astable mode
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8051 Microcontroller based Frequency Counter Frequency is defined as number of cycles per second. It can also be defined as reciprocal of total time ‘T’. In this project we are going to count the number of pulses entering into Port 3.5 of 8051 microcontroller and display it on 16*2 LCD display. So basically we have measuring the frequency of signal at Port 3.5 of 8051. Here we have used AT89S52 8051 chip, and a… |
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Brake Failure Indicator Circuit Automobiles have been the primary mode of transportation for most of us and we depend on them for our day to day commute. Unfortunately there are lots of mishaps that could occur while driving an automobile and Brake Failures are one such case. Of course accidents cannot be avoided sometimes but they can sure be prevented by taking some preventive measures. In this… |
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555 Timer Astable Multivibrator Circuit Astable Multivibrator mode of 555 timer IC is also called Free running or self-triggering mode. Unlike Monostable Multivibrator mode it doesn’t have any stable state, it has two quasi stable state (HIGH and LOW). No external triggering is required in Astable mode, it automatically interchange its two states on a particular interval, hence generates a rectangular waveform.… |
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Electronic Mosquito Repellent Circuit Various mosquito repellent solutions like coils, liquid vaporizers, and creams, all have possible adverse effects to health. Then there are electronic mosquito repellents available in market which are equally efficient and relatively safer. The concepts of these mosquito repellers are simple and we can build a simple mosquito repellent circuit at home easily by using 555… |
