Functions of Resistor Contd. (LED Current Limit)

Just like in transistor biasing as discussed yesterday LEDs(Light Emitting Diodes) too are very sensitive to high currents. A resistor when placed in series with the LEDs regulates a proper flow of current through them. To calculate the value of a series LED resistor, the following formula may be used: R = V –( N.V … Continue reading Functions of Resistor Contd. (LED Current Limit)

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Functions of resistors CONTD. (TRANSISTOR BIASING)

TRANSISTOR BIASING One of the functions of a resistor is in biasing the base of a transistor. A transistor basically needs a small base voltage (>0.6) to make a large voltage flow through its collector/emitter terminals. But the base of a transistor is quite vulnerable to high currents, so a resistor is incorporated here to … Continue reading Functions of resistors CONTD. (TRANSISTOR BIASING)