CE Circuit with Unbypassed Emitter Resistor: h-parameter Equivalent Circuit - When an CE Circuit with Unbypassed Emitter Resistor (RE) as shown in Fig. 6-25(a), it is also present in the…
Common Emitter Amplifier Circuit: Consider the Common Emitter Amplifier Circuit circuit shown in Fig. 6-17. When the capacitors are regarded as ac short-circuits, it is seen that the circuit input…
Transistor Models and Parameters: T-Equivalent Circuit - Because a transistor consists of two pn-junctions with a common centre block, it should be possible to use two pn-junction ac equivalent circuits…
Coupling and Bypassing Capacitors: Coupling Capacitors - To use a transistor circuit to amplify or otherwise process an ac signal, the signal source must be connected to the circuit input.…
Bias Circuit Design: Bias Circuit Design can be amazingly simple. Usually, it is just a matter of determining the required voltage across each resistor and the appropriate current levels. Then,…
BJT Bias Circuit Troubleshooting: Voltage Measurement - When a BJT Bias Circuit Troubleshooting is constructed in a laboratory situation, the supply voltage (VCC) and the voltage levels at the transistor…
Transistor Testing Circuit: In-Circuit Testing - A quick test to check if a transistor is operational can be performed while the device is still connected in a circuit. Consider Fig.…
CE Transistor Characteristics: Common Emitter Circuit - Figure 4-26 shows a circuit for determining CE Transistor Characteristics. The input voltage is applied between the B and E terminals, and the…