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Over-current protection circuit design for 25 ohm speakers

What brings you is an overload protection circuit design for a 25-ohm speaker. The overload protection circuit has a power of 650mW, a power supply voltage of 12V, and a speaker of 25 ohms. Specific circuit design and component specifications can be explained in detail below. As shown in the figure, the power of the overload protection circuit is 650mW, the power supply voltage is 12V, and the speaker is 25 ohms. Some component specifications: VT1: Transistor NB111EH/JVT2: Transistor: NR001EVT3: Transistor NA11EB/JVT4: Transistor NA12EB/J.

Speaker overload protection circuit design
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