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Title: A Low-Voltage Low-Power Comparator With Current-Controlled Dynamically-Biased Preamp
Page Link: A Low-Voltage Low-Power Comparator With Current-Controlled Dynamically-Biased Preamp -
Posted By: nizamt
Created at: Thursday 17th of August 2017 06:53:30 AM
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A Low-Voltage Low-Power Comparator With
Current-Controlled Dynamically-Biased
Preamplifiers For DCM Buck Regulators
Hoi Lee
Department of Electrical Engineering,
The University of Texas at Dallas,
Richardson, TX 75080-3021, USA.
Abstract-
Comparator-controlled power switch has been widely used to improve power efficiencies of discontinuous-conductionmode (DCM) buck regulators. Some major design challenges are capabilities of the comparator to operate at low voltage and dissipate low power for low-voltage DCM ....etc
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Title: over voltage and under voltage protection
Page Link: over voltage and under voltage protection -
Posted By: Andrew
Created at: Thursday 17th of August 2017 06:57:49 AM
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REGULATED POWER SUPPLY
1.1 Types of Power Supply
There are many types of power supply. Most are designed to convert high voltage AC mains electricity to a suitable low voltage supply for electronic circuits and other devices. A power supply can by broken down into a series of blocks, each of which performs a particular function.
For example a 5V regulated supply:
Figure 1.1 block diagram of a regulated power supply
Each of the blocks is described in more detail:
Transformer- steps down high voltage AC mains ....etc
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Title: Protection of Low-Voltage DC Micro-grids
Page Link: Protection of Low-Voltage DC Micro-grids -
Posted By: vineeth
Created at: Thursday 17th of August 2017 07:56:56 AM
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ABSTRACT
LV dc microgrid is used to interconnect distributed resources and sensitive electronic loads. To ensure reliable operation of the LV dc microgrid, it is important to have a well-functioning protection system. When designing an LV dc microgrid protection system, knowledge from existing dc power systems can be used. However, in most cases, these systems use grid-connected rectifiers with current-limiting capability during dc faults. In contrast, an LV dc microgrid must be connected to an ac grid through conver ....etc
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Title: LOW COST WIRELESS MESSAGING SYSTEM FOR SHORT RANGE
Page Link: LOW COST WIRELESS MESSAGING SYSTEM FOR SHORT RANGE -
Posted By: anjukrishnaj7
Created at: Thursday 05th of October 2017 04:20:22 AM
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abstract
This system uses RF transmission technology. The RF transceiver module which I use has a range up to 100 metres in ideal conditions. This module can transmit and receive 4-bit parallel data with or without 8 address bits using a specific encoder and decoder IC s. Another module can be designed such that it can transmit and receive 8-bit parallel data with or without 10 address bits using a specific encoder and decoder IC s. The advantage of having the address bits is that message transfer can be made secure.
8-bit parallel ....etc
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Title: multiple starter with overload and high low voltage protection
Page Link: multiple starter with overload and high low voltage protection -
Posted By: cxe_killer
Created at: Thursday 17th of August 2017 04:58:45 AM
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i need the relevant materials with proper description of the title multiple starter with overload and high low voltage protection ....etc
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Title: short circuit protection in dc low voltage systems abstract
Page Link: short circuit protection in dc low voltage systems abstract -
Posted By: harishuw
Created at: Thursday 05th of October 2017 04:51:38 AM
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Title: high low voltage protection circuit using 555 timer ic
Page Link: high low voltage protection circuit using 555 timer ic -
Posted By: chinna_rao
Created at: Thursday 05th of October 2017 05:17:03 AM
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please send about this project to my mail [email protected] ....etc
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Title: high low voltage cut off with time delay circuit using ic lm324
Page Link: high low voltage cut off with time delay circuit using ic lm324 -
Posted By: NANDA
Created at: Thursday 17th of August 2017 04:48:59 AM
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To get full information or details of high low voltage cut off with time delay please have a look on the pages
http://seminarsprojects.net/Thread-high-and-low-voltage-cut-off-with-time-delay
if you again feel trouble on high low voltage cut off with time delay please reply in that page and ask specific fields in high low voltage cut off with time delay ....etc
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Title: circuit diagram for over voltage and under voltage protection using lm324
Page Link: circuit diagram for over voltage and under voltage protection using lm324 -
Posted By: mastrounak
Created at: Thursday 05th of October 2017 04:59:11 AM
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Title: short wave diathermy block diagram
Page Link: short wave diathermy block diagram -
Posted By: [email protected]
Created at: Friday 06th of October 2017 02:46:52 PM
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Short Wave Diathermy (SWD) undefined
undefined
Frequency ( ) 107 108 Hz
Radio wavelength ( ) 3 -30 m
Commonly used frequency ( ) is 27.12 MHz and wavelength 11 m.
It this current two circuits are used. Machine circuit is coupled with the patient circuit leading to resonance phenomenon, in this way patient is treated.
A. Machine circuit:
The basic oscillator circuit consists of condenser, inductance, and the currents of different frequencies are obtained by selecting suitable condenser and inductance. It a current of very high fr ....etc
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