bipolar transistor circuits
plz give equations as a result of mathematical analysis of voltage divider bias bipolar junction where?
transistor (BJT). but the collector resistor is replaced by the tank circuit (inductor in parallel with the capacitor), and there is a capacitor in parallel with the emitter resistor. plzzzz …… help me and give the equations for both DC and AC analysis. i also can send U the circuit diagram if anyone is interested to help me then UR ID.THANKS plz send me e-mail!
Decide on a collector. Collector voltage in this case is determined by the supply voltage. Choose a tension emitter, so General 1-4 volts. Higher voltage gives greater stability of prejudice, but loses tension. With Ve = 2 volts, Re is 2/Ic. If Ic is 10 mA, for example, Re = 200Ω. with VBE 0.6 volts typical, base voltage, Ve + Vb is 0.6 volts and 2.6 volts, in this example. There is a voltage divider of two resistors to set This 2.6 volt, ranging from Vbattery grounded. Select a course for the divisor. Ic/10 is usually a good value, in this case would be 1 mA. This works if the transistor HFE is 100 or higher. Now, select the values of the two divider resistors. One top is (Vbattery-Vb) / Ibias, the lower (Vb) / Ibias. In this example, with a 12 volt source, which are (12-2.6) / 1 = 9.4kΩ and 2.6kΩ. I'd use 8.2kΩ and 2.2kΩ. For the emitter bypass cap, choose a value that has a low impedance to frequencies interest. .
Circuit Analysis – Bipolar Junction Transistor Model (BJT) – Dependent Sources – Part 5
