FEPET08-MOSFET Based DC-DC Buck Converter/ Chopper

FEPET08-MOSFET Based DC-DC Buck Converter/ Chopper

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FE’s Power Electronics Applications Trainers are meant to demonstrate and help the users learn about applying the power devices in their applications using an intelligent study environment, specially designed for the purpose. This is a stand alone, all inclusive facility with high resolution power sourcing and measuring facilities along with most useful oscilloscope functions. The integrated two channel differential oscilloscope functions are used to view all the important voltages and currents enabling users get a through understanding of the design ideas with ease and convenient. The oscilloscope function makes use of TFT colour LCD,professional encoders and switches. In short, the environment helps the users learn, understand and get insights on the principles on engaging the power devices in their applications.

The application circuitry of the trainers give more design options to the users in an encouraging to facilitate maximum learning in the given time. Also, all the parts of the circuitry are well protected against unintended shorts and mis-wiring to provide a long maintenance-free life in the laboratory

Functional Description

In this trainer, a Buck converter is implemented using a MOSFET. A microcontroller based digitally controlled PWM signals are provided with proper gate drive circuitry for driving the MOSFET. The PWM frequency can be varied from 1Khz to 10Khz and the duty cycle can be varied from 5% to 95% using a rotary encoder. Multiple inductors, capacitors and load resistors are provided for the user to try out varous designs and implementations. User can make the circuit operate in either continuous conduction mode or discontinuous conduction mode by varying the components or the PWM parameters.

MOSFET DC-DC Buck Converter

The trainer comes with a built-in, stand alone, two channel differential oscilloscope functions to help the users view voltage and current waveforms around the application circuitry. The oscilloscope function is based on the colour TFT LCD to display the waveforms and take user inputs with digital encoders just like a professional oscilloscopes. In each of the two channels, any one of these waveforms can be displayed: Vsw’, Vout, Vpwm, Vg, Iind, Isw, Id. For each channel, a set of mathematical measurements on the acquired signal is displayed in real time. The possibilities are: Peak-to-Peak, Average, RMS, Maximum and Minimum. All these measurements channels are completely differential, enabling the users to make floating measurements without any difficulty. Following are the parts of the trainer:

Marketing Partners: contact us at feplslm@gmail.com

Application Circuit

DC power supply.

MOSFET

Microcontroller based PWM generator.

MOSFET driver.

Inductors.

Capacitors.

Loads.

Marketing Partners: Please contact us at feplslm@gmail.com

FEPET08-MOSFET Based DC-DC Buck Converter/ Chopper

FEPET08-MOSFET Based DC-DC Buck Converter/ Chopper

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FE’s Power Electronics Applications Trainers are meant to demonstrate and help the users learn about applying the power devices in their applications using an intelligent study environment, specially designed for the purpose. This is a stand alone, all inclusive facility with high resolution power sourcing and measuring facilities along with most useful oscilloscope functions. The integrated two channel differential oscilloscope functions are used to view all the important voltages and currents enabling users get a through understanding of the design ideas with ease and convenient. The oscilloscope function makes use of TFT colour LCD,professional encoders and switches. In short, the environment helps the users learn, understand and get insights on the principles on engaging the power devices in their applications.

The application circuitry of the trainers give more design options to the users in an encouraging to facilitate maximum learning in the given time. Also, all the parts of the circuitry are well protected against unintended shorts and mis-wiring to provide a long maintenance-free life in the laboratory

Functional Description

In this trainer, a Buck converter is implemented using a MOSFET. A microcontroller based digitally controlled PWM signals are provided with proper gate drive circuitry for driving the MOSFET. The PWM frequency can be varied from 1Khz to 10Khz and the duty cycle can be varied from 5% to 95% using a rotary encoder. Multiple inductors, capacitors and load resistors are provided for the user to try out varous designs and implementations. User can make the circuit operate in either continuous conduction mode or discontinuous conduction mode by varying the components or the PWM parameters.

MOSFET DC-DC Buck Converter

The trainer comes with a built-in, stand alone, two channel differential oscilloscope functions to help the users view voltage and current waveforms around the application circuitry. The oscilloscope function is based on the colour TFT LCD to display the waveforms and take user inputs with digital encoders just like a professional oscilloscopes. In each of the two channels, any one of these waveforms can be displayed: Vsw’, Vout, Vpwm, Vg, Iind, Isw, Id. For each channel, a set of mathematical measurements on the acquired signal is displayed in real time. The possibilities are: Peak-to-Peak, Average, RMS, Maximum and Minimum. All these measurements channels are completely differential, enabling the users to make floating measurements without any difficulty. Following are the parts of the trainer:

Marketing Partners: contact us at feplslm@gmail.com

Application Circuit

DC power supply.

