ELECTRONIC_CW“BUG”KEYER

Published:2009/6/17 2:40:00 Author:May | From:SeekIC

This keyer uses skin conductivity to simulate the old-fashioned mechanical CW bug keyer. When the “dit”paddle is touched the bias on the inverter, IC1-a is shunted to ground, and it produces a logic high, causing oscillator sections C&D to generate a low-frequency square wave keying Ql for a series of “dits.” When the “dah”paddle is touched, section b produces a logic high, driving keyer Q1 on.



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