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VOLUME_UNIT_DISPLAY_AND_ALARM_1

2016-12-04 10:51  
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VOLUME_UNIT_DISPLAY_AND_ALARM_1
The concept is achieved by using two input modules, namely the sound input circuit and the signal mixer circuit, and selecting between them by means of a switch. The signal is then processed by an integrated circuit (IC3) and associated components, which convert a rising and falling voltage into a rising and falling LED display. The buzzer output module is connected so that when the appropriate LED lights, the buzzer sounds, indicating the excess level warning.