By Ron Newton View In Digital Edition
This project started out with a singular focus and grew into a multi-purpose circuit with all kinds of sensors for detection and alarm applications.
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Correct:
Transistors Q1-5 2N5401 PNP
Transistors Q6-9 2N5551 NPN
Incorrect:
Transistors Q1-5 2N5551 NPN
Transistors Q6-9 2N5401 PNP
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