scholarly journals A simple power supply and control unit for pulsed operation of a microchannel plate imaging detector

Sadhana ◽  
1999 ◽  
Vol 24 (3) ◽  
pp. 235-243 ◽  
Author(s):  
J Upadhyay ◽  
H R Bundel ◽  
R Chandra ◽  
J A Chakera ◽  
C P Navathe ◽  
...  
Keyword(s):  
Power Supply ◽  
Control Unit ◽  
Microchannel Plate ◽  
Simple Power ◽  
Imaging Detector ◽  
And Control

scholarly journals Rancangan Catu Daya Cadangan SRAM Pada Z80 Trainer

2021 ◽  
Vol 3 (1) ◽  
pp. 19-22
Author(s):  
Hidayat Tahir ◽  
Syahrir Abdussamad ◽  
Iskandar Zulkarnain Nasibu
Keyword(s):  
Power Supply ◽  
Source Code ◽  
Control Unit ◽  
Switching Control ◽  
Test Results ◽  
Li Ion Battery ◽  
Teaching Aids ◽  
Li Ion ◽  
And Control ◽  
Write Source

Z80 Trainer banyak digunakan dalam praktikum maupun alat bantu peraga terkait pembelajaran mikroprosesor. Dalam penggunaannya, Z80 Trainer menggunakan keypad untuk menulis kode sumber secara manual dan selanjutnya disimpan dalam memori secara volatile.  Masalah yang sering terjadi adalah putusnya pasokan daya ke Z80 Trainer sehingga program yang telah ditulis tidak tersimpan dan harus ditulis kembali. Penelitian ini ditujukan untuk merancang dan mengontrol catu daya cadangan untuk SRAM di Z80 Trainer menggunakan baterai, yang mampu mendeteksi terputusnya suplai daya dari tegangan listrik PLN untuk memastikan bahwa data dan program yang telah ditulis dan tersimpan di memori tidak terhapus. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dan perancangan alat yang dilaksanakan dilaboratorium. Penelitian ini telah menghasilkan alat yang dapat mengontrol catu daya cadangan berasal dari baterai melalui rangkaian switching control unit untuk SRAM di Z80 Trainer. Hasil pengujian unjuk kerja mendapati bahwa alat yang telah dibuat dapat mengontrol atau mengatur catu daya di SRAM disaat catu daya utama PLN terputus selama kurang lebih 26 hari dengan memakai baterai Li-Ion tipe 18650 berkapasitas 3000 mAh. Pengujian lama waktu penggunaan alat d kondisi normal menggunakan catu daya cadangan mendapatkan hasil sekitar ±20 jam.Z80 Trainer is widely used in practicum and teaching aids related to microprocessor learning. In use, the Z80 Trainer uses a keypad to write source code manually and then stored in volatile memory. The problem that often occurs is that the power supply to the Z80 Trainer is cut off so that the written program is not saved and has to be rewritten. This research is designed to build and control a backup power supply for SRAM on the Z80 Trainer using a battery, which can meet the power supply cut off from the PLN mains voltage to ensure that data and programs that have been written and stored in memory are not deleted. The method used in this research is the experimental method and the design of the tools carried out in the laboratory. This research has produced a tool that can control the backup power supply coming from the battery via a circuit of the switching control unit for the SRAM on the Z80 Trainer. The test results prove that the tool that has been made can control or build power in SRAM when the main power supply is cut off for less than 26 days using a Li-Ion battery type 18650 with a capacity of 3000 mAh. Testing the length of time to use the tool under normal conditions using a backup power supply to get the result of about ± 20 hours. 

Research on Semi Physical Test System of PCU on Satellite

2011 ◽  
Vol 295-297 ◽  
pp. 2540-2543
Author(s):  
Fang Fang Sun ◽  
Wei Dong Ye ◽  
Cai Ping Liang
Keyword(s):  
Power System ◽  
Power Control ◽  
Power Supply ◽  
Control Unit ◽  
Test System ◽  
Working Environment ◽  
Control Software ◽  
Physical Test ◽  
Solar Battery ◽  
And Control

Power control unit (PCU) is an important component of space power system on satellite; it provides power supply to main bus and regulates output status of solar battery array in light district. So it is very important to test the performance of PCU before equipped in satellite. A semi physical test system for PCU is developed in this paper, some Agilent simulators are used to simulate working environment of PCU, and control software is programmed to control these simulator as well.

