In addition to the transistor voltage drop, the LED will also drop somewhere between 1.2 and 3 volts when it’s switched on (check the datasheet under VF). Therefore, in order to calculate the correct value for resistor Rc, the voltage drop across the collector/emitter (VCE(sat)) and th...
BRT通常用作开关。理想情况下,其导通电压(集电极-发射极电压,VCE)应尽可能接近零。 为达到该条件,应考虑基极电流。 为使VCE最小化,在图1所示的饱和区中使用了BRT。通常,双极晶体管被认为可保证hFE=100。但是,...
The "traffic jam effect," as well as the valve-action of the thin depletion zone between base and emitter, these team up to control the main vertical current through the whole transistor. Any electron which wanders across the very thin Emitter depletion zone can also wander across the thin ...
This is the standard method of using any transistor like a switch for controlling a given load. You can see when a small external voltage is applied to the base, the transistor switches ON and conducts heavier current across the collector emitter terminals, switching on a bigger load. The bas...
When the transistor switches off, the magnetic field produced by the coil collapses, inducing a voltage spike. The flywheel diode provides a path for this spike, protecting the transistor from damage. If you want to learn more about how the transistor works and how to calculate the base resist...
1. Solid grasp of basic electronics Knowing basic electronic principles, circuit board components and their behavior is crucial. You must also understand the basic physics and mathematics concepts to calculate parameters like impedance, signal timing, and power distribution. ...
This electronics video tutorial provides a basic introduction into the common emitter amplifier which uses a NPN bipolar junction transistor. This video explains how to calculate the voltage gain, current gain, and power gain of the CE amplifier circuit. ...
Many scientific and graphing calculators may be capable of some of these functions: Switching from the usual base-ten to other number systems (hexadecimal counting, is a base-16 system) Using scientific notation to calculate very large numbers Using logarithms and trigonometric functions directly ...
Learn how to calculate the resistance reflection rule. Understand the significance of the resistance reflection rule when designing an amplifier with a BJT transistor. The resistance reflection rule helps designers choose the right resistor v...
The device uses the following formula to calculate the power: pinn = 2 ∙ Kp + Ki 1 1 − z− 1 err (2) where err is equal to the voltage error (target output voltage - real output voltage) divided by VerrLSB = 0.473 V (in case standard bulk partitioning resist...