The following is the circuit diagram of [LM4910 Stereo Headphone Amplifier Circuit] The LM4910 is an audio power amplifier designed primarily for portable devices. It operates from a 3.3V supply and is capable of outputting 35mW of continuous average power to drive a 32Ω load.
The LM4910 eliminates the headphone amplifier's output-coupling capacitor and half-supply bypass capacitor with a new topology circuit. It includes an advanced “click-and-push†sound-canceling circuit that is generated at the moment the switch is turned on and off. The pinout of the LM4910 is shown in the figure.
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KNB1-32 Mini Circuit breakers, also named as the air switch which have a short for arc extinguishing device. It is a switch role, and also is a automatic protection of low-voltage electrical distribution. Its role is equivalent to the combination of switch. Fuse. Thermal Relay and other electrical components. It mainly used for short circuit and overload protection. Generally, According to the poles, mini Circuit breaker can be divided into 1P , 1P+N , 2P, 3P and 4P.
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