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Applied Electronic Circuit

• Flash memory Programmer (256 Byte)

We need hex downloader to load hex file in to AT89c51 flash memory. It can be found at Sunrom Technologies web site. It's difficult to us if we don't have this circuit. We can use  256 Byte Flash Memory Manual Programmer to load hex file for step by step. This circuit helps us to learn how every byte of hex file load in to AT89c51 flash memory, although it's capacity is very small.

• Egg incubator's temperature control using fuzzy controller

The temperature of chicken egg incubator must be hold at about 39^oC. If it's temperature fluctuate abruptly, then incubation process will be abnormal (for assumption that humidity level is controlled). The dynamic response of control process is good enough if we use fuzzy controller.

• Iqomat Time Display, Using Count Down Timer

This device make attention to jama'a, how long a waiting time that shola will be hold. There are three choice: 5 minutes, 10 minutes and 15 minutes. When the time is over, buzzer will beep.

• Stepper Motor Driving

Two simple ways to drive stepper motor are, half step and full step signaling. At this page, will be explained how to drive a motor stepper using two explained ways.

• Tone Generating out Loud Speaker

We can generate tone out the loud speaker by make on-off the loud speaker. On or off delay time affect the tone frequency

• Application of Microcontroller AT89C51

- Interfacing AT 89C51 to RS232 and ADC0809

Interfacing AT89C51 to RS232 and ADC0809 are commonly found in many microcontroller circuit application

 

- Inverter DC to AC

By generating ON-OFF pulse at least one pin of AT89C51 port, we can built an inverter that can supply us AC current with DC source.

 

- Pwm Generator

PWM signal can be generated using one pin of AT89C51, by percentage of high and low state.

 

 

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