ISDN-TA APPLICATIONS IMPLEMENT ALL KEY FEATURES OF THE BORSHT FUNCTION SINGLE SUPPLY (5.5 TO 15.8V) BUILT IN DC/DC CONVERTER CONTROLLER. SOFT BATTERY REVERSAL WITH PROGRAMMABLE TRANSITION TIME. ON-HOOK TRANSMISSION. PROGRAMMABLE OFF-HOOK DETECTOR THRESHOLD METERING PULSE GENERATION AND FILTER INTEGRATED RINGING INTEGRATED RING TRIP PARALLEL CONTROL INTERFACE (3.3V LOGIC LEVEL) PROGRAMMABLE CONS...

Evolvable hardware provides the capability to evolve analog circuits to produce amplifier and filter functions. Conventional analog controller designs employ these same functions. Analog controllers for the control of the shaft speed of a DC motor are evolved on an evolvable hardware plaform utilizing a Field Programmable Transistor Array (FPTA). The performance of these evolved controllers is ...

An intelligent fuzzy logic inference pipeline for the control of a dc-dc buck-boost converter was designed and built using a semi-custom VLSI chip. The fuzzy linguistics describing the switching topologies of the converter was mapped into a look-up table that was synthesized into a set of Boolean equations. A VLSI chip–a field programmable gate array (FPGA) was used to implement the Boolean equ...

‎ In this paper, the stand-alone photovoltaic system for cathodic protection of underground pipelines is presented. The proposed system offers continuous and automatic adjustment of the applied voltage so that the buried pipelines receive the exact current. A modified perturb and observe (P&O) algorithm for maximum power point tracking (MPPT) is used to improve dynamic and steady state performa...

Hearing aids partially overcome auditory deficits and normally employed for the hearing impaired people to compensate hearing loss. This paper takes an approach to design a system which have a digital filter bank which can separate the input speech signal into different bands and automatically gain is adjust for individual band. The system is developing on Field Programmable Gate Array (FPGA) p...

The non-linear dynamics of the chaotic 1D logistic map and its statistical and spectral properties are studied using MATLAB numerical simulations. We have developed an analog behavioral model and implemented logistic map on a field programmable analog array chip. Presented measurement results confirmed the chaotic behavior of the implemented system. Results show that field programmable analog a...

Voltage to current converters or TRANSCONDUCTANCE amplifiers, find its applications in both traditional analog ICs e.g. amplifier and filters as well as current analog VLSI e.g. Field programmable analog arrays and various other neural networks. A complete review of different linear V-I converter has been done in this paper. Since the basic V-I convertor circuit uses common source differential ...

We present a complete optoelectronic unit for polarization visualization, switching and control. The system is based on a Field Programmable Gate Array (FPGA) unit and comprises: an acquisition unit containing an analog polarimeter and digital-to-analog converters; an FPGA capable of implementing an optimal algorithm for three-stage arbitrary polarization tracking; and an electronic driver with...

The design and hardware implementation of a multi-carrier Gaussian minimum shift keying (GMSK) modulator, based on a direct digital synthesizer, suitable for global system for mobile (GSM) base station applications is described. The synthesizer does not only generate the baseband GMSK signal, but also delivers it at a low IF. Special care has been taken in order to minimize the required memory ...

This paper presents studying the design and performance of conducted-noise spectrum spreading in DC-DC converters. A novel technique for conducted-noise reduction has been proposed in this paper. The proposed technique uses three randomized parameters for generating the switching signals. These parameters are carrier frequency, duty-ratio, and the pulse position. This triple-hybrid spread-spect...