This circuit use test waves light receiver signal pulse change LED1. For R1 and C1 be formed control the rate pulse of the circuit. Besides equipment all value in the circuit will give the rate pulse about 600Hz.

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Tags: led displays, NE555, Tone Generator

This entry was posted on Monday, December 15th, 2008 at 1:09 pm and is filed under Audio, led display. You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site.