MOSFET

Microcontroller based PWM generator.

MOSFET driver.

Inductors.

Capacitors.

Loads.

 

Marketing Partners: Please contact us at feplslm@gmail.com

FEPET07- Single Phase Half/Full Controlled SCR Converter

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Marketing Partners: contact us at feplslm@gmail.com

FE’s Power Electronics Applications Trainers are meant to demonstrate and help the users learn about applying the power devices in their applications using an intelligent study environment, specially designed for the purpose. This is a stand alone, all inclusive facility with high resolution power sourcing and measuring facilities along with most useful oscilloscope functions. The integrated two channel differential oscilloscope functions are used to view all the important voltages and currents enabling users get a through understanding of the design ideas with ease and convenient. The oscilloscope function makes use of TFT colour LCD, professional encoders and switches. In short, the environment helps the users learn, understand and get insights on the principles on engaging the power devices in their applications.

The application circuitry of the trainers give more design options to the users in an encouraging to facilitate maximum learning in the given time. Also, all the parts of the circuitry are well protected against unintended shorts and mis-wiring to provide a long maintenance-free life in the laboratory.

Functional Description

In this trainer, half and full wave controlled rectification is implemented using SCR. The load is grounded and the SCR is left floating. Therefore, a pulse transformer is available to isolate the triggering circuit from the switching devices. The user has the option to choose either a SCR bridge or a single SCR for rectification. UJT triggering is provided with a suitable multi-winding pulse transformer for triggering four SCRs simultaneously.

Single Phase Half-Full SCR Converter

The trainer comes with a built-in, stand alone, two channel differential oscilloscope functions to help the users view voltage and current waveforms around the application circuitry. The oscilloscope function is based on the colour TFT LCD to display the waveforms and take user inputs with digital encoders just like a professional oscilloscopes. In each of the two channels, any one of these waveforms can be displayed: Vac, Vld, Vak, Vgk, Vz, Ve, Vb1. For each channel, a set of mathematical measurements on the acquired signal is displayed in real time. The possibilities are: Peak-to-Peak, Average, RMS, Maximum and Minimum. All these measurements channels are completely differential, enabling the users to make floating measurements without any difficulty. Following are the parts of the trainer.

Application Circuit

AC Power Supply.

Load.

Single SCR.

SCR bridge.

Isolated UJT triggering circuit.

Marketing Partners: contact us at feplslm@gmail.com

Topview Simulator for Atmel 8031 Microcontrollers

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Facility to simulate the complete 8051 microcontroller.
Facility to simulate the architecture, on chip peripherals and many external embedded modules.
Built in Integrated support to use the SDCC C compiler for program development.
Built in Code Editor to support C program development and the assembly code.
Built in Code Debugging facilities to support both C language and the assembly code with Break Point, Single Step and Software Breakpoints.
Built in facility to generate the application code for the embedded modules either in C or in assembly language.
Facility to start and finish the total project in the simulation environment.
Built in Simulation facilities:
Range of Point LEDs and Seven Segment LEDs.
LCD modules of many configurations.
Momentary ON keys.
A variety of keypads up to 4×8 key matrix.
Toggle switches.
All modes of on chip serial port.
IIC components including RTC, EEPROMs.
SPI Bus based EEPROM devices.
Suitable for Atmel AT89CXX Microcontrollers.

Completed Project in simulator
Completed Project in simulator 2

 

FPGA-Application-Module-Feature-Image

FPGA Application Module

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250K-gate Xilinx Spartan 3E FPGA XC3S250E @ 300MHZ.

250K System Gates with 5508 Logic Cells.

612 Configurable Logic Blocks.

38K Bits of Distributed RAM and 216K Bits of Block RAM.

12 Nos. of Dedicated Multipliers.

4 Nos. of Digital Clock Managers.

Application Module Block Diagram

I/O Lines with 40 Pairs of differential I/O lines.

I/O Lines support both single ended and differential ended standards.

100MHZ Reference Oscillator for FPGA.

16Mb Data Flash to store user application code with file management.

On board FPGA Configuration facility for stand alone operation.

