Snap Circuits Science: Resistors In Series

Thursday, September 18, 2014 - 08:41 in Physics & Chemistry

A tone generator is a useful piece of test equipment used, for example, to test the frequency range of audio equipment such as your stereo or the external speakers for your iPod. A tone generator can also be used to tune a musical instrument such as a guitar. You can make a simple tone generator using a 555 Timer IC, a capacitor, potentiometer, speaker, and a power source (circuit pictured above). Here’s the schematic: read more

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