This circuit is a Logic Probe. It indicates the logic state of the node of any TTL logic circuit. To do that, we have to supply the probe with the same power of the circuit that we want to analyse: same Vcc and same GND. To check the logic level, we must connect the “Test” wire of the probe to the desired node of the circuit that we want to check.
Source: http://www.electronics-lab.com/projects/test/020/index.html
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This entry was posted on Thursday, June 19th, 2008 at 6:52 pm and is filed under circuit com, Digital.