Supports USB based Programming for both FPGA and Data Flash.

2 Nos. of 64-Pin Expansion Connector with maximum of 100 I/O lines.

5V 3A Power Supply to support the current required by FPGA and other add on circuits.

Xilinx ISE and WebPACK Software for code development.

User manual.

FPGA Project Board to hold the above hardware.

Application Module with ProtoBoard

In Circuit Emulator for Atmel 8051 Microcontrollers

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Topview In Circuit Emulator is the low cost emulator supporting many of Atmel 8051 microcontroller derivative devices in 40 and 20 pin counts. The Topview ICE comes with a state of art Integrated Development Environment enabling the users troubleshoot the application software and the hardware in real time with ease and confidence. The IDE has built-in program editor, device template generator and the debugging facilities. The emulator has the facility to debug source level debugging facilities for both C and ASM programs. Other features like on line assembler, dis-assembler, software trace, break point options make the emulator very much versatile for very complicated applications.

In short, the Topview ICE is the advanced development tool that will reduce the project time to a large extent enabling the designers undertake more projects than before.

Features:

Supported Devices: Atmel 8051 Microcontrollers with on chip flash memory in a single chip
mode.

List of devices:

AT89C1051, AT89C1051U, AT89C2051, AT89C4051, AT89C51, AT89C51RC, AT89S51, AT89C52, AT89S52, AT89C55, AT89C55WD, AT89S53, AT89S8252, AT89S8253.

Real time operations upto 24MHz.

Operating clock options: The emulator uses either built in clock or any other clock source connected with the target microcontroller. The built in clock oscillator generates a range of clock options: 4 MHz, 4.608 MHz, 8 MHz, 9.216 MHz, 10 MHz, 12 MHz, 16 MHz, 18.432MHz, 20 MHz and 24MHz.
5V operation.
Supports upto 64 KBytes of Program Memory.
Supports upto 256 Bytes of internal Data Memory.
Supporting both 20 and 40 pin DIP devices.
Connected with PC through USB port.
Topview IDE runs under WinXP environment.

Facilities:

Emulation Memory: Topview ICE-B provides 64Kbytes of space for the program memory.

Software BreakPoints: Software BreakPoints allow the real time program execution until the specific program line.

Conditional BreakPoints: A set of conditional breakpoints permit the program halting during the emulation based on specific code address, source code lines and the register contents.

Language and file formats: Topview ICE – B accepts files with many formats. It also accepts different assemblers and C languages. For the ASM program, Intel Hex format is accepted. For the C environment, both KEIL and SDCC compilers are supported.

Source Level Debugging: The Topview IDE comes with a Source Level Debugger which helps the designers debug the application code generated by both the assembler and the C language. This debugger includes the commands to generate all the required information during the program and hardware testing in real time. The commands permit setting breakpoints based on high level language lines, adding a watch window with symbols and variables of interest, modifying the variables, executing assembly steps and many more useful functions.

FEPET06 – TRIAC Single Phase AC Power Control

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Marketing Partners: contact us at feplslm@gmail.com

FE’s Power Electronics Applications Trainers are meant to demonstrate and help the users learn about applying the power devices in their applications using an intelligent study environment, specially designed for the purpose. This is a stand alone, all inclusive facility with high resolution power sourcing and measuring facilities along with most useful oscilloscope functions. The integrated two channel differential oscilloscope functions are used to view all the important voltages and currents enabling users get a through understanding of the design ideas with ease and convenient. The oscilloscope function makes use of TFT colour LCD, professional encoders and switches. In short, the environment helps the users learn, understand and get insights on the principles on engaging the power devices in their applications.

The application circuitry of the trainers give more design options to the users in an encouraging to facilitate maximum learning in the given time. Also, all the parts of the circuitry are well protected against unintended shorts and mis-wiring to provide a long maintenance-free life in the laboratory.

Functional Description

In the trainer, AC power control is designed using a TRIAC. The TRIAC is grounded and the load is connected in a floating configuration enabling direct connection to various triggering circuits. Five types of triggering are available on board: R trigger, RC trigger, UJT trigger, Op-amp trigger and Microcontroller triggering. A resistive and lamp loads are also included in the circuitry.

