Md. Saiful Islam Shohel

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what is Rand() function in matlab simulation software?

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Type: >> help rand On the window you will get the message:- RAND Uniformly distributed pseudorandom numbers. R = RAND(N) returns an N-by-N matrix containing pseudorandom values drawn from the standard uniform distribution on the open interval(0,1). RAND(M,N) or RAND([M,N]) returns an M-by-N matrix. RAND(M,N,P,…) or RAND([M,N,P,…]) returns an M-by-N-by-P-by-… array. …

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Why we are using active electrode in electroencephalography (EEG)

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Why we are using active electrode in electroencephalography (EEG) for collecting brain signal? Nowadays too many biomedical engineers are trying to collecting data signal from the scalp but some don’t know which electrode will be better for them. Today I am explain, what is the basic advantage and why we …

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characteristics of an ideal op-amp (operational amplifier)

IDEAL op-amp

There are are many characters op-amp in the market right now. Every company designing their won design for work in new applications. Before a engineer make a design of an op-amp he need to know the IDEAL op-amp characteristics. characteristics of an ideal op-amp (operational amplifier): • Infinite Differential Gain • Zero Common Mode …

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Sunrise-Sunset Detector with Serial Monitor using Arduino microcontroller

Serial Monitor displaying “Sunset” and “Sunrise” messages

Sunrise-Sunset Detector with Serial Monitor using Arduino microcontroller Please see the basic design of Sunrise-Sunset Detector using Arduino microcontroller This Ultimate Microcontroller project demonstrates the power of electronic sensors to detect physical stimuli such as light, sound, and pressure. With a slight modification to the sketch, messages can scroll across a Serial Monitor. The …

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Sunrise-Sunset Light Switch using Arduino microcontroller

RC timing circuit with a photocell (variable resistor)

Sunrise-Sunset Light Switch using Arduino microcontroller Resistor-Capacitor Timing Basics Designing and building new electronic devices is quite easy when you know the secret ingredient to rapid design. The technique is to take an existing electronic device and make a small change to it. For example, the Trick Switch project can easily be …

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Trick Switch with On/Off Indicators using Arduino microcontroller

Trick Switch block diagram

Trick Switch with On/Off Indicators using Arduino microcontroller Please see the basic design of Trick Switch using Arduino microcontroller In developing new products, electronics designers are always improving designs by adding features and functions that excite the customer. The Trick Switch device you built can be improved by adding an LED indicator. This …

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Made The Trick Switch using Arduino microcontroller

Figure 1-1. Trick Switch circuit built on a full-size clear breadboard (both the 100 uF electrolytic capacitor and red LED negative pins are wired to ground)

Made The Trick Switch using Arduino microcontroller Resistor-Capacitor Timing Basics In electronics, sometimes we want to keep a device on for a certain amount of time even when an electrical switch is turned off. Ordinary pushbuttons used to turn electronic devices on and off can easily be operated by a timed delay …

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Mathematical methods in electronics – BASIC ELECTRONICS TUTORIAL

Mathematical methods in electronics – BASIC ELECTRONICS TUTORIAL

Mathematical methods in electronics – BASIC ELECTRONICS TUTORIAL Mathematical methods in electronics Mathematical methods are integral to the study of electronics. To become proficient in electronics it is also necessary to become proficient in mathematics. Mathematics in Electronic Engineering careers Electronic Engineering (EE) careers usually include courses in Calculus (single and multivariable), …

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