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How to connect Relay with NPN and PNP transistors


Transistor is used to drive relay to connect AC loads. For efficient working, it is important to connect the relay correctly in NPN and PNP transistors. See the way of connection. Continue reading “How to connect Relay with NPN and PNP transistors”

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Articles, Circuit, Components, Design, Electronics, Electronics Theory, Home Circuits, How components work, Techniques, Utility Gadgets

Transistor Amplifier. Simple Design 21


Transistor Amplifier

Sometimes we need higher sound output from Audio based circuits using either Buzzer or Speaker. This simple Transistor based Audio amplifier will give loud sound from the Speaker or Buzzer.
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Circuit, Components, Design, Electronics, Electronics Theory, Hobby Circuits, Home Circuits, How components work, Techniques, Utility Gadgets

Varying brightness LED Lamp.Sensor Circuit 11


This simple White LED lamp can be used in areas where little light is needed. It uses a High bright white LED and its brightness depends on the ambient light in the room. In dark, it give maximum light and in light it switches off. If the light intensity is low, it gives moderate light.
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Familiarize Electronic Components Part II – Transistors


This section describes the features of Transistors, their working and Pin identification methods.

Continue reading “Familiarize Electronic Components Part II – Transistors”