LM3886 100W Power Audio Amplifier circuit
The 100 Watt audio power amplifier circuit utilizes two LM3886 integrated circuits (ICs) arranged in a parallel configuration to achieve higher power output. Each LM3886 is capable of delivering up to 68W of output power into an 8-ohm load, making this configuration suitable for driving larger speakers or for applications requiring significant audio amplification.
The circuit typically includes essential components such as input capacitors, feedback resistors, and output inductors to ensure stability and optimal performance. The input stage may employ a capacitor to block any DC offset from the audio source, while feedback resistors are used to set the gain of the amplifier. Output inductors may be included to filter high-frequency noise and protect the speakers from potential damage.
Power supply considerations are critical for this circuit. A dual power supply providing both positive and negative voltages is often required to ensure proper operation of the LM3886 chips. The recommended supply voltage is typically between 20V to 35V, depending on the desired output power and load impedance.
Thermal management is also an important aspect of the design. The LM3886 has a built-in thermal shutdown feature, but it is advisable to use adequate heatsinking to dissipate heat generated during operation, especially at higher output levels. Proper layout and component placement on the PCB can further enhance thermal performance and reliability.
Overall, this 100 Watt audio amplifier circuit is well-suited for high-fidelity audio applications, providing robust performance and sound quality for various audio systems.The following circuit diagram is the 100 Watt power audio amplifier circuit, build based on power amp chip LM3886. The single chip of IC LM3886 is able to amplify the audio power output up to 68W . In this circuit, the two of LM3886 are para.. 🔗 External reference
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