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Title: Speed control of stepper motor using AT89c51
Page Link: Speed control of stepper motor using AT89c51 -
Posted By: Tony Akpaka
Created at: Tuesday 08th of June 2010 04:31:33 AM
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Please can anyone assist me with the write up of speed control of stepper motor using AT89c51 ....etc

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Title: MICROCONTROLLER AT89C51 BASEDAUTO SPEED LIMITER WITH A UTO BREAKING
Page Link: MICROCONTROLLER AT89C51 BASEDAUTO SPEED LIMITER WITH A UTO BREAKING -
Posted By: [email protected]
Created at: Monday 01st of February 2010 08:35:34 PM
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I AM SEARCHING FOR CIRCUIT DIAGRAM OF MICROCONTROLLER AT89C51 BASED AUTO SPEED LIMITER WITH AUTO BREAKING ....etc

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Title: PHASE-ANGLE CONTROL OF SCR USING AT89C51
Page Link: PHASE-ANGLE CONTROL OF SCR USING AT89C51 -
Posted By: seminar class
Created at: Tuesday 22nd of March 2011 01:35:11 PM
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PHASE-ANGLE CONTROL OF SCR USING AT89C51
Silicon-controlled rectifiers (SCR) are solidstate semiconductor devices that are usually used in power switching circuits. SCR controls the output signal by switching it ‘on’ or ‘off’, thereby controlling the power to the load in context. The two primary modes of SCR control are phase-angle fired-where a partial waveform is passed to regulate the power.
In the phase-angle controller, the firing pulse is delayed to turn on the SCR in middle of every half cycle. This ....etc

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Title: Wireless equipment control using AT89C51
Page Link: Wireless equipment control using AT89C51 -
Posted By: smart paper boy
Created at: Wednesday 22nd of June 2011 01:26:36 PM
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ABSTRACT
Here is a microcontroller based wireless equipment controller that can switch on or off upto four devices at a desired time interval set by the user in the transmitter. The devices can be controlled remotely from a distance upto 30 metres from the transmitter. In the transmitter, an LCD module is used to show the device numbers and preset control time for the devices (00 to 99 seconds). The 8-bit AT89C51 microcontroller is the main controlling part of the transmitter section. It is connected to the LCD modu ....etc

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Title: AT89C51 Development Kit
Page Link: AT89C51 Development Kit -
Posted By: seminar class
Created at: Friday 22nd of April 2011 06:37:41 PM
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Aim -To make a tutorial on AT89C51 development kit
Technical details –
Features

• Compatible with MCS-51™ Products
• 4K Bytes of In-System Reprogrammable Flash Memory
– Endurance: 1,000 Write/Erase Cycles
• Fully Static Operation: 0 Hz to 24 MHz
• Three-Level Program Memory Lock
• 128 x 8-Bit Internal RAM
• 32 Programmable I/O Lines
• Two 16-Bit Timer/Counters
• Six Interrupt Sources
• Programmable Serial Channel
• Low Power Idle and Power Down Modes
Description
The AT89 ....etc

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Title: LCD INTERFACING USING AT89C51
Page Link: LCD INTERFACING USING AT89C51 -
Posted By: seminar class
Created at: Monday 09th of May 2011 11:53:35 AM
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Submitted By
ACHARYA MIRAJ SHAILESHBHAI


INTRODUCTION
The declining prices of the LCDs. The ability to display number, characters and graphics. This is in contrast with LEDs, which are limited to numbers and few characters. Incorporation of a refreshing controller in to LCD, thereby relieving the CPU to keep displaying the data. Ease of programming for the characters and graphics.
Block Diagram
Block Description:
In this project there are three main blocks
1. Power supply section
2. Controll ....etc

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Title: MICROCONTROLLER AT89C51 BASED AUTO SPEED LIMITER WITH AUTO BREAKING
Page Link: MICROCONTROLLER AT89C51 BASED AUTO SPEED LIMITER WITH AUTO BREAKING -
Posted By: [email protected]
Created at: Monday 01st of February 2010 08:30:25 PM
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MICROCONTROLLER AT89C51 BASED AUTO SPEED LIMITER WITH AUTO BREAKING ....etc

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Title: Temperature monitoring system using AT89C51
Page Link: Temperature monitoring system using AT89C51 -
Posted By: seminar class
Created at: Tuesday 12th of April 2011 05:55:43 PM
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1. INTRODUCTION
1.1 Context

This project explains about a simple low cost circuit which can be mainly used in large scale industries to detect the high temperature and take immediate measures. This circuit is used to sense the temperature at a place. It indicates the temperature on the 7 Segment Display with the help of microcontroller. This circuit makes use of SL100 which is a 3 pin centigrade temperature sensor IC. It directly senses the temperature and sends the data to the controller.
The complete project is ....etc

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Title: 8 CANDIDATE QUIZ BUZZER USING 8051 MICRO CONTROLLER AT89C51
Page Link: 8 CANDIDATE QUIZ BUZZER USING 8051 MICRO CONTROLLER AT89C51 -
Posted By: seminar class
Created at: Friday 04th of March 2011 03:40:02 PM
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POWER SUPPLY
The input to the circuit is applied from the regulated power supply. The a.c. input i.e., 230V from the mains supply is step down by the transformer to 5V and is fed to a rectifier. The output obtained from the rectifier is a pulsating d.c voltage. So in order to get a pure d.c voltage, the output voltage from the rectifier is fed to a filter to remove any a.c components present even after rectification. Now, this voltage is given to a voltage regulator to obtain a pure constant dc voltage
Transformer ....etc

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Title: DIGITAL AUDIO PROCESSOR USING AT89C51
Page Link: DIGITAL AUDIO PROCESSOR USING AT89C51 -
Posted By: seminar class
Created at: Thursday 03rd of March 2011 02:18:44 PM
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DIGITAL AUDIO PROCESSOR USING AT89C51
1. BACKGROUND

This report presents an infrared (IR) remote-controlled digital audio processor.
It is based on a microcontroller and can be used with any NEC-compatible full function
IR remote-control. This audio processor has enhanced features and can be easily customized to meet individual requirements as it is programmable.
Its main features are:
1. Full remote control using any NEC-compatible IR remote control handset.
2. Provision for four stereo input chann ....etc

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