• 제목/요약/키워드: Pulse Generation Circuit

검색결과 65건 처리시간 0.031초

피에조일렉트릭 프린터 헤드 구동을 위한 집적화된 고전압 펄스 발생 회로의 설계 (Design of an Integrated High Voltage Pulse Generation circuit for Driving Piezoelectric Printer Heads)

  • 이경록;김종선
    • 조명전기설비학회논문지
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    • 제25권2호
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    • pp.80-86
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    • 2011
  • This paper presents an integrated variable amplitude high voltage pulse generation circuit with low power and small size for driving industrial piezoelectric printer heads. To solve the problems of large size and power overhead of conventional pulse generators that usually assembled with multiple high-cost discrete ICs on a PCB board, we have designed a new integrated circuit (IC) chip. Since all the functions are integrated on to a single-chip it can achieve low cost and control the high-voltage output pulse with variable amplitudes as well. It can also digitally control the rising and falling times of an output high voltage pulse by using programmable RC time control of the output buffer. The proposed circuit has been designed and simulatedd in a 180[nm] Bipolar-CMOS-DMOS (BCD) technology using HSPICE and Cadence Virtuoso Tools. The proposed single-chip pulse generation circuit is suitable for use in industrial printer heads requiring a variable high voltage driving capability.

Sinusoidal, Pulse, Triangular Oscillator Using Second Generation Current Conveyor

  • Choi, Jin-Ho
    • Journal of information and communication convergence engineering
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    • 제8권5호
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    • pp.566-569
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    • 2010
  • This paper describes the sinusoidal, pulse, triangular oscillator using second generation current conveyor. To obtain the sinusoidal waveform the circuit blocks are constructed by using all pass filter and integrator. The pulse and the triangular waveforms are obtained from the output of sinusoidal oscillator. The peak-to-peak voltages of sinusoidal and triangular waveforms can be easily controlled by the dc offset voltage. Also the output frequency of the oscillator can be controlled by varying passive elements. The designed circuit is verified by HSPICE simulation.

LCD/PDP TV 전원장치용 고전압 구동 IC (High Voltage Driver IC for LCD/PDP TV Power Supply)

  • 송기남;이용안;김형우;김기현;서길수;한석붕
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2009년도 하계학술대회 논문집
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    • pp.11-12
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    • 2009
  • In this paper, we propose a high voltage driver IC(HVIC) for LCD and PDP TV power supply. The proposed circuit is included novel a shoot-through protection and a pulse generation circuit for the high voltage driver IC. The proposed circuit has lower variation of dead time and pulse-width about a variation of a process and a supply voltage than a conventional circuit. Especially, the proposed circuit has more excellent pulse-width matching of set and reset signals than the conventional circuit. Also the proposed pulse generation circuit prevent from fault operations using a logic gate. Dead time and pulse-width of the proposed circuit are typical 250 ns, and its variation is maximum 170 ns(68 %) about a variation of a process and a supply voltage. The proposed circuit is designed using $1\;{\mu}m$ 650 V BCD process parameter, and a simulation is carried out using Spectre.

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펄스다중화 보조회로를 이용한 새로운 구조의 36-펄스 전압원 컨버터 (New Configuration of 36-pulse Voltage Source Converter Using Pulse-Interleaving Auxiliary Circuit)

  • 전영수;백승택;한병문
    • 대한전기학회논문지:전기기기및에너지변환시스템부문B
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    • 제54권5호
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    • pp.238-244
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    • 2005
  • This paper proposes a new configuration of 36-pulse voltage source converter which consists of two 6-pulse bridges and a pulse-interleaving auxiliary circuit. The system topology of proposed converter was derived to increase the pulse number of converter output voltage without increasing the number of 6-pulse bridges. The gate pulse generation was analyzed using the theoretical approach of multi-pulse switching converter, The operational feasibility of proposed system was verified by computer simulations with PSCAD/EMTDC software and experimental works with 2kVA hardware prototype. The proposed converter can be widely used for the uninterruptible power supply, the power quality compensator, and the distributed power generation, such as solar and fuel cell power system.

펄스다중화 보조브리지회로를 이용한 새로운 구조의 36-펄스 전압원 컨버터 (New Configuration of 36-pulse Voltage Source Converter Using Pulse-Interleaving Auxiliary Bridge Circuit)

  • 한병문;백승택;전영수
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 추계학술대회 논문집 전력기술부문
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    • pp.31-35
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    • 2004
  • This paper proposes a new configuration of 36-pulse voltage source converter which consists of two 6-pulse bridges and a pulse-interleaving auxiliary circuit. The system topology of proposed converter was derived to increase the pulse number of converter output voltage without increasing the number of 6-pulse bridges. The gate pulse generation was analyzed using the theoretical approach of multi-pulse switching converter. The operational feasibility of proposed system was verified by computer simulations with PSCAD/TMTDC software and experimental works with 3kVA hardware prototype. The proposed converter can be widely used for the uninterruptible power supply, the power quality compensator, and the distributed power generation, such as solar and fuel fell power system.

