BA328 for op amp or tone control powered by dual power supplies
The tone control circuit made by the integrated circuit is expensive and troublesome to make; the attenuation tone control circuit is simple to make but has a bad sense of hearing, and also has a large signal attenuation. Here, the cheap and easy-to-buy BA328 is used to make a tone control circuit. The actual audition effect is better. Now I will introduce it to everyone. The circuit principle is as follows:
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BA328 is a high-quality dual op amp powered by a single power supply (see the attached table for performance parameters). The tone control circuit produced by it has the characteristics of few components, good sound quality, and wide range of power supply voltage. As long as the assembly and welding are correct, no commissioning is required.
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If there is no BA328, you can also use LA4160 / LA3161 with the same package and pin function, and the effect is basically the same.
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