SIMPLE_LOGIC_PROBE

Published:2009/6/25 4:17:00 Author:May | From:SeekIC

If the probe is connected to logic 0, Q1 will be turned on lighting D1. At logic 1, Q2 will be turned on lighting D2. For Q1 and Q2 any NPN or PNP transistors will do.Similarly, D1 and D2 can be any LEDs.



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