Sound-Type Logic Pen Circuit Diagram

Published:2011/6/16 10:57:00 Author:Vicky | Keyword: Sound-Type Logic Pen | From:SeekIC

The result of sound-type logic pen is observed by naked eyes. Due to the high development of modern electronics producing technology, soldered dots are densely assigned in the circuit board. Therefore when testing, one should concentrate on it and his eyes should always focus on the tested dot. Hence if a sound-type tester is made, our ears can be also used in testing and it will highly improve the efficiency. The above picture ia the sound-type logic pen composed of NAND gate CD4011.



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