Present handheld devices like Smart phones, can be charged wirelessly using new energy harvesting circuit technique through using the traditional wireless technologies. In this case, Bluetooth with a charging circuit enables a short-range wireless charging of a mobile handheld. This paper present the overview of new process of charging and structure of power charging based on Scotty diode with ...

A novel version of chaotic Colpitts oscillator is described. Instead of a linear loss resistor, it includes an extra inductor and a diode in the collector circuit of the transistor. The modified circuit in comparison with the common Colpitts oscillator may generate chaotic oscillations at the fundamental frequency f∗ noticeably closer to the threshold frequency fT of the employed bipolar juncti...

A battery charging circuit, which operates as a constant power source, is proposed in this paper. By maintaining a constant output power throughout the charging process, the circuit reduces the size of thermal installation which would normally be required in the cases of constant-voltage or constant-current charging. The proposed circuit takes the form of a half-bridge converter with an additio...

This paper describes the design of a high speed semiconductor laser diode driver designed for driving 500 mW to 1.5 W diodes at full optical power modulation up to frequencies of 10 MHz. The duty cycle of the modulation may be varied. A switching power-converter based current source allows a higher power delivery efficiency to the diode than in previous designs, allowing for a more modest power...

Present handheld devices like Smart phones, can be charged wirelessly using new energy harvesting circuit technique through using the traditional wireless technologies. In this case, Bluetooth with a charging circuit enables a short-range wireless charging of a mobile handheld. This paper present the overview of new process of charging and structure of power charging based on Scotty diode with ...

The electron beam assisted chemical vapor deposit ion of silicon nitride anti-reflection coatings onto thin film CdS/CuInSe2 solar cells and the resultant effects on their performance are reported. In some cases large increases in the short circuit current, open circuit voltage and fill factor were observed. The present results are explained by the usual index matching anti-reflection mechanism...

A pixel design for active matrix organic light emitting diode (AM-OLED) displays employing hydrogenated amorphous silicon (a-Si:H) thin film transistors (TFTs) is proposed. The proposed pixel circuit, which composed of five TFTs and one capacitor, could compensate the shift of threshold voltage of OLED as well as the threshold voltage of a-Si:H. We fabricated the pixel circuits on the glass sub...

A novel diode-checkerboard test structure (DCTS) is presented to determine open circuit defects and short circuit defects as well as to investigate the 3D-influence of underlying topography. The arrangement of the DCTS in a standard boundary pad frame and the digitally measuring procedure evaluate a fast and effective (efficient) online process characterization. The precise defect detection and...

A very simple nonlinear parallel forced LCR circuit is proposed as Balamurugan-Sengodan-Daniel (BSD) circuit includes linear inductors, capacitor, locally active resistor and a diode driven by a sinusoidal voltage source. By varying the amplitude of the external signal, we identify the familiar quasiperiodic routes to chaos as well as period doubling sequences, windows, and so on. The performan...

This paper presents a new structure for a six-port reflectometer which due to its simplicity can be implemented very easily in monolithic microwave integrated-circuit (MMIC) technology. It uses nonmatched diode detectors with a high input impedance which are placed around a phase shifter in conjunction with a power divider for the reference detector. The circuit has been fabricated using the F2...