Transistor as a switch, how to calculate base resistor's resistance? | Bipolar Junction Transistor.
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Tutorial: How to design a transistor circuit that controls low-power devices
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O Indutor! O que é, como funciona, onde de aplica!
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Transistors - NPN & PNP - Basic Introduction
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How To Use Transistors In YOUR Projects! || Transistors Explained || Transistors As A Switch
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JFET as a Voltage Controlled Resistor --- Voltage Controlled Variable Gain Amplifier
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How a 555 Works as a Timer.
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What is Saturation
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