News post : Electronic Projects Circuits :Eleccircuit.com |  |
| Three state logic tester probe using IC-CD4001 Posted: 14 Aug 2013 09:10 AM PDT The work of the Temple three state logic IC-CD4001 circuit be the circuit will use not gate IC in show supervision. In case of still have no input signal come in be liberate input pin of IC1/1 float keep. Which make have impedance very many, which have no LED anything shine come out. In first [...]  |
| Voice logic probe by transistor BC557 Posted: 14 Aug 2013 08:53 AM PDT The key is that the logic probe circuit, using a light emitting diode, or LED display is a state (high or low) point of the analysis, but on the other hand, it can display the state has the same voice. The circuit is shown, it is the audio source, click the tiny speaker with a [...]  |
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