Hello,
I've built a simply transistor circuit in which a small current flows through two terminals when they are both placed in water, opening the bridge between the collector and emitter on an NPN transistor to light an LED.
I noticed a weird anomaly, however. If I touch the point marked "Problem Here" in the image, without anything being in the water, and the two terminals separate, the LED still lights up.
How is this possible? Why is the transistor opening the bridge between the collector and emitter in this situation when there is no current supply!? I'm very interested in knowing how this is happening .
Thanks,
Vaughan
I've built a simply transistor circuit in which a small current flows through two terminals when they are both placed in water, opening the bridge between the collector and emitter on an NPN transistor to light an LED.
I noticed a weird anomaly, however. If I touch the point marked "Problem Here" in the image, without anything being in the water, and the two terminals separate, the LED still lights up.
How is this possible? Why is the transistor opening the bridge between the collector and emitter in this situation when there is no current supply!? I'm very interested in knowing how this is happening .
Thanks,
Vaughan
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