Electroenthusiast
Active Member
Many years ago at school, the professor who dealt with explaining how a semiconductor doping works said me a thing. It was that no one knows how things work, the ones which are being explained are just theoretical, and the practicality is not better known.
Today, i was using a LED table lamp powered by a USB cable. I thought of running the cable to the other side of the cable, but the cable with which it came was not long enough. I used a cheap USB extension cable for that length and it seems to be working little creepily.
The LED lamp works for few seconds and then switches it self off after couple of seconds, this happens everytime i switch the lamp. But, it works perfectly fine when the extension cable is removed, and when only connected to the PS with the cable it came with. Whats wrong with the USB extension cable? Why is it working like this when it is just conductive wire inside?
Today, i was using a LED table lamp powered by a USB cable. I thought of running the cable to the other side of the cable, but the cable with which it came was not long enough. I used a cheap USB extension cable for that length and it seems to be working little creepily.
The LED lamp works for few seconds and then switches it self off after couple of seconds, this happens everytime i switch the lamp. But, it works perfectly fine when the extension cable is removed, and when only connected to the PS with the cable it came with. Whats wrong with the USB extension cable? Why is it working like this when it is just conductive wire inside?