Sensor
How to make Wheatstone bridge based light controller?
Let us make light intensity controller based on ambient light available. Circuit is s…
Transistor
What are Analog and Digital signals & what is the difference?
Analog Signal: We hear lot about digital computer, digital watch Vs analog watch etc. around us. So what are these analog and digital stu…
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Transistor
What is Photo-transistor and Opto-coupler & how they work?
Photo Transistor In this topic we we learn the construction and working of a photo-transistor and an opto-coupler . These are related compone…
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Transistor
What is MOSFET and how it works?
MOSFET MOSFET is acronym of “ Metal Oxide Semiconductor Field Effect Transistor ”. It is a transistor which uses Silicon Dioxide and an ele…
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Transistor
What is Transistor (BJT) and how it works?
Transistor word is combination of two words i.e. Tran sfer and Re sistor , means it is a component which can transfer signal from lower resistan…
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Magnetic Field
How Speaker & Microphone works?
Speaker is a transducer which can convert electrical energy into sound energy. We learned in previous post of DC motor about “ Fleming's …
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