NPN Transistor
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Simple Sine Wave Generator Circuit using Transistor Previously we have built simple Square Wave Generator circuit, today in this tutorial, we are going to show you how to generate Sine wave using few basic components like transistor, resistor and capacitor. Sine wave is most commonly known as waveform for Alternating Current. In this circuit we will also build that alternating waveform, we can adjust the frequency or reduce… |
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Temperature Controlled DC Fan using Thermistor “Automation is good, so long as you know exactly where to put the machine’’, In this tutorial we are making a Temperature controlled DC fan using Thermistor, as it starts above the preset level of temperature and stops when the temperature return to normal condition. This whole process is done automatically. We have previously made the Temperature controlled Fan using… |
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NPN Transistors The first bipolar junction transistor was invented in 1947 at Bell laboratories. “Two polarities” is abbreviated as bipolar, hence the name Bipolar junction transistor. BJT is a three terminal device with Collector (C), Base (B) and Emitter (E). Identifying the terminals of a transistor requires the pin diagram of a particular BJT part, it will be available in the datasheet… |
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Transistor Switching Circuit: Examples of How Transistor Acts as a Switch Transistors are made up of semiconductor material which is most commonly used for amplification or switching purpose, although they can also be used for controlling the flow of voltage and current. Not all but most of the electronic devices contain one or more types of transistors. Some of the transistors placed individually or else generally in integrated circuits… |
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Fire Alarm Circuit using Thermistor Fire alarms are a prime necessity in modern buildings and architecture, especially in banks, data centres, and gas stations. They detect fire in the ambience at a very early stage by sensing smoke or heat and raise an alarm, which warns people and gives them sufficient time to take preventive measures. It not only prevents big losses caused by deadly fire but sometimes… |
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Simple Water Level Indicator Alarm with Buzzer Water tank overflow is a common problem which leads to the wastage of water. Though there are many solutions, like ball valves which automatically stop water flow once the tank gets full, electronics enthusiasts prefer smart electronic solutions. This comprehensive water level indicator project tutorial will guide you to build a simple DIY water level indicator circuit that… |
