10 Watt Audio Amplifier
The described audio amplifier circuit is designed for general-purpose applications, specifically targeting moderate-power public address (PA) systems and modulation in amplitude modulation (AM) transmitters. The amplifier operates at a nominal power output of 10 watts, making it suitable for various audio amplification tasks where moderate power levels are sufficient.
The circuit can be modified to achieve a higher output power of up to 30 watts by adjusting the supply voltage and altering the biasing resistors. This flexibility allows the amplifier to cater to different power requirements based on the specific application needs.
The design typically incorporates a Class AB output stage, which strikes a balance between linearity and efficiency, making it ideal for audio applications. Key components of the circuit may include transistors for amplification, resistors for biasing and load, capacitors for coupling and decoupling, and possibly inductors for filtering to maintain signal integrity.
Power supply considerations are crucial, as the circuit may require a dual power supply to accommodate the positive and negative swings of the audio signal. Adequate heat sinking may also be necessary to dissipate heat generated during operation, especially when operating at higher power levels.
In terms of input and output, the circuit is designed to accept standard audio signals, which can be fed from various sources, and output the amplified audio signal to speakers or further processing stages. Proper impedance matching may be necessary to ensure maximum power transfer and minimize distortion.
Overall, this audio amplifier circuit serves as a versatile solution for audio amplification needs in various applications, with the potential for power scalability through careful component selection and circuit modifications.This circuit is a general-purpose 10-W audio amplifier for moderate-power PA or modulator use in an AM transmitter. With higher voltages and a change in bias resistors, up to 30 W can be obtained. With higher voltages and a change in bias resistors, up to 30 W can be obtained. 🔗 External reference
Related Circuits
The circuit is a microphone amplifier designed for low impedance microphones, approximately 200 ohms. It operates with stabilized voltages ranging from 6 to 30 VDC. If the impedance adapter section with T1 is not constructed, the circuit can be...
The amplifier circuit utilizes the STK integrated circuit, similar to a previous design. This circuit features two inputs and two outputs, commonly known as a stereo amplifier. It is a power amplifier rated at 2 x 18 Watts with...
This circuit is useful for removing ground loop hum on a remote line level audio signal line. It can be used to connect a computer sound card to a stereo amplifier's line input. Other uses include tapping into a...
The LA7051 is a video and audio signal processor integrated circuit (IC) designed for UHF band RF modulation. It performs functions such as audio frequency modulation, video clamping, and white clipping. The LA7051 IC is engineered to facilitate the modulation...
This wideband antenna preamplifier has a gain of approximately 20 dB from 40 to 860 MHz, covering the entire VHF, FM, commercial, and UHF bands. A phantom power supply delivers DC power to the preamplifier through the coaxial cable...
A popular project among microcontroller enthusiasts is to construct a radio-controlled clock. Compact receiver boards are available, equipped with a pre-tuned ferrite antenna, which can receive and demodulate the DCF77 time signal broadcast from Mainflingen, Germany. The DCF77 signal...