Circuit - 40KHZ LED TEST SIGNAL GENERATOR - Circuits designed by David A. Johnson, P.E.

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Circuits designed by David Johnson, P.E.
Last Updated on: Thursday, December 01, 2011 06:33 AM

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Infrared Circuits

40KHZ LED TEST SIGNAL GENERATOR

This 40KHz crystal controlled oscillator circuit drives an infrared LED with powerful 40ma pulses. The circuit can be used to test optical communications circuits, designed to receive 40KHz modulated light signals.

Click on Drawing Below to view PDF version of Schematic

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