Three-phase AC-voltage regulatior systems using silicon controlled rectifier (SCR) have been broadly applied in industrial field.This paper introduces a novel design of three-phase AC-voltage regulation trigger circuitry with SCR and STM32 microcontroller, and presents its application in an energysaving design of oil extractor control system. This design employs photoelectric isolation techniqu...

A bandgap reference circuit that uses high-voltage drainextended MOS (DeMOS) devices is presented for high supply voltage application without using a voltage regulator for the bandgap core circuit. The bandgap reference circuit was fabricated using commercially available 0.18μm high-voltage DeMOS technology. Measurement result of the chip shows that the reference voltage change rate for VDD var...

The existence of unreliable renewable energy resources would be required to use energy resources and storage units simultaneously, particularly in applications such as electrical vehicles and stand-alone energy supplying systems. The objective of this paper is to introduce a new topology of multi input converter in hybrid power supply system of photovoltaic, fuel cell and battery for medium pow...

An active filter-based on-chip DC–DC voltage converter for application to distributed on-chip power supplies in multivoltage systems is described in this paper. No inductor or output capacitor is required in the proposed converter. The area of the voltage converter is therefore significantly less than that of a conventional low-dropout (LDO) regulator. Hence, the proposed circuit is appropriate...

Abstract The flexible on-load transformer can be adapted to different application scenarios by adding power electronic converter structures through the use of existing transformers. In this paper, a regulator structure based on floating capacitor multi-level AC/AC is proposed, which compensate input voltage primary side in same direction or opposite direction, combine with tap-changer, and also...

in order to identify the effects of vitamin a and aspirin on reducing uv lightinduced retinopathy, erg waves were compared before and after uv light exposure in rabbits. 30 rabbits were divided into 3 groups: the first group received vitamin a, 50,000 units i.m., single dose, the second group received aspirin, 50 mg/ kg/day po and the third group did not receive any medication. all three groups...

While all computation can potentially generate electromagnetic (EM) side-channel signals, some of the strongest and farthest-propagating signals are created when an existing strong periodic signal (e.g. a clock signal) becomes stronger or weaker (amplitude-modulated) depending on processor or memory activity. However, modern systems create emanations at thousands of different frequencies, so it...

Fully controlled rectifier and Battery Charge Regulator (BCR). BCR is the main unit of UPS ( Uninterruptable Power Supply ) equipment. The fully has function supplying voltage directly to BCR, regulating battery charge. Forced charging at a constant with current that matches life will have an impact on decreasing life, besides it efficiency using battery. Controlling input as regulated by magni...

This paper presents the performance of the extended Kalman filter (EKF) for speed sensorless indirect field oriented control (IFOC) of a squirrel cage induction motor (IM) supplied by a pulse width modulated (PWM) voltage-source inverter. The rotor speed of the induction motor is estimated, according to this method, using the direct measurements of the stator voltages and currents without the s...