TRIAC Single Phase AC Power Control

In-built Two Channel Differential Oscilloscope Function

The trainer comes with a built-in, stand alone, two channel differential oscilloscope functions to help the users view voltage and current waveforms around the application circuitry. The oscilloscope function is based on the colour TFT LCD to display the waveforms and take user inputs with digital encoders just like a professional oscilloscopes. In each of the two channels, any one of these waveforms can be displayed: Vac, Vld, Vm1m2, Vgm1, Ve, VC, Vref and Vop.For each channel, a set of mathematical measurements on the acquired signal is displayed in real time. The possibilities are: Peak-to-Peak, Average, RMS, Maximum and Minimum. All these measurements channels are completely differential, enabling the users to make floating measurements without any difficulty.

Application Circuit

The application circuit contains the following:

AC Power Supply.

Loads.

Study Device:TRIAC.

R/RC Trigger.

UJT Trigger.

Op-Amp Trigger.

Microcontroller Trigger.

Marketing Partners: contact us at feplslm@gmail.com

FEPET05 – SCR Single Phase AC Power Control

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Marketing Partners: contact us at feplslm@gmail.com

FE’s Power Electronics Applications Trainers are meant to demonstrate and help the users learn about applying the power devices in their applications using an intelligent study environment, specially designed for the purpose. This is a stand alone, all inclusive facility with high resolution power sourcing and measuring facilities along with most useful oscilloscope functions. The integrated two channel differential oscilloscope functions are used to view all the important voltages and currents enabling users get a through understanding of the design ideas with ease and convenient. The oscilloscope function makes use of TFT colour LCD, professional encoders and switches. In short, the environment helps the users learn, understand and get insights on the principles on engaging the power devices in their applications.

The application circuitry of the trainers give more design options to the users in an encouraging to facilitate maximum learning in the given time. Also, all the parts of the circuitry are well protected against unintended shorts and mis-wiring to provide a long maintenance-free life in the laboratory.

Functional Description

In the trainer, half wave AC power control is designed using a SCR. The SCR is grounded and the load is connected in a floating configuration enabling direct connection to various triggering circuits. Five types of triggering are available on board: R trigger, RC trigger, UJT trigger, Op-amp trigger and Microcontroller triggering. A resistive and lamp loads are also included in the circuitry.

SCR Single Phase AC Power Control

In-built Two Channel Differential Oscilloscope Function

The trainer comes with a built-in, stand alone, two channel differential oscilloscope functions to help the users view voltage and current waveforms around the application circuitry. The oscilloscope function is based on the colour TFT LCD to display the waveforms and take user inputs with digital encoders just like a professional oscilloscopes. In each of the two channels, any one of these waveforms can be displayed: Vac, Ved, Vak, Vgk, Ve, Vc, Vref and Vop. For each channel, a set of mathematical measurements on the acquired signal is displayed in real time. The possibilities are: Peak-to-Peak, Average, RMS, Maximum and Minimum. All these measurements channels are completely differential, enabling the users to make floating measurements without any difficulty.

Application Circuit

The application circuit contains the following:

AC Power Supply.

Loads.

Study Device: SCR.

R/RC Trigger.

UJT Trigger.

Op-Amp Trigger.

Microcontroller Trigger.

Marketing Partners: contact us at feplslm@gmail.com

FEPET04 – Study of SCR Characteristics

FEPET04 – Study of SCR Characteristics

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Marketing Partners: contact us at feplslm@gmail.com

Introduction

The understanding on the device characteristics is the most important part of power electronics study. The line of power electronics trainers are aimed at making the study convenient and complete. The devices are connected to a well protected circuit with digitally controlled power supplies and accurate metering. A TFT colour LCD along with encoders and switches are used for user interaction to make the setup user-friendly and convenient. The user can set the control of the digital power supplies manually or use one of the auto-plot modes to plot the V-I characteristics of the device instantly.

This setup enables the user to forget about getting the circuit to work and focus on learning the intricacies of the device characteristics. The auto-plot feature enables the user see the textbook waveforms of the V-I characteristics in an instant.

The usage of proper current source power supplies for current controlled devices like SCR and TRIAC enables the user to set a constant current value. This makes it possible to find the actual trigger point of the device, which would be otherwise impossible with any other regular lab setup with a voltage source.

The system consists of the following:

Device Under Test – SCR.

Load resistor.

Programmable voltage source – Vaa.

Programmable voltage source – Vg.

High resolution measurements – Vaa, Vak, Vgk.

Current measurement – Ia, Ig.

Trainer User Interface

The user interface of the trainer consists of a TFT LCD to display the measurements and graphs along with encoders and switches to get inputs from the user. The trainer has multiple modes of operations meant for direct display of set and measured values and also for the automatic display of waveforms.