scholarly journals Design and Research on Power Systems and Algorithms for Controlling Electric Underground Mining Machines Powered by Batteries

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 4060
Author(s):  
Artur Kozłowski ◽  
Łukasz Bołoz
Keyword(s):  
Power Systems ◽  
Power Supply ◽  
Internal Combustion Engines ◽  
Underground Mining ◽  
Test Stand ◽  
Research Network ◽  
Control Algorithms ◽  
Systems And Control ◽  
And Control ◽  
Supply Systems

This article discusses the work that resulted in the development of two battery-powered self-propelled electric mining machines intended for operation in the conditions of a Polish copper ore mine. Currently, the global mining industry is seeing a growing interest in battery-powered electric machines, which are replacing solutions powered by internal combustion engines. The cooperation of Mine Master, Łukasiewicz Research Network—Institute of Innovative Technologies EMAG and AGH University of Science and Technology allowed carrying out a number of works that resulted in the production of two completely new machines. In order to develop the requirements and assumptions for the designed battery-powered propulsion systems, underground tests of the existing combustion machines were carried out. Based on the results of these tests, power supply systems and control algorithms were developed and verified in a virtual environment. Next, a laboratory test stand for validating power supply systems and control algorithms was developed and constructed. The tests were aimed at checking all possible situations in which the battery gets discharged as a result of the machine’s ride or operation and when it is charged from the mine’s mains or with energy recovered during braking. Simulations of undesirable situations, such as fluctuations in the supply voltage or charging power limitation, were also carried out at the test stand. Positive test results were obtained. Finally, the power supply systems along with control algorithms were implemented and tested in the produced battery-powered machines during operational trials. The power systems and control algorithms are universal enough to be implemented in two different types of machines. Both machines were specially designed to substitute diesel machines in the conditions of a Polish ore mine. They are the lowest underground battery-powered drilling and bolting rigs with onboard chargers. The machines can also be charged by external fast battery chargers.

Web-Based Small Scaled Portable Data Acquisition and Control Unit for Demand Side Load

2020 ◽  
Author(s):  
Meer Shadman Shafkat Tanjim ◽  
Ashrafun Nushra Oishi ◽  
Ali Azam Sojib ◽  
Md. Bashir Ahmmad ◽  
Md. Shaiful Islam ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Control Unit ◽  
Demand Side ◽  
Web Based ◽  
Side Load ◽  
And Control

Clock cycle estimation based on dead time and control unit area minimization

1994 ◽  
Vol 40 (10-12) ◽  
pp. 821-824 ◽  
Author(s):  
H. Mecha ◽  
M. Fernández ◽  
R. Hermida ◽  
D. Mozos ◽  
K. Olcoz
Keyword(s):  
Dead Time ◽  
Unit Area ◽  
Clock Cycle ◽  
Control Unit ◽  
Area Minimization ◽  
And Control

Design of the Half-Bridge Switching and Regulated Power Supply Based on PWM

2012 ◽  
Vol 546-547 ◽  
pp. 352-356
Author(s):  
Jian Wei Liang ◽  
Yin Feng Wu ◽  
Ling Liang
Keyword(s):  
Software Design ◽  
Power Supply ◽  
Pulse Width ◽  
Power Supply System ◽  
Control Unit ◽  
Supply System ◽  
Microprocessor Control ◽  
Modeling Simulation ◽  
Power Simulation ◽  
Hardware Circuit

The article introduces the design of the half-bridge switching and regulated power supply system which is based on PWM. The design mainly consists of regulated power supply’s structure of basic hardware circuit, its working principles and the process of modeling simulation and software design. The control circuit controls SG3525 chip to output PWM wave through the Microprocessor Control Unit (MCU) of AT89C51 and drives IGBT through the chip of EXB841 as well. The MCU is also used to realize the keyboard process and controls of the pulse width and frequency. Taking advantage of Simulink (dynamic simulation Toolbox) and SimPowerSysterm (power simulation Toolbox) of MATLAB, it simulates the designed regulated power supply. According to the simulation result of this design, the system has high stability and good output waveform. The operation of the design is simple and clear with less software operation and higher speed.

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