Telephone ring tone circuit
Source: InternetPublisher:闪电杰克 Keywords: Telephone audio circuit ring tone circuit piezoelectric converter Updated: 2020/06/11
![Telephone ring tone circuit](http://www.eeworld.com.cn/circuit/upload/f073490e03cf734bc9b10e5aa35c5e34/b7661a9bbb0a11fcb7012ab76ca001c8.gif)
This is a complete telephone ring replacement circuit with minimal external components and an on-chip diode bridge, along with transient protection and direct drive for piezoelectric transducers.
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