The photocell is a silicon photodiode integrated onto a chip together with a voltage-tofrequency convertor. This combination makes a light intensity-to-frequency convertor which has a linear dynamic range of six decades. The light intensity can then simply be determined by counting the frequency. The sensitive area is about two millirrietres square and the band of light produced by the cylindri...

This paper presents an interface circuit with power control features for electrostatic vibration energy harvesting. A DC-DC convertor is used to control the output voltage of a diode-based charge pump circuit. Therefore, the maximum and minimum voltage across the variable capacitor of the energy harvester may be adjusted to track the maximum power point of the system. The power conversion funct...

We present theory and algorithms for fast explicit computations of uniand multi-dimensional periodic splines of arbitrary order at triadic rational points and of splines of even order at diadic rational points. The algorithms use the forward and the inverse Fast Fourier transform (FFT). The implementation is as fast as FFT computation. The algorithms are based on binary and ternary subdivision ...

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 ...

This paper summarizes the development of the synchronization control technology of the multi-motor control system. And a model structure of multi-motor synchronization control system based on the monomaster PROFIBUS-DP network is proposed, which slaves are intelligent including PLC, convertor and motor. The communication mode of MS is adopted. The control tasks of the master and their slaves ar...

This paper presents an influence issue improved by victimisation buck-boost convertor for BLDC motor drive as a value effective answer for low power applications. AN approach of speed management of BLDC motor by dominant the DC link voltage of VSI (Voltage supply Inverter) is employed. This facilitates the operation of VSI at fundamental change by victimisation the electronic commutation of BLD...

Experiments have been conducted on a dual electric grid thermionic device to investigate an alternative method of space charge mitigation in a thermionic energy convertor (TEC). Two electric grids, the attractor and deflector grids, provide opposing electric fields to overcome space charge while minimizing power losses to the attractor grid. Electron beams are formed in the electrode gap provid...