Emitted by the two co-polar amplifier broadband amplifier practical

The circuit consists of a two-stage common emitter amplifier, which serves as a practical wideband amplifier. It utilizes capacitors for coupling between the input and output stages. The emitter decoupling capacitor, C4, is employed to eliminate AC negative feedback, thereby enhancing the amplification of communication signals. The circuit is powered by a -15V power supply connected to an inductor (10 µH), along with components such as C3, R11, and C2, which function as filters to reduce power supply ripple.

The two-stage common emitter amplifier is designed to provide significant amplification over a broad frequency range, making it suitable for applications in communication systems. The use of capacitors for coupling allows for efficient signal transfer between stages while blocking DC components, ensuring that only the AC signal is amplified.

The emitter decoupling capacitor, C4, plays a crucial role in stabilizing the amplifier's performance by bypassing AC signals to ground, which minimizes the impact of negative feedback that could otherwise reduce gain. This feature is particularly important in high-frequency applications where maintaining signal integrity is essential.

The -15V power supply is critical for the operation of the amplifier, providing the necessary biasing for the transistors used in the common emitter configuration. The inductor (10 µH) is strategically placed in the circuit to improve the stability of the power supply by reducing high-frequency noise and ripple.

Additional components, such as C3 and R11, serve as low-pass filters, effectively attenuating any unwanted high-frequency noise present in the power supply. C2 may also act as a bypass capacitor, further smoothing out the power supply voltage and ensuring stable operation of the amplifier.

Overall, this two-stage common emitter amplifier circuit is well-suited for applications requiring high gain and wide bandwidth, and its design incorporates essential elements for signal integrity and power supply stability.Emitted by the two co-polar amplifier broadband amplifier practical It is shown by the two-stage common emitter amplifier very practical wideband amplifier. Between the input a nd output capacitors are used, and is coupled way, C4, cs is the emitter decoupling capacitor to eliminate AC negative feedback, enhance communication signal amplification ability, -15V power supply connected to the inductor (10 yH) and It6, C3, Rii, island, C2, etc. are filters used to filter the power supply ripple.