SOUND - Extensions
1. Building the Meter
In this unit, the Ready-Made extensions involve measurements of sound intensity.
For these investigations you will need to build a Sound Level Meter.
Sound Level Meter
The sound Level Meter is based on the 741 Amplifier constructed in the
Messing Around Section. Therefore, you already have most of the parts, and you have
already finished 85% of the work. A few extra parts are neccessary.
Sound Level Meter Circuit
A circuit diagram for a Sound Level Meter is shown above.
Construct your Sound Level Meter on a breadboard.
If you need more detail, you can look at a breadboard
The heart of the Sound Level Meter is the 741 Amplfier already built.
A few additional parts are need to prepare the amplfied signal so it can
be read by a voltmeter.
Test your Sound Level Meter.
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