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Analogue Electronic Articles


1: X9241-based Digital Potentiometers controllable gain amplifier
1 Introduction X9241 is a four E2POT Digital Potentiometers Integrated in a single CMOS integrated circuit on a digital potentiometer, and its function block diagram as shown in Figure 1, which contains four resistor arrays, each array contains 63 ...

2: Current-mode multi-functional MDDCC the realization of second-order filter
1 Introduction Since the current conveyor (Current Conveyor, CC) Since the use of current conveyors to achieve multi-functional active filter functions and the advantages of widespread concern. Based on second-generation current conveyor (The Seeon...

3: MOSFET bimodal effect on the quantitative assessment of the research
Metal-oxide semiconductor field-effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) is a semi-metal-oxide (MOS) II to work closely with the body and the two adjacent P-n junction (p-n junction) by the composition. Since the...

4: Under ultra-low-IF CMOS Mixer Design
With the rapid development of wireless communication, wireless communication of the proposed transceiver is getting higher and higher requirements. Low-IF receiver architecture as a result of integrated high image rejection capability and many other...

5: Adaptive weak vibration signal acquisition system design
0 Introduction Vibration in the mechanical structure, many weak signal contains the characteristics of mechanical movement of the rich information, such as fault feature information, it is necessary to be extracted for analysis. While in weak signa...

6: DDS-based automatic tracking frequency ultrasonic generator
1 Introduction Ultrasonic Cleaning the main role in the use of ultrasonic cavitation. Role in the sound field, there is liquid in the bubble will have high-frequency micro-vibration, when the sound pressure reaches a certain value, the rapid growth...

7: CMOS technology based on phase-locked loop chip charge pump design
1 Introduction Phase-locked loop (PLL) is an input signal to track the phase of the closed-loop automatic control system, the theoretical basis for the automatic control theory. With the carrier tracking phase-locked loop characteristics can be ext...

8: A LAN interface of the DDS with a sine function generator design
DDS (Direct Digital Synthesizer, Direct Digital Synthesis Technology) has been rapid development in recent years, expanding its application areas, in the electronic power technology has been widely used. DDS is the high-precision, rapid transformati...

9: A quadratic curvature compensation bandgap reference
1 Introduction Bandgap reference circuits are widely used in various types. In modern integrated circuits are increasingly being developed today, bandgap reference play an extremely important role. In the A / D, D / A converters and a number of ana...

10: CPLD based on the VGA video display system
Introduction Display systems in industrial, agriculture and daily life plays an increasingly important role and therefore, its design and research of great significance. CPLD (Complex Programmable Logic Device; complex programmable logic device) h...

11: ATmega128 with GSM-based alarm system for the family of Design and Implementation
Introduction With the development of electronic technology, anti-theft alarm system simplified from the original, localized to the intelligent, integrated development. Currently on the market anti-theft alarm system common means of communication ha...

12: Impulse noise of the adaptive digital modulation signal demodulation
1 Introduction Adaptive signal processing technology in the communications area of a wide range of applications, such as adaptive equalization, adaptive beamforming, adaptive interference cancellation, adaptive system identification and adaptive li...

13: Adjustable gain of the filter design program
In the signal processing process, the input signal is usually a mixture of noise and weak signal interference and signal strength, noise and interference is the frequency change, in order to obtain high signal to noise ratio of the output signal req...

14: Marine satellite-based information on the application of spatio-temporal data model
1 Introduction At present, marine geographic information system data is based on the expression of the general static moment, reflecting the marine transient information, such as military, fisheries, environmental monitoring, meteorology, resources...

15: Based on Neural Network in Thermal Power Plant Production Process Fault Diagnosis Expert System
With the control theory of continuous improvement and development, and computer technology in the field of industrial control applications, the level of automation control systems, quality control have been significant improvements. In the pursuit o...

16: SDH-based transmission system OptiX 155/622H Group Network configuration
1 Introduction Synchronous digital transmission system (Synchronous Digital Hierarchy, SDH) is the United States Institute of Communication Technologies Bell proposed synchronous optical network (SONET). Advisory Committee on International Telephon...

17: Nios-based control of the display module GDM12864A
With the rapid development of microelectronic technology, a variety of chips continue to shrink in size at the same time, more and more powerful features. FPGA chips are only a few thousand from the original door, the development of the scale of the...

18: 120W high reliability electronic HID lamp ballasts
High Intensity Discharge (HID) lamps in their high luminous efficiency, long life, small size, light and strong control, with good color, light and high utilization has become the mainstream of modern lighting products. HID lights are from a special...

19: 120W high reliability electronic HID lamp ballasts
High Intensity Discharge (HID) lamps in their high luminous efficiency, long life, small size, light and strong control, with good color, light and high utilization has become the mainstream of modern lighting products. HID lights are from a special...

20: Laser warning system to detect the number of receiver front-end design
0 Introduction Laser technology after decades of development, and laser weapons from theory to practice. Large number of laser weapons has brought increasingly serious threat, laser warning equipment to the incoming laser is a laser detection and p...


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