To power up the SCR, a programmable voltage sources Vaa and the programmable current source Ig are made available in the system.

Operating Modes of the Trainer

Measurement Mode

In the measurement mode, all power supplies are user controlled and both set and measured voltage/ current values are displayed, enabling the user to manually adjust the parameters and view measurements.

For the power supplies Vaa and Ig, the SET and ACTUAL values are displayed side by side on the LCD. The measurements Vak, Vgk, and Ia are also displayed on the LCD. The encoders and tactile switches can be used to manually adjust the power supplies and record the measurements to study the device characteristics.

Auto-Plot Mode – SCR V-I Characteristics

The V-I characteristics mode plots Vak versus Ia for user set values of Ig. When the AUTO PLOT switch is pressed, the Vaa voltage is varied from 0 to 25V automatically and the measured Vak and Ia values are plotted. Before starting this plot, user is required to set the value of Ig. A maximum of five plots can be displayed on the screen simultaneously.

The Auto-Plot modes are incorporated into the system to ensure the users, most of the time students, about the proper operations of the target device and inspires them to take up the device study with confidence and ease. The users have to generate all the plots by themselves. Auto-Plot graphs are only visual reference to them and plot values are not available to the users.

FEPET03 – Study of TRIAC Characteristics

FEPET03 – Study of TRIAC Characteristics

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Marketing Partners: contact us at feplslm@gmail.com

Introduction

The learning on the device characteristics is the most important part of power electronics study. The line of power electronics trainers are aimed at making the study convenient and complete. The devices are connected to a well protected circuit with digitally controlled power supplies and accurate metering. A TFT colour LCD along with encoders and switches are used for user interaction to make the setup user-friendly and convenient. The user can set the control of the digital power supplies manually or use one of the auto-plot modes to plot the V-I characteristics of the device instantly.

This setup enables the user to forget about getting the circuit to work and focus on learning the intricacies of the device characteristics. The auto-plot feature enables the user see the textbook waveforms of the V-I characteristics in an instant.

The system consists of the following:

Device Under Test – TRIAC.

Load resistor.

Programmable voltage source – Vmm.

Programmable current ource – Vg.

High resolution measurements – Vmm, Vm1m2, Vgm1.

Current measurement – It, Ig.

Trainer User Interface

The user interface of the trainer consists of a TFT LCD to display the measurements and graphs along with encoders and switches to get inputs from the user. The trainer has multiple modes of operations meant for direct display of set and measured values and also for the automatic display of waveforms.

To power up theTRIAC, programmable voltage sources, Vmm and the programmable current source Ig are also provided on board.

Operating Modes of the Trainer

Measurement Mode

In the measurement mode, all power supplies are user controlled and both set and measured voltage/ current values are displayed, enabling the user to manually adjust the parameters and view measurements.

For the power supplies Vmm, and Ig, the SET and ACTUAL values are displayed side by side on the LCD. The measurements Vm1m2,Vgm1 and It are also displayed on the LCD. The encoders and tactile switches can be used to manually adjust the power supplies and record the measurements to study the device characteristics.

Auto-Plot Mode1 – TRIAC Output Characteristics(+ve)

The TRIAC V-I characteristics(+ve) mode plots Vm1m2 (+ve) versus It (+ve) for user set values of Ig. When the AUTO PLOT switch is pressed, the Vmm voltage is varied from 0 to 25V automatically and the measured Vm1m2 and It values are plotted. Before starting this plot, user is required to set the value of zig. A maximum of five plots can be displayed on the screen simultaneously.

Auto-Plot Mode 2 – TRIAC V-I Characteristics(-ve)

The TRIAC V-I characteristics (-ve) mode plots Vm1m2(-ve) versus It(-ve) for user set values of Ig. The value of Ig can be either positive or negative. When the AUTO PLOT switch is pressed, the Vmm voltage is varied from 0 to -25V automatically and the measured Vm1m2 and It values are plotted. Before starting this AUTO PLOT, user has to set the Ig. A maximum of five plots can be displayed on the screen simultaneously.

NOTE: The Auto-Plot modes are incorporated into the system to ensure the users, most of the time students, about the proper operations of the target device and inspires them to take up the device study with confidence and ease. The users have to generate all the plots by themselves. Auto-Plot graphs are only visual reference to them and plot values are not available to the users.