stepper motor drive circuit design

... performance of the motor. To reduce the effects of inductance, most types of driver circuits are designed to supply a voltage greater than the motor s rated voltage. TYPES OF STEP MOTOR DRIVERS For ... www.stepcontrol.com 1 Stepper Motor System Basics (Rev. 2/2010) Table of Contents 1. STEPPER MOTOR SYSTEMS OVERVIEW 2 2. STEPPING MOTORS 3 TYPES OF STEPPER MOTORS 3 VARIABLE RELUCTANCE ... including; Stepper Motor, Linear Step Motor, DC Brush, Brushless, Servo, Brushless Servo and more. This document will concentrate on Step Motor technology. In Theory, a Stepper motor is a...

Ngày tải lên: 25/10/2012, 15:38

... amplifier design and includes Load Pull measurement and design techniques and a more analytic design example of a broadband, efficient amplifier operating from 130 to 180 MHz. The design example ... RF Circuit Design with Low Noise Oscillators. Jeremy Everard Copyright © 2001 John Wiley & Sons Ltd ISBNs: 0-471-49793-2 (Hardback); 0-470-84175-3 (Electronic) 14 Fundamentals of RF Circuit ... pF2.0 ' ≈ cb C pF76.02.096.0 ' =−= eb C (1.82) () pF26.176.02.052.111 '' =++=+         += ebcb e L T CC r R C (1.83) 22 Fundamentals of RF Circuit Design then: [] () f E dB 3 350 10 50 2 23 3 12 10 50 350 = ++ −+ π . = 133MHz (1.71) The low...

Ngày tải lên: 08/04/2013, 10:50

... E 2 max Allen and Holberg - CMOS Analog Circuit Design Page II.0-3 OBJECTIVE ã Provide an understanding of CMOS technology sufficient to enhance circuit design. ã Characterize passive components ... Holberg - CMOS Analog Circuit Design II.5-6 IMPROVED LAYOUT METHODS FOR CAPACITORS Corner clipping: Clip corners Street-effect compensation: Allen and Holberg - CMOS Analog Circuit Design Page II.1-6 Etching Etching ... Allen and Holberg - CMOS Analog Circuit Design Page I.2-1 I.1 - INTRODUCTION GLOBAL OBJECTIVES ã Teach the analysis, modeling, simulation, and design of analog circuits implemented in CMOS technology. ã...

Ngày tải lên: 18/10/2013, 12:15

Ngày tải lên: 25/11/2013, 11:38

... components. If this equivalent circuit model is speed-independent, then the circuit is delay-insensitive. Unfortunately the class of delay-insensitive circuits is rather small. Only circuits composed of ... xvi PRINCIPLES OF ASYNCHRONOUS CIRCUIT DESIGN The following list describes the objectives of the 20 projects. It is sorted by decreasing funding budget. CRAFT CMOS Radio Frequency Circuit Design for Wireless ... DQIF, through physical design and characterisation of the core blocks Low-power RF design techniques in standard CMOS digital processes RF design tools and framework; PAPRICA Design Kit Demonstration...

Ngày tải lên: 09/12/2013, 21:15

... 159 8.1 Introduction 159 8.2 Design Style #1 160 8.3 Design Style #2 (Stored Output) 168 viii Contents TLFeBOOK circuit, and of an ARCHITECTURE, which describes how the circuit should func- tion. ... expected. 1.5 Design Examples As mentioned in the preface, the book is indeed a design- oriented approach to the task of teaching VHDL. The integration between VHDL and Digital Design is achieved ... 1 TLFeBOOK I CIRCUIT DESIGN TLFeBOOK ter, while sequential code is treated in another; data types are discussed in one chap- ter, while operators and attributes are in another; what is at the circuit...

Ngày tải lên: 12/12/2013, 11:16

... (1960–1971). He is specialized in power electronics and motor drives, specifically including power converters, ac drives, microcomputer/DSP control, EV/HV drives, and artificial intelligence applications ... induction motor drive, ” IEEE Trans. Ind. Applicat., vol. 36, pp. 1628–1636, Nov./Dec. 2000. [3] J. O. P. Pinto, B. K. Bose, and L. E. B. da Silva, “A stator flux oriented vector-controlledinduction motor ... Electronics and AC Drives (Upper Saddle River, NJ: Prentice-Hall, 2002), Power Electronics and AC Drives (Englewood Cliffs, NJ: Prentice-Hall, 1986), Power Electronics and Variable Frequency Drives (New...

