatically powering-off the control circuit and the control power supply when the device is left unattended. This design greatly meets the needs of current time delay control technology, and thus has a great commercial potential.

PWM Chopper of Ultrasonic Power Supply Based on FPGA

2012 ◽  
Vol 476-478 ◽  
pp. 1305-1308
Author(s):  
Chun Feng Sun ◽  
Wei Guang Zhang
Keyword(s):  
Power Supply ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Output Pulse ◽  
Open Loop ◽  
Control Circuit ◽  
Ultrasonic Power ◽  
Pwm Control ◽  
Power Regulation ◽  
Regulation Method

Pulse width modulation (PWM) is often one of the important power regulation method of ultrasonic power supply. The traditional PWM control circuit has the shortcomings of complex design structure, slow dynamic response and low reliability. An advanced PWM technique for choppers of ultrasonic power supply based on FPGA is proposed. Through open-loop operation, it regulates the output pulse width of ultrasonic power supply dynamically. The simulation result shows that the PWM control circuit based on FPGA can realize to adjust the width of PWM signal and power regulation conveniently.

Partially resonant active filter using the digital PWM control circuit with the DSP

2002 ◽  
Author(s):  
H. Matsuo ◽  
F. Kurokawa ◽  
Z. Luo ◽  
Y. Makino ◽  
Y. Ishizuka ◽  
...  
Keyword(s):  
Active Filter ◽  
Control Circuit ◽  
Pwm Control

scholarly journals A design for small time-delay control circuit for DPWM- POL

2010 ◽  
Author(s):  
Yoichi Ishizuka ◽  
Yusuke Yamada ◽  
Fumitoshi Hirose ◽  
Mariko Nishi ◽  
Hirofumi Matsuo
Keyword(s):  
Time Delay ◽  
Small Time ◽  
Control Circuit ◽  
Time Delay Control ◽  
Small Time Delay ◽  
Delay Control

Temperature and Humidity Controller Based on P89LPC920FDH

2014 ◽  
Vol 539 ◽  
pp. 577-580
Author(s):  
Dong He Xi ◽  
Juan Du
Keyword(s):  
Time Delay ◽  
Control Circuit ◽  
Circuit Board ◽  
Trigger Pulse ◽  
Zero Crossing ◽  
The Core ◽  
Temperature And Humidity ◽  
Current Zero ◽  
Crossing Point ◽  
Ac Conduction

This paper describes the design of a temperature and humidity controller, the controller takes P89LPC920FDH SCM as the core. P89LPC920FDH micro-controller integrated with internal comparator, watchdog timer, and reset circuit modules. The main control circuit board uses comparator to detect alternating current zero crossing point, uses the timer after a time delay to thyristor trigger pulse to control the hair AC conduction angle, thereby heating power control circuit to control the temperature and humidity of the environment, the purpose of.

scholarly journals The Pressure-Speed Control of 555 Timer Circuit for Flow-Controlled Booster Motor by Solar Cell

2021 ◽  
Vol 8 (4) ◽  
pp. 119-125
Author(s):  
Wen-Bin Lin ◽  
Kao-Feng Yarn
Keyword(s):  
Solar Cell ◽  
High Speed ◽  
Water Pressure ◽  
Control Circuit ◽  
Pwm Control ◽  
Environment Friendly ◽  
Switch Control ◽  
Circuit Components ◽  
Permanent Magnet Dc Motor ◽  
Pressure Switch

This paper presents the application of 555 timer circuit. For general PWM control circuit components manner and cost reduction improvements, and apply this system of automatic flow-controlled motor. We use pressure switch to control the rpm of automatic flow-controlled motor. And then, it can enhance the water pressure due to a water tower lack. The system can reach the target of energy –saving and environment friendly by using solar energy. Finally, the consumer can adjust the water flow volume by choosing low speed, middle speed, and high speed of permanent magnet DC motor revolution due to pressure switch control. Keywords: Solar cell, 555 timer circuit, PWM control circuit, Flow-controlled booster motor, Pressure switch.

scholarly journals Study on Reduction Effect of Harmonics in Compound PWM Control Applied to Single-Phase AC Power Control Circuit

2002 ◽  
Vol 122 (12) ◽  
pp. 1097-1102 ◽  
Author(s):  
Kazutaka Itako ◽  
Takeaki Mori
Keyword(s):  
Power Control ◽  
Single Phase ◽  
Control Circuit ◽  
Pwm Control ◽  
Ac Power ◽  
Reduction Effect

Delay-time suppression technique for DC/DC buck converter using voltage mode PWM control

2017 ◽  
Author(s):  
Manimel Wadu Sahan Dulara ◽  
Nobukazu Tsukiji ◽  
Kobori Yasunori ◽  
Koyo Asaishi ◽  
Nobukazu Takai ◽  
...  
Keyword(s):  
Delay Time ◽  
Buck Converter ◽  
Pwm Control ◽  
Voltage Mode ◽  
Suppression Technique
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