Part 1: Light Touch Construct the first circuit using a single transistor, an LED, a power source, and a resistance. The brightness of the LED will indicate the relationship between the current ...

It’s laid out on a PCB in order of circuit function, and while we can see that maybe it’s not a practical addresssable LED for 2021, it’s likely that it could be made into a much smaller PCB ...

The group was led by William Shockley ... created an amplifying circuit that seemed to work, using the element germanium They called it the point-contact transistor. Its discovery was announced ...