Ngày tải lên: 22/12/2013, 08:16

Ngày tải lên: 01/01/2014, 20:29

Ngày tải lên: 09/01/2014, 02:00

Ngày tải lên: 09/01/2014, 02:12

... simple circuits to minimize circuit area, but also low power dissipation to maximize battery life. 1.2 Lower Frequency Analog Design and Microwave Design Versus Radio Frequency Integrated Circuit Design RFIC ... advantages in that circuits can drive or be driven by an impedance that best suits them. On the other hand, if circuits are connected using transmission lines, then these circuits are usually designed ... Frequency Integrated Circuit Design

Ngày tải lên: 09/01/2014, 02:17

... and circuits can even be produced by our foundry partners. All of the trim circuitry tend to scale with the process features so that as the process and the amplifi er circuit shrink, the trim circuit ... saturation is generally slow, except for certain “ clamped ” op amps specifi cally designed for fast overdrive recovery. Overdriven amplifi ers may therefore be unexpectedly slow. Because of this reduction ... This is commonly referred to as “ infi nite ” short circuit protection, since the amplifi er can drive that value of current into the short circuit indefi nitely. The output current that can be...

Ngày tải lên: 09/01/2014, 16:59

... +ììì 44 4 24 4 1 3 3 p (2.29) 28 RF MEMS Circuit Design for Wireless Communications 2 Elements of RF Circuit Design 2.1 Introduction The design of RF MEMS circuits for wireless applications is ... cm                497. (2.42) 30 RF MEMS Circuit Design for Wireless Communications Wireless SystemsA Circuits Perspective 11 T/R SW BPF RX MXR LNA SAW BPF Driver amp Power amp Demod FREF RC RSSI PLL Loop filter Modulation Figure ... thin-film microstrip lines and equivalent distributed circuit model. RF MEMS Circuit Design for Wireless Communications Wireless SystemsA Circuits Perspective 13  Transceiver and Baseband Phase...

Ngày tải lên: 19/01/2014, 20:20

... throughout. 5/11 L297 APPLICATION INFORMATION TWO PHASE BIPOLAR STEPPER MOTOR CONTROL CIRCUIT This circuit drives bipolar stepper motors with winding currents up to 2A. The diodes are fast 2A types. Figure ... L297 Stepper Motor Controller IC generates four phase drive signals for two phase bipolar and four phase unipolar step motors in microcomputer- controlled applications. The motor can be driven ... Motor phase B drive signal for power stage. 7 C Motor phase C drive signal for power stage. 8 INH2 Active low inhibit control for drive stages of C and D phases. Same functions as INH1. 9 D Motor...

Ngày tải lên: 20/01/2014, 02:20

... connected to the most negativc voltage in a microcircuit. Ln analog circuits, this might be the negative power supply. but in digital circuits it is normally ground or 0 V. This connection ... Integrated -Circuit Devices and Modelling In this chapter, the operation and modelling of semiconductor devices are described. Although it is possible to do simple integrated -circuit design with ... VOLTAGE REFERENCES, AND TRANSLINEAR CIRCUITS Performance of Sample-and-Hold Circuits 334 MOS Sample-and-Hold Basics 336 Examples of CMOS S/H Circuits 343 Bipolar and BiCMOS Sample...

Ngày tải lên: 26/01/2014, 01:20

... gate-source voltage. In most circuit applications, noncutoff MOS- FET transistors are operated in strong inversion, with Veff > 100 mV (many prudent circuit designers use a minimum ... early electronic years, the majority of microcircuits were realized using bipolar- junction transistors (BJTs). However, in the late 1970s, microcircuits that used MOS 1.3 Advanced MOS Modelling ... MOS MODEWNG In this section, we look at three advanced modelling concepts that a microcircuit designer is likely to encounter-short-channel effects, subthreshold operation, and leakage...

Ngày tải lên: 26/01/2014, 01:20

Ngày tải lên: 23/02/2014, 02:20

Ngày tải lên: 23/02/2014, 22:20

Ngày tải lên: 07/03/2014, 08:20

Ngày tải lên: 07/03/2014, 14:20