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저주파 플라이백 스위칭회로를 이용한 고성능 자기자극기 (A Magnetic Stimulator Adopting a Low-Frequency Fly-Back Switching Circuit)

  • 이정한;김형식;허문창;김정회
    • 대한의용생체공학회:의공학회지
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    • 제27권6호
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    • pp.343-350
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    • 2006
  • Medical magnetic stimulator generates strong magnetic field pulses. Clinical applications of the magnetic pulse are the stimulation of nervous system and the contraction of muscle. The unique source of the strong magnetic pulse is a capacitor-inductor resonator and this inductor generates a strong sinusoidal magnetic pulse by discharging the capacitor with high initial voltage. Continuous muscle contraction needs sequential generation of the magnetic pulses. However, to keep the magnitude of sequential pulses identical, an expensive high-voltage power supply have to support voltage drop of the capacitor between the pulses. A protection circuit between the supply and the resonator is necessary to protect the supply from reverse current caused by capacitor voltage reversal. In this paper, a new circuit structure of the magnetic stimulator adopting a low-frequency fly-back switching is proposed. The new circuit supports sequential pulse generation and allows the reverse current without damage. Performance of the new circuit is examined and a low-cost magnetic stimulator for urinary incontinence therapy is being developed using the presented method.

쌍트란지스터 회로에 의한 전류제어형 펄스변조 (Current Control Type Pulse Width Modulation by Using Pair Transistor Circuit)

  • 오현위
    • 대한전자공학회논문지
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    • 제8권4호
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    • pp.7-16
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    • 1971
  • 쌍트란지스터 회로에 의하면 전류제어형의 부성저항소자가 가능하다. 이와같은 부성소자를 사용한 구형파발진회로의 바이어스전류에 신호파를 중첩함으로써 펄스폭변조회로를 구성하였다. 신호파가 정인 경우에는 한쪽의 트란지스터의 바이어스전류만을 증가시키고, 또 신호파가 부인 경우에는 다른 한쪽의 바이러스만을 증가시키는 방법을 채택하였다. 따라서 신호회로로서 일종의 전파정류회로의 변형을 채용하였다. 발진주기의 이론적해석과 회로정수결정의 설계지침을 구명하고 실험회로를 제시하였다.

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계통연계형 대체에너지 발전시스템을 위한 새로운 고펄스 SCR 인버터 (A New High Pulse SCR Inverter for Utility Interactive Renewable Power Generation System)

  • 정재혁;김현정;최세완;김영석;원충연
    • 전력전자학회논문지
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    • 제7권1호
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    • pp.41-47
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    • 2002
  • 본 논문에서는 대체에너지 발전 시스템을 위한 새로운 자연전류형 SCR 인버터를 제안한다. 제안한 인버터 시스템은 6-펄스 SCR 인버터와 보조회로로 구성된다. 보조회로의 동작으로 인버터 시스템의 펄스 수가 증가하여 출력 전압 및 출력전류의 고조파가 현저히 저감된다. 제안한 방식의 24-펄스 동작을 위한 분석, 제어 및 시물레이션이 제시되고 실험을 통하여 제안한 이론을 입증한다.

계통연계형 대체에너지 발전시스템을 위한 고펄스 SCR 인버터 (High Pulse SCR Inverter for Utility Interactive Renewable Power Generation System)

  • 정재혁;김현정;최세완;김영석;원충연
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2001년도 전력전자학술대회 논문집
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    • pp.85-89
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    • 2001
  • In this paper, a new line-commutated SCR inverter for renewable power generation system is proposed. The proposed inverter system includes a 6-pulse SCR inverter and an auxiliary circuit. By the proper operation of the auxiliary circuit, the pulse number of the inverter system is increased and the output harmonic currents are reduced. Analysis, control and simulation for 24 pulse operation of the proposed scheme is presented and the experimental results will be provided in the final paper.

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난류가열 쎄타핀치의 고전압 펄스 발생에 관한 연구 (Study on the High Voltage Pulse Profile Characteristics of a Turbulently Heated Theta Pinch)

  • 강형보;정운관;육종철
    • 대한전기학회논문지
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    • 제33권11호
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    • pp.456-463
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    • 1984
  • The fast-rising high-voltage pulse generation circuit system of a theta pinch is both theoretically and experimentally investigated. The idealized model of this circuit system is a hybrid circuit system composed of three parts: a lumped circuit part being consisted of a capacitor bank and a spark switch connected in series, another lumped circuit part being consisted of the Blumlein transmission line, whose end load is the pinch coil. the voltage difference between two ends of the pinch coil is formulated by analyzing this hybrid circuit system by means of the law of the signal propagation in the transmission line and Kirchhoff's laws. The expedient numerical method for computer calculation is developed to generate the pulse profile of the voltage difference across the pinch coil. The period of the experimentally measured main pulse is a fourth of the theoretical one neglecting the resistance of the pinch coil. We attribute this discrepancy to the modelling in the theoretical calculation that hte resistance and inductance of the spark switch and capacitor bank are assumed to be constant through discharge. Therefore, we can see that the rise time of the imploding magnetic-field pulse is mainly dependent on the spark switch and capacitor